Drinking-Water Systems Regulation O. Reg. 170/03

Transcription

1 Part III Form 2 Section 11. ANNUAL REPORT. Drinking-Water System Number: Drinking-Water System Name: Water Treatment Plant Drinking-Water System Owner: Regional Municipality of Durham Drinking-Water System Category: Large Municipal Residential System Period being reported: January 1 to December 31, 2005 Complete if your Category is Large Municipal Residential or Small Municipal Residential Does your Drinking-Water System serve more than 10,000 people? Yes [ ] No [ ] Is your annual report available to the public at no charge on a web site on the Internet? Yes [ ] No [ ] Location where Summary Report required under O. Reg. 170/03 Schedule 22 will be available for inspection. Regional Municipality of Durham Works Department 605 Rossland Rd E. 5 th Floor Whitby, Ontario L1N 6A3 Complete for all other Categories. Number of Designated Facilities served: Did you provide a copy of your annual report to all Designated Facilities you serve? Yes [ ] No [ ] Number of Interested Authorities you report to: Did you provide a copy of your annual report to all Interested Authorities you report to for each Designated Facility? Yes [ ] No [ ] Note: For the following tables below, additional rows or columns may be added or an appendix may be attached to the report List all Drinking-Water Systems (if any), which receive all of their drinking water from your system: Drinking Water System Name Drinking Water System Number Did you provide a copy of your annual report to all Drinking-Water System owners that are connected to you and to whom you provide all of its drinking water? Yes [ ] No [ ] Page 1 of 7

2 Indicate how you notified system users that your annual report is available, and is free of charge. [ ] Public access/notice via the web [ ] Public access/notice via Government Office Durham Region Works Dept. [ ] Public access/notice via a newspaper [ ] Public access/notice via Public Request [ ] Public access/notice via a Public Library [ ] Public access/notice via other method Bi-annual newsletter to residents Describe your Drinking-Water System The Water Treatment Plant is a surface water treatment facility that supplies quality potable water to approximately 148,400 consumers in the City of and approximately 24,000 consumers in Courtice, an urban area of the Municipality of Clarington. Raw water is drawn from Lake Ontario through two intake pipes. One is 750 mm in diameter extending 831 m into the lake to an intake structure at a depth of 7.6 m. The second is a 900 mm diameter pipe extending 924 m into the lake to an intake structure at a depth of 10.7 m. The treatment plant facility has a rated maximum flow of 134 ML/day (29 MIGD) in the summer and 94 ML/day (21 MIGD) in the winter. The treatment plant facility utilizes the following unit processes and systems: zebra mussel control, screening, pre-chlorination, low lift pumping, coagulation, flocculation, sedimentation, filtration, post-chlorination, water storage, and high lift pumping. The ten (10) filters are dual media sand/anthracite. The process is controlled and monitored by a SCADA (Supervisory Control and Data Acquisition) system. The distribution system delivers the treated water through approximately 680 kilometres of watermains in four (4) pressure zones, and includes three (3) reservoirs and four (4) booster stations. The distribution system in is interconnected with the distribution system of Whitby. List all water treatment chemicals used over this reporting period Chlorine (disinfectant) inum sulphate (coagulant agent) Hydrofluosilicic acid (fluoride) Were any significant expenses incurred to? [ ] Install required equipment [ ] Repair required equipment [ ] Replace required equipment Page 2 of 7

3 Please provide a brief description and a breakdown of monetary expenses incurred Modifications at Taunton Pumping Station for Pressure Zone 4 - $1,450,000 Rehabilitation of Watermains (Cement Lining) - $908,340 Connection of Feedermain on Grandview St. - $712,000 Cathodic Protection of Watermains - $114,340 Replaced Pump at Hortop Pumping Station - $20,000 Rebuilt Low Lift Pump #4 at water plant - $16,000 Replaced Rail of Filter 5 & 6 - $10,000 Added Anthracite Media to Filters at Plant #1 - $9,735 Leak Detection of Watermains - $7,790 Replaced Raw Water Flow Meter - $5,000 Rebuilt Diesel Engine of Low Lift Pump #2 (leaking gasket) - $4,000 Electrical Substation Maintenance - $4,000 Replaced Pump #2 at Waverly Pumping Station - $4,000 Provide details on the notices submitted in accordance with subsection 18(1) of the Safe Drinking-Water Act or section 16-4 of Schedule 16 of O.Reg.170/03 and reported to Spills Action Centre Incident Parameter Result Unit of Corrective Action Corrective Date Jan 07 Feb 09 Apr 12 May 09 Chlorine Residual Chlorine Residual Low Pressure 0.01 mg/l Area was flushed and chlorine residual at the water plant was increased until the affected area achieved a chlorine residual of above 0.20 mg/l as required by the Ontario Drinking Water Systems Regulation. The watermains within the affected area were cement-lined in July. Malfunctioning flow meter corrected mg/l Affected area was flushed until the chlorine residual was restored above 0.20 mg/l as per the Ontario Drinking Water Systems Regulation Pressure restored within 15 minutes. Microbiological samples were taken in the affected area. of the analyses performed on the samples met the Ontario Drinking Water Quality Standards. Action Date Jan Feb 09 Apr 12 May 09 Page 3 of 7

4 May 17 May 20 May 27 Jun 11 Sep 10 Dec 09 Zero Pressure Sodium (Plant) Water without coagulation treatment was removed from the process Partial pressure restored within three hours, complete restoration within 10 hours. Microbiological samples were taken in the affected area. of the analyses performed on the samples met the Ontario Drinking Water Quality Standards. Written notification distributed to residents in affected area. Temporarily increased chlorination and reduced flow through plant upon re-start. Water without coagulation treatment was removed from the process. Water without coagulation treatment was removed from the process mg/l A resample was taken at the plant. Result of the analysis performed on the resample was 14.5 mg/l. Sodium results above 20.0 mg/l will not need to be reported for the next 60 months (5 years). May 17 May 20 May 27 Jun 11 Sep 10 Dec 09 Page 4 of 7

5 Microbiological testing done under the Schedule 10, 11 or 12 of Regulation 170/03, during this reporting period. Number of E.Coli P/A Number of HPC Number of BKG Range of E.Coli MF Range of Total Coliform MF Total Coliform P/A Range of HPC (min #)- (max #) Range of BKG (min #)-(max #) Raw 203 <1-37 < < M Treated A A 52 < < <1-< