East Niles Community Services District 2010 Urban Water Management Plan

Transcription

1 East Niles Community Services District June 2011 East Niles Community Services District Timothy P. Ruiz, PE - General Manager AECOM Joshua T. Nord, PE - District Engineer 5001 E. Commercenter Dr., Suite 100, Bakersfield, CA 93309

2 Table of Contents Section 1 : Plan Preparation Coordination Plan Adoption, Submittal, and Implementation Section 2 : System Description Service Area Physical Description Service Area Population Section 3 : System Demands Baselines and Targets Water Demands Water Demand Projections Water Use Reduction Plan Section 4 : System Supplies Water Sources Groundwater Transfer Opportunities Desalinated Water Opportunities Recycled Water Opportunities Future Water Projects Section 5 : Water Supply Reliability and Water Shortage Contingency Planning Water Supply Reliability Water Shortage Contingency Planning Water Quality Drought Planning Section 6 : Demand Management Measures DMM A Water Survey Programs for Single-Family and Multi-Family Residential Customers DMM B Residential Plumbing Retrofit DMM C -- System Water Audits, Leak Detection, and Repair DMM D -- Metering with Commodity Rates for All New Connections and Retrofit of Existing Connections DMM E Large Landscape Conservation Programs and Incentives DMM F High-Efficiency Washing Machine Rebate Program DMM G -- Public Information Programs East Niles Community Services District i

3 6.08 DMM H -- School Education Programs DMM I Conservation Programs for Commercial, Industrial, and Institutional Accounts DMM J Wholesale Agency Programs DMM K Conservation Pricing DMM L Water Conservation Coordinator DMM M Water Waste Prohibition DMM N Residential Ultra-low-flush Toilet Replacement Program Appendices A B C East Niles Community Services District ii

4 List of Acronyms and Abbreviations AB Assembly Bill Act Urban Water Management Planning Act Baseline Base daily per capita water use BMP(s) Best management practice(s) CBDA California Bay-Delta Authority1 CEQA California Environmental Quality Act CII Commercial, industrial, and institutional City City of Bakersfield COB City of Bakersfield County County of Kern CUWCC California Urban Water Conservation Council CWC California Water Code CWS California Water Service Company CWSRF Clean Water State Revolving Fund Department California Department of Water Resources DIRWM Division of Integrated Regional Water Management District East Niles Community Services District DMM(s) Demand management measure(s) DOST DWR online submittal tool DWR California Department of Water Resources ENCSD East Niles Community Services District GHG Greenhouse gas GPCD Gallons per capita per day IRWM Integrated Regional Water Management IRWMP(s) Integrated Regional Water Management Plan(s) KCWA Kern County Water Agency KDWD Kern Delta Water District Method 4 Urban Water Use Target Method 4 MOU Memorandum of Understanding NORMWD North of the River Municipal Water District OMWC Oildale Mutual Water Company Plan (or UWMP) Urban Water Management Plan SB Senate Bill State Water Board State Water Resources Control Board USC Urban Stakeholders Committee USBR-MP United States Bureau of Reclamation Mid-Pacific Region UWMP (or Plan) Urban Water Management Plan VWS Verification of Water Supply WSA Water Supply Assessment East Niles Community Services District iii

5 Section 1: Plan Preparation The California Urban Water Planning Act (Act) requires urban water suppliers that have 3,000 or more service connections or supply 3,000 or more acre-feet (AF) of water per year to develop an Urban Water Management Plan (UWMP or Plan), which is submitted to the California Department of Water Resources (DWR) every five years. The Plan is required to describe and evaluate water deliveries and uses, sources of supply, reasonable and practical efficient water uses, demand management activities and water shortage contingency planning. Since 2005, legislation has been implemented that interrelates with the Act. SBX7-7 (Water Conservation Bill of 2009) requires urban water suppliers to develop baseline daily per capita water use and urban water use targets with the goal of reducing per capita water use by 20 percent by Also, urban water suppliers must include projected water demands for lower income households in their future water use projections. In accordance with Water Code , implementation of the demand management measures defined in is required in order for an urban water supplier to be eligible for a water management grant or loan made by the Department, State Board, or California Bay-Delta Authority (or its successor agency). ENCSD has prepared its 2010 UWMP in accordance with the DWR Guidebook to Assist Urban Water Suppliers to Prepare a (Guidebook). The format of the Plan follows the suggested organization in Part 1, Section 1 of the Guidebook and incorporates all suggested tables as numbered and shown in the Guidebook to facilitate review of the Plan by DWR. Some of the tables are not applicable to the District s Plan and are noted as such. In addition, the placement of the tables in this Plan is in accordance with the suggested format in the Guidebook and therefore there are sections in this Plan where the tables are not presented in numeric order Coordination Law Each urban water supplier shall coordinate the preparation of its plan with other appropriate agencies in the area, including other water suppliers that share a common source, water management agencies, and relevant public agencies, to the extent practicable (10620(d)(2)). Every urban water supplier required to prepare a plan pursuant to this part shall, at least 60 days prior to the public hearing on the plan required by Section 10642, notify any city or county within which the supplier provides water supplies that the urban water supplier will be reviewing the plan and considering amendments or changes to the plan. The urban water supplier may consult with, and obtain comments from, any city or county that receives notice pursuant to this subdivision (10621(b)). The urban water supplier shall provide that portion of its urban water management plan prepared pursuant to this article to any city or county within which it provides water supplies no later than 60 days after the submission of its urban water management plan (10635(b)). Each urban water supplier shall encourage the active involvement of diverse social, cultural, and economic elements of the population within the service area prior to and during the preparation of the plan (10642). East Niles Community Services District 1-1

6 Prior to adopting a plan, the urban water supplier shall make the plan available for public inspection and shall hold a public hearing thereon. Prior to the hearing, notice of the time and place of hearing shall be published within the jurisdiction of the publicly owned water supplier pursuant to Section 6066 of the Government Code. The urban water supplier shall provide notice of the time and place of hearing to any city or county within which the supplier provides water supplies. A privately owned water supplier shall provide an equivalent notice within its service area (10642). ENCSD is located on the east side of metropolitan Bakersfield in the County of Kern. The District encompasses portions of both City and unincorporated County land and depends on some of the same water sources as the Agencies listed below in Table 1. ENCSD has actively encouraged community participation in its urban water management planning efforts since the first plan was developed in Table 1 summarizes the efforts ENCSD has taken to involve appropriate agencies and the general public in the District s planning process. Copies of notices are included in Appendix A. For the 2010 Plan update, the public hearing was held on June 20, Accordingly, notice was provided as follows: Letter to City and County on April 21, 2011 (60 days prior to hearing), Letter to Interested Parties (see Table 1) on April 21, 2011, Notice in local newspaper on June 3rd and June 9th, 2011 (per Gov. Code weeks in advance of hearing), Posted Draft 2010 UWMP at District Office on June 6, 2011 (2 weeks prior to hearing), and Drafts of the plan were submitted to the entities that requested such drafts (see Table 1). The Plan will be submitted to the City of Bakersfield and the County of Kern no later than 60 days after submission of the Plan to DWR. Table 1. Coordination with Appropriate Agencies Participated in developing the plan Commented on the draft Attended public meetings Was contacted for assistance Was sent a copy of the draft plan Coordinating Agencies Kern County Water Agency North of the River Municipal Water District Oildale Mutual Water Company California Water Service Company City of Bakersfield County of Kern Kern Delta Water District Arvin-Edison Water Storage District General Public Was sent a notice of intention to adopt Not involved / No information East Niles Community Services District 1-2

7 1.02 Plan Adoption, Submittal, and Implementation Law The amendments to, or changes in, the plan shall be adopted and filed in the manner set forth in Article 3 (commencing with Section 10640) (10621(c)). After the hearing, the plan shall be adopted as prepared or as modified after the hearing (10642). An urban water supplier shall implement its plan adopted pursuant to this chapter in accordance with the schedule set forth in its plan (10643). An urban water supplier shall submit to the department, the California State Library, and any city or county within which the supplier provides water supplies a copy of its plan no later than 30 days after adoption. Copies of amendments or changes to the plans shall be submitted to the department, the California State Library, and any city or county within which the supplier provides water supplies within 30 days after adoption (10644(a)). Not later than 30 days after filing a copy of its plan with the department, the urban water supplier and the department shall make the plan available for public review during normal business hours. (10645). ENCSD prepared this update of its Urban Water Management Plan during the fall of 2010 and spring of The updated plan was adopted by the District at the Public Hearing / Regular Meeting of the Board of Directors on June 20, The intent of the Public Hearing was to gather input from the diverse population that is served by ENCSD as well as other interested entities. At the meeting, both written comments and verbal comments were considered by the Board of Directors. After careful review of all comments, the Plan was adopted as prepared as no modifications were required in response to the comments received at the public hearing. A copy of the resolution adopting the 2010 UWMP update is included in Appendix B. It is the intent of ENCSD to implement the 2010 Plan as detailed in Section 6. Any changes to the proposed implementation of the DMM s are discussed in Section 6. The Plan will be submitted to the California Department of Water Resources, the California State Library, the City of Bakersfield, and the County of Kern no later than July 18, 2011 which is within 30 days of adoption by the District on June 20, Commencing no later than August 15, 2011, the District will have a copy of the 2010 UWMP available for public review at the District Offices (see address below) during normal business hours. The UWMP will also be posted to the District website ( East Niles Community Services District 1417 Vale Street Bakersfield, CA Phone Fax Timothy P. Ruiz, PE General Manager truiz@eastnilescsd.org East Niles Community Services District 1-3

8 Section 2: System Description 2.01 Service Area Physical Description Law Describe the service area of the supplier (10631(a)). (Describe the service area) climate (10631(a)). ENCSD was formed by an election held December 21, 1954, in accordance with Community Services District Law of the State of California. On November 8, 1955, the voters approved a resolution providing for the issuance of $1,500,000 of revenue bonds. The proceeds of these bonds were used to acquire the properties and rights of the East Bakersfield Water Company and the Pacific Water Company. During the month of April 1956, the District commenced operations for the purpose of furnishing water distribution services to the residents within its boundaries. In 1960, the voters of the District petitioned to have the powers of the District expanded to include sanitary sewer. Some years later, the voters approved a combination general obligation and revenue bond issue to cover the sewer collection system. The District entered into a joint exercise of powers agreement with the City of Bakersfield for sewage treatment and agreements with both the City of Bakersfield and County of Kern for joint use of sewer trunk lines. According to a 1959 report, at its creation the District covered 2,440 acres, had approximately 3,100 water connections, and served a population of approximately 10,500 people. Currently, the District covers approximately 5,700 acres, has approximately 7,500 connections, and serves a population of approximately 24,062 people (see Figure 1). ENCSD s Sphere of Influence includes approximately 14,400 acres. Most of the District s Sphere of Influence is also included in the City of Bakersfield s Sphere Influence (see Figure 1). In fact, some lands within the District are also within the City limits as mentioned in Section 1. Bakersfield is situated near the southern horseshoe end of the San Joaquin Valley, with the Sierra Nevada Mountains to the east, the Tehachapi Mountains to the south, and the Temblor Range to the west. Elevations in the District range from almost 900 feet to less than 400 feet above sea level. The highest elevations are on the north, with somewhat lower elevations on the east, and the lowest elevations to the south and southwest. In general, the land slopes downhill to the southwest. The District is located on the eastern side of Bakersfield. The local climate is characterized with hot, dry summers and cooler, more humid winters. The Bakersfield area enjoys clear, sunny days for more than half of the year. Minimum temperatures often drop below 40 degrees Fahrenheit during the winter. Summers are hot with an average of 109 days per year exceeding 90 degrees Fahrenheit. Annual precipitation in the area averages approximately 6 inches and rain ( 0.01 inches per day) occurs about 40 days per year. Fog is common in the winter and may last for several weeks at a time. East Niles Community Services District 2-1

9 2.02 Service Area Population Law (Describe the service area) current and projected population... The projected population estimates shall be based upon data from the state, regional, or local service agency population projections within the service area of the urban water supplier... (10631(a)).... (population projections) shall be in five-year increments to 20 years or as far as data is available (10631(a)). Describe... other demographic factors affecting the supplier's water management planning (10631(a)). The population with ENCSD s boundary is currently estimated to be 24,062. By the year 2035 the population within ENCSD is expected to reach approximately 30,244. Table 2 summarizes the projected population within ENCSD s service area over the next 25 years. The data used to generate the projections was provided by the Kern Council of Governments and is based on data from the California Department of Finance. ENCSD s population projections were developed using Methodology 2 for a Category 3 Water Supplier. In developing the estimates, the District took into account changes in their service area due to annexation of properties not previously served by ENCSD. Table 2. Population Current and Projected Data source Service area population 24,062 24,860 25,754 27,035 28,499 30,244 KernCOG (based on DOF) Water service is primarily domestic serving residential areas with some commercial operations. There remain some agricultural lands within the District. Many such agricultural lands use District water for irrigation. The District is fully metered and has been since its inception. It is the opinion of the District Board of Directors that water meters encourage water conservation. East Niles Community Services District 2-2

10 Section 3: System Demands 3.01 Baselines and Targets Law An urban retail water supplier shall include in its urban water management plan... due in 2010 the baseline daily per capita water use, urban water use target, interim urban water use target, and compliance daily per capita water use, along with the bases for determining those estimates, including references to supporting data ( (e)). As part of the 20x2020 Water Conservation Plan, a directive was issued to reduce statewide per capita urban water use by 20 percent by the year The Water Conservation Bill of 2009 (SBX7-7) is one of the policy bills that provides the regulatory framework to support the statewide reduction. With the incorporation of the Water Conservation Bill into the California Water Code it has become necessary for urban retail suppliers to develop baseline water use and water use targets and track their progress toward achieving those targets. DWR developed the Methodologies for Calculating Baseline and Compliance Urban Per Capita Water Use in late 2010 to provide the methodologies to consistently develop baseline and compliance numbers. The Methodologies guidebook provides four methods by which a supplier can calculate their baseline and targets. ENCSD used Method 1 (Eighty percent of the supplier s baseline per capita use) in developing values for the baseline and target per capita numbers. ENCSD followed the DWR Methodologies Figure D-2 development process in preparing the baseline and target numbers. Process 1: Determine the Base Daily Per Capita Water Use ENCSD identified their distribution system area for each year in the base period range of 1995 to 2004 (see Table 13). See Figure 2 for a representation of the ENCSD service area boundary and how it has changed throughout the baseline period. ENCSD determined the population within their distribution area for each year in the baseline period. As described in Section 2.02, the calculations were based on information provided by the Kern Council of Governments which is based on California Department of Finance numbers. Each traffic analysis zone (TAZ) that overlaps ENCSD was identified and the percentage of TAZ within ENCSD was calculated. Gross water use was summarized for each baseline year based on the Public Water System Statistics forms provided to DWR by ENCSD annually (see Table 14). The records include a breakdown of supply by source (i.e., wells, surface, and purchased). Figure 2 shows the key points of measurement for the gross water use numbers. Annual daily per capita water use numbers were developed for each year in the baseline period. The average of the annual daily uses was developed and determined to be the Base Daily Per Capita Water Use (404 gpcd). Process 2: Determine the Urban Water Use Target The Urban Water Use Target is the annual average daily per capita water use value that the District is required to be in compliance with by 2020 to be eligible for funding administered by the State. ENCSD followed Method 1. East Niles Community Services District 3-1

11 Method 1 required simply multiplying the Base Daily Per Capita Water Use (404 gpcd) by 80% to determine the 2020 Urban Water Use Target (323 gpcd). Process 3: Confirm the Urban Water Use Target ENCSD selected a 5-year baseline period ending between 2007 and The period selected was 2003 to 2007 (see Table 13). ENCSD applied the already determined service area, population, and gross water use numbers to this 5-year period and determined an average 5-Year Base Daily Per Capita Water Use (409 gpcd) and 95% of the 5-Year Base Daily Per Capita Water Use (388 gpcd) (see Table 15). The Urban Water Use Target (323 gpcd) was determined to be lower than the 95% 5-Year Base Daily Per Capita Water Use (388 gpcd) and therefore the Urban Water Use Target remained (323 gpcd). Process 4: Determine the Interim Urban Water Use Target The final step was to determine the Interim Urban Water Use Target. The Interim Urban Water Use Target is the average daily per capita water use value that the District is required to be in compliance with by 2015 to be eligible for funding administered by the State. The Interim Urban Water Use Target was determined by adding the Base Daily Per Capita Water Use value (404 gpcd) and the Urban Water Use Target (323 gpcd) and dividing by two. The calculated 2015 Interim Urban Water Use Target is 363 gpcd. Table 13. Base Period Ranges Base Parameter Value Units 2008 total water deliveries 10,263 AFY 2008 total volume of delivered recycled water 0 AFY 10- to 15-year base period 2008 recycled water as a percent of total deliveries 0 percent Number of years in base period 10 years Year beginning base period range 1995 Year ending base period range 2004 Number of years in base period 5 years 5-year base period Year beginning base period range 2003 Year ending base period range 2007 East Niles Community Services District 3-2

12 Sequence Year Base period year Table 14. Base Daily Per-Capita Water Use 10- to 15-Year Range Calendar Year Distribution System Population Daily system gross water use (mgd) Annual daily per capita water use (gpcd) Year , Year , Year , Year , Year , Year , Year , Year , Year , Year , Year 11 Year 12 Year 13 Year 14 Year 15 Base Daily Per Capita Water Use 404 Table 15. Base Daily Per-Capita Water Use 5-Year Range Base period year Sequence Year Calendar Year Distribution System Population Daily system gross water use (mgd) Annual daily per capita water use (gpcd) Year , Year , Year , Year , Year , Base Daily Per Capita Water Use 409 A summary of the District s baselines and targets determined in this section are presented below. A discussion of the District s plan to reduce water use with the goal of achieving compliance with its 2020 Urban Water Use Target is presented in Section As noted in the Guidebook, a water supplier may select a different Target Method in its 2015 Plan. Therefore the method selected and the determination of targets will be reevaluated during the preparation of the District s 2015 Plan. Summary of Baselines and Targets Base Daily Per-Capita Water Use Interim Urban Water Use Target (2015) Urban Water Use Target (2020) 404 gpcd 363 gpcd 323 gpcd East Niles Community Services District 3-3

13 3.02 Water Demands Law Quantify, to the extent records are available, past and current water use, and projected water use (over the same five-year increments described in subdivision (a)), identifying the uses among water use sectors, including, but not necessarily limited to, all of the following uses: (A) Single-family residential; (B) Multifamily; (C) Commercial; (D) Industrial; (E) Institutional and governmental; (F) Landscape; (G) Sales to other agencies; (H) Saline water intrusion barriers, groundwater recharge, or conjunctive use, or any combination thereof; (I) Agricultural (10631(e)(1) and (2)). The water use projections required by Section shall include projected water use for single-family and multifamily residential housing needed for lower income households, as defined in Section of the Health and Safety Code, as identified in the housing element of any city, county, or city and county in the service area of the supplier ( (a)). Tables 3 and 4 summarize the available District records for water deliveries by account type. ENCSD records contain a breakdown of deliveries by category as follows: 1) single-family residential, 2) multi-family residential, 3) Commercial/Institutional, 4) Industrial, 5) Landscape Irrigation, and 6) Other. Tables 5 through 7 contain projections of use by user category for the years 2015 through The number of users in each category was projected based on the KernCOG projected growth rates per 5-year period. KernCOG projected growth rates range between 0.6% and 1.1% through the year The residential sector is anticipated to grow at the KernCOG projected rates. ENCSD has a complex mix of commercial customers, ranging from markets, restaurants, insurance offices, beauty shops, and gas stations to multi-story office buildings, outlet and regional shopping centers, and highvolume restaurants and other facilities serving the visitor population. This sector is anticipated to grow at the KernCOG projected rates. ENCSD has a small industrial sector, primarily centered on food processing (winery, carrot processing) and light manufacturing. The industrial sector increased between 2005 and 2010 and the growth is anticipated to continue at the KernCOG projected rates. Landscape use is anticipated to grow at the KernCOG projected rates. While not anticipated, it is possible that increased efficiency and landscape conversions at existing parks, golf courses, and cemeteries could help offset new demand resulting from projected increases in this sector. Agricultural water demand is projected to remain constant through Agricultural land use within ENCSD is limited. Crops grown within ENCSD include oranges and grapes. There have been no recent indications that the agricultural lands will convert to other uses. East Niles Community Services District 3-4

14 Table 3. Water Deliveries Actual, 2005 (Cubic Feet) Metered Not metered Total # of Water use sectors # of accounts Volume accounts Volume Volume Single family 6, ,659, ,659,100 Multi-family ,878, ,878,300 Commercial ,146, ,146,400 Industrial 41 13,417, ,417,000 Institutional/governmental Landscape 36 33,009, ,009,600 Agriculture 3 1,310, ,310,200 Other 19 5,453, ,453,500 Total 7, ,874, ,874, Table 4. Water Deliveries Actual, 2010 (Cubic Feet) Water use sectors # of accounts Volume 2010 Metered Not metered Total # of accounts Volume Volume Single family 6, ,641, ,641,400 Multi-family ,883, ,883,300 Commercial ,112, ,112,400 Industrial 10 18,323, ,323,200 Institutional/governmental Landscape 45 26,401, ,401,400 Agriculture 2 858, ,700 Other Total 7, ,220, ,220,400 Table 5. Water Deliveries Projected, 2015 (Cubic Feet) Metered Not metered Total # of Water use sectors # of accounts Volume accounts Volume Volume Single family 7, ,504, ,504,950 Multi-family ,300, ,300,800 Commercial ,438, ,438,309 Industrial 10 18,929, ,929,870 Institutional/governmental Landscape 46 27,274, ,274,094 Agriculture 2 858, ,700 Other Total 7, ,305, ,305, East Niles Community Services District 3-5

15 Table 6. Water Deliveries Projected, 2020 (Cubic Feet) Metered Not metered Total # of Water use sectors # of accounts Volume accounts Volume Volume Single family 7, ,191, ,191,240 Multi-family ,888, ,888,217 Commercial ,923, ,923,155 Industrial 11 19,607, ,607,143 Institutional/governmental Landscape 48 28,251, ,251,398 Agriculture 2 858, ,700 Other Total 7, ,719, ,719, Water use sectors Table 7. Water Deliveries Projected 2025, 2030, and 2035 (Cubic Feet) # of accounts optional Metered metered metered Volume # of accounts Volume Single family 7, ,188,398 8, ,748,143 Multi-family ,159, ,753,324 Commercial ,047, ,473,904 Industrial 11 20,577, ,685,908 Institutional/governmental Landscape 51 29,649, ,246,635 Agriculture 2 858, ,700 Other Total 8, ,481,365 8, ,766,614 # of accounts Volume The projections for the residential category of user have been developed to account for the use by singlefamily and multi-family low-income residential housing needs. ENCSD consulted the KernCOG Regional Housing Needs Assessment to determine the percentage of low-income housing within the ENCSD service area. Based on the projected needs contained therein, it was determined that 41% of the housing need would be low income. The ratio of single-family to multi-family housing in ENCSD was maintained. Table 8 contains projections of demand for single-family and multi-family low-income housing through Table 8. Low-Income Projected Water Demands (Cubic Feet) Low Income Water Demands Single-family residential 84,195,835 87,212,798 91,529,317 96,459,172 Multi-family residential 21,914,523 22,699,780 23,823,285 25,106,429 Total 106,110, ,912, ,352, ,565,601 At the present time, ENCSD does not nor does it have plans to sell water to any outside agencies. Furthermore, ENCSD does not plan to engage in any direct groundwater recharge or water recycling. However, the volume of water produced from groundwater and surface sources is greater than the delivered volume due to unaccounted for water (i.e., system losses). Tables 9 and 10 show the planned uses through 2030 and the system losses respectively. Table 11 shows the total projected use within ENCSD based on East Niles Community Services District 3-6

16 Tables 3 through 10. The total water use numbers include the delivered volume (as measured at the customer meter) and estimated system losses (differential between water produced and water delivered). Table 9. Sales To Other Water Agencies (Cubic Feet) 1 Water distributed None Total ENCSD does not sell water to any outside entity. Table 10. Additional Water Uses And Losses (Cubic Feet) 1 Water Use Saline barriers Groundwater recharge Conjunctive use Raw water Recycled water System losses 66,539,348 54,164,320 55,954,712 57,959,720 60,828,385 64,104,658 Other (define) Total 1 ENCSD does not use water for other purposes but does have system losses. Unaccounted for water assumed to be 13.9% of water pumped into the system (See Section 6.03). 2 Water accounted for in Tables 3 through 7 is not included in this table. Table 11. Total Water Use (Cubic Feet) Water Use Total water deliveries (Tables 3 to 7) 364,874, ,220, ,305, ,719, ,481, ,766,614 Sales to other water agencies (Table 9) Additional water uses and losses (Table 10) 66,539,348 54,164,320 55,954,712 57,959,720 60,828,385 64,104,658 Total 431,413, ,384, ,260, ,679, ,309, ,871, Water Demand Projections Law Urban water suppliers that rely upon a wholesale agency for a source of water shall provide the wholesale agency with water use projections from that agency for that source of water in five-year increments to 20 years or as far as data is available. The wholesale agency shall provide information to the urban water supplier for inclusion in the urban water supplier's plan that identifies and quantifies, to the extent practicable, the existing and planned sources of water as required by subdivision (b), available from the wholesale agency to the urban water supplier over the same five-year increments, and during various water-year types in accordance with subdivision (c). An urban water supplier may rely upon water supply information East Niles Community Services District 3-7

17 provided by the wholesale agency in fulfilling the plan informational requirements of subdivisions (b) and (c) (10631(k)). ENCSD relies upon in part upon a wholesale water supply from the Kern County Water Agency Improvement District No. 4. The contract between KCWA and ENCSD provides for an annual supply as detailed in Table 12 below. Table 12. Retail Agency Demand Projections Provided To Wholesale Suppliers (AFY) Contracted Wholesaler Volume Kern County Water Agency Yes 9,300 11,000 11,000 11,000 11, Water Use Reduction Plan Law Urban wholesale water suppliers shall include in the urban water management plans... an assessment of their present and proposed future measures, programs, and policies to help achieve the water use reductions required by this part ( ). Urban retail water suppliers are to prepare a plan for implementing the Water Conservation Bill of 2009 requirements and conduct a public meeting which includes consideration of economic impacts (CWC ). ENCSD has been evaluating options for reducing the water demands within the District to comply with both the Interim Urban Water Use Target (363 gpcd) and the Urban Water Use Target (323 gpcd) by 2015 and 2020 respectively. As ENCSD has been fully metered from the formation of the District, the option of encouraging conservation through conversion from flat rate to metered rates is not available. Therefore, ENCSD is focusing their evaluation and planning on other available options such as: System Loss Reduction ENCSD plans to investigate options for identifying areas of loss. Losses may be due to physical losses (leaks, theft, etc.) or apparent losses due to inaccurate metering at points of production and delivery. ENCSD is evaluating the process of performing a water loss audit in accordance with AWWA M36. The audit should serve to identify areas where losses can be reduced. Any additional water losses that can be eliminated will bring the District closer to reaching the Interim Urban Water Use Target. Rate Structure Adjustments ENCSD will evaluate the impact and effectiveness of adjusting their rate structure to encourage conservation. At present, the District s rates are based on a Readinessto-Serve Charge and a Quantity Charge. The option of changing to a tiered rate structure will be evaluated in terms of cost and effectiveness. ENCSD considered the economic impacts of implementing the Water Conservation Bill of 2009 requirements on June 20, East Niles Community Services District 3-8

18 Section 4: System Supplies 4.01 Water Sources Law Identify and quantify, to the extent practicable, the existing and planned sources of water available to the supplier over the same five-year increments described in subdivision (a) (10631(b)). ENCSD is fortunate to have a variety of existing water sources, including groundwater and imported treated surface water. The District has identified and will continue to consider potential additional supplies that could be made available through importing, and short- and long-term water transfers, including but not limited to the following, City of Bakersfield, Kern Delta Water District, Groundwater, Recycled Water, etc. A. Surface Water (KCWA) With the development of the treatment facilities in connection with the Kern County Water Agency Improvement District No. 4 (ID4), ENCSD was able to execute a contract for 5,000 acre feet of treated surface water annually. Treated water from KCWA s Henry C Garnett Water Purification Plant is also delivered to NORMWD and CWS. The Henry C Garnett Water Purification Plant (HCGWPP) currently treats 25,000 acre-feet (AF) annually and is rated at 45 million gallons per day (MGD). The HCGWPP recently completed a treatment facilities expansion that increased the peaking capacity of the plant and associated distribution facilities. As part of the planning process for the expansion project, ENCSD and the KCWA signed a new water supply contract that will provide ENCSD with an additional 6,000 AF of water per year on top of the existing 5,000 AF. The agreement was signed in 2005 and provides for a ramping up of supply over several years. The combined total surface water supply from ID4 will be 11,000 AF. Per the September 2005 Agreement Between Kern County Water Agency and East Niles Community Services District for a Water Supply, the water supply is to be for the benefit of the lands and inhabitants served by ENCSD within the confines of KCWA s ID4. If and when the District acquires a water supply that could be treated at the HCGWPP, then water (with agreement by the Agency) could be moved to serve other areas within the District which may be outside of KCWA s ID4. B. Surface Water (Kern Delta Water District) ENCSD and Kern Delta Water District (KDWD) are currently working to negotiate the purchase by ENCSD of an annual surface water supply of between 2,000 and 6,000 AF. The water from KDWD would be Kern River water delivered either to KCWA s treatment plant, CWS treatment plant, or a future ENCSD treatment plant for treatment and delivery into the ENCSD distribution system. ENCSD has completed a conceptual level feasibility study to evaluate constructing a new District treatment plant as well as the raw water lines and treated water lines necessary to integrate a new plant into the existing system. As negotiations are ongoing this supply has not been included as one of the District s supplies. C. Recycled Water ENCSD provides sewer collection. Collected sewage is sent to the City of Bakersfield s Wastewater Treatment Plant No. 2 where it is treated to a secondary level and then used as an irrigation supply for East Niles Community Services District 4-1

19 restricted farming uses. It is expected that this practice will continue in the future and aid the groundwater basin through in lieu recharge. The District has completed a study evaluating how to best provide sewer service to areas that are within the District s Sphere of Influence but not currently in the District. The study includes both an evaluation of the feasibility of the District constructing their own wastewater treatment plant and a schematic level layout of recycled water distribution facilities. All identified recycled water lines would be installed by developers along with their water and sewer lines in anticipation of recycled water being available within the near future. As use of recycled water is still under evaluation it has not been included as one of the District s supplies. D. Groundwater ENCSD s groundwater supply is discussed in detail in Section 4.02 below. Table 16 shows the actual supply for 2010 and the projected water supply capacities by source for the years 2015 to Table 17 summarizes the projected source capacity of the Kern County Water Agency surface supply. Table 16. Water Supplies Current And Projected (AFY) Water Supply Sources Wholesaler Water purchased from: supplied volume Kern County Water Agency Yes 5,171 11,000 11,000 11,000 11,000 Wholesaler 2 Wholesaler 3 Supplier-produced groundwater 3,791 9,300 9,300 9,300 9,300 Supplier-produced surface water Transfers in Exchanges In Recycled Water Desalinated Water Total 8,962 20,300 20,300 20,300 20,300 Table 17. Wholesale Supplies Existing and Planned Sources of Water (AFY) Contracted Wholesale Sources Volume Kern County Water Agency Yes 9,300 11,000 11,000 11, Groundwater Law (Is) groundwater... identified as an existing or planned source of water available to the supplier... (10631(b))? (Provide a) copy of any groundwater management plan adopted by the urban water supplier, including plans adopted pursuant to Part 2.75 (commencing with Section 10750), or any other specific authorization for groundwater management (10631(b)(1)). (Provide a) description of any groundwater basin or basins from which the urban water supplier pumps groundwater (10631(b)(2)). East Niles Community Services District 4-2

20 For those basins for which a court or the board has adjudicated the rights to pump groundwater, (provide) a copy of the order or decree adopted by the court or the board (10631(b)(2)). (Provide) a description of the amount of groundwater the urban water supplier has the legal right to pump under the order or decree (10631(b)(2)). For basins that have not been adjudicated, (provide) information as to whether the department has identified the basin or basins as overdrafted or has projected that the basin will become overdrafted if present management conditions continue, in the most current official departmental bulletin that characterizes the condition of the groundwater basin, and a detailed description of the efforts being undertaken by the urban water supplier to eliminate the long-term overdraft condition (10631(b)(2)). (Provide a) detailed description and analysis of the location, amount, and sufficiency of groundwater pumped by the urban water supplier for the past five years. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records (10631(b)(3)). (Provide a) detailed description and analysis of the amount and location of groundwater that is projected to be pumped by the urban water supplier. The description and analysis shall be based on information that is reasonably available, including, but not limited to, historic use records (10631(b)(4)). At the time the District was formed, groundwater was the only source of water available to the service area. Over the years, surface water sources became available to the District and currently surface water sources provide approximately half of the supply available to the District. The District operates their system such that surface water is the predominant source for the District and is augmented with the groundwater supply. It is expected that this trend toward surface water will continue in the future, but that groundwater will continue to be used within the District s service area. ENCSD presently has seven active groundwater wells spaced throughout the lower elevation, southern portion, of the District. The pumping capacities for the seven wells are as follows (the annual capacities listed assume wells operate 75% of day): Well gpm (665 AFY) Well gpm (1,028 AFY) Well gpm (1,028 AFY) Well 19 2,000 gpm (2,420 AFY) Well 20 1,600 gpm (1,936 AFY) Well 21 1,400 gpm (1,694 AFY) Well gpm (544 AFY) All of the wells, except Well 21 which can do both, are configured such that they do not pump directly into the distribution system but rather all pump to a common distribution location, which is called the Kern Citrus Tank Facility. The District relies on the booster pump station at the Kern Citrus Tank Facility to pump the well water into the higher elevation storage reservoirs in the northern portion of the District. Although the combined capacity of all wells is slightly more than 9,300 AF per year (assuming wells run 18 hours per day), the amount of water that is available to the District, except that area served by Well 21, is limited by the capacity of the booster pump facility, which is currently approximately 5,300 gpm (8,550 AF/YR). In order to realize the full benefit of the District s existing and planned wells the booster pump facility will need to be upgraded to exceed the well capacity (currently 7,700 gpm). It should be noted that the District has East Niles Community Services District 4-3

21 constructed the new Kern Citrus Pump Station to be expandable to a capacity of 7,840 gpm if a fourth pump is installed and the main transmission line to the ENCSD Pump Station is replaced. ENCSD pumps groundwater from the Kern County Subbasin (No ) of the San Joaquin Valley Basin. The basin is currently non-adjudicated. DWR Bulletin 118 indicates that the groundwater level in the basin has remained essentially unchanged over the last 30 years. ENCSD keeps records of District pumping within the ENCSD boundary. As shown in Table 18, the District s present well capacity (9,300 AFY) far exceeds their existing well demand. Table 18. Groundwater Volume Pumped (AFY) Metered or Basin Name(s) Unmetered Kern County Subbasin No Metered 4,822 5,649 4,955 3,862 3,791 Total groundwater pumped 4,822 5,649 4,955 3,862 3,791 Groundwater as a percent of total water supply In order to project pumped water volumes for the years 2015 to 2030 it was necessary to assume a volume of surface supply that would be used within ID4 boundaries. It has been assumed that with limited infill areas remaining within the District boundary that the areas within ID4 will increase from 5,500 AFY to 6,000 AFY over the next 20 years. Therefore, Table 19 shows the required pumping to supplement the surface supply. Table 19. Groundwater Volume Projected to be Pumped (AFY) Basin Name(s) Kern County Subbasin No ,780 3,970 4,315 4,730 Total groundwater pumped 3,780 3,970 4,315 4,730 Groundwater as a percent of total water supply Transfer Opportunities Law Describe the opportunities for exchanges or transfers of water on a short-term or long-term basis (10631(d)). ENCSD is not currently directly engaged in any water transfers or exchanges. However, the District does benefit from KCWA s involvement in multiple transfer and exchange opportunities that contribute to the reliability of the District s KCWA surface water supply. None Total Transfer Agency Table 20. Transfer and Exchange Opportunities (AFY) Transfer or Exchange Short Term or Long Term Proposed Volume 4.04 Desalinated Water Opportunities Law Describe the opportunities for development of desalinated water, including, but not limited to, ocean water, brackish water, and groundwater, as a long-term supply (10631(i)). East Niles Community Services District 4-4

22 ENCSD is not located near the ocean or any significant brackish groundwater supplies. However, ENCSD has in the past preliminary evaluated the feasibility of treating impaired groundwater supplies on the west side of the San Joaquin Valley for potential treatment and delivery to a water storage district on the west side of the valley. If said delivery occurred, an equivalent amount of SWP water from the west side district could then be delivered to ENCSD. At present the implementation of such a program is thought to be financially out of consideration for the District s customers Recycled Water Opportunities Law Provide, to the extent available, information on recycled water and its potential for use as a water source in the service area of the urban water supplier. The preparation of the plan shall be coordinated with local water, wastewater, groundwater, and planning agencies that operate within the supplier's service area (10633). (Describe) the wastewater collection and treatment systems in the supplier's service area, including a quantification of the amount of wastewater collected and treated and the methods of wastewater disposal (10633(a)). (Describe) the quantity of treated wastewater that meets recycled water standards, is being discharged, and is otherwise available for use in a recycled water project (10633(b)). (Describe) the recycled water currently being used in the supplier's service area, including, but not limited to, the type, place, and quantity of use (10633(c)). (Describe and quantify) the potential uses of recycled water, including, but not limited to, agricultural irrigation, landscape irrigation, wildlife habitat enhancement, wetlands, industrial reuse, groundwater recharge, indirect potable reuse, and other appropriate uses, and a determination with regard to the technical and economic feasibility of serving those uses (10633(d)). (Describe) the projected use of recycled water within the supplier's service area at the end of 5, 10, 15, and 20 years, and a description of the actual use of recycled water in comparison to uses previously projected pursuant to this subdivision (10633(e)). (Describe the) actions, including financial incentives, which may be taken to encourage the use of recycled water, and the projected results of these actions in terms of acre-feet of recycled water used per year (10633(f)). (Provide a) plan for optimizing the use of recycled water in the supplier's service area, including actions to facilitate the installation of dual distribution systems, to promote recirculating uses, to facilitate the increased use of treated wastewater that meets recycled water standards, and to overcome any obstacles to achieving that increased use (10633(g)). East Niles Community Services District manages wastewater collection for its customers. Treatment is provided by the City of Bakersfield at Wastewater Treatment Plant No. 2. ENCSD understands that wastewater recycling is an important tool to use in reducing demands upon the groundwater basin as well as surface water supplies. For that reason, the District prepared a feasibility study regarding the construction of a wastewater treatment plant either solely by the District or in conjunction with a local wastewater agency to treat effluent to tertiary levels. The District would require developers to pay the costs of constructing both the plant (or expanding an existing plant) and the reclaimed water line infrastructure that would be used in the future to irrigate large landscaped areas and reduce the demand on the District s potable water supply. East Niles Community Services District 4-5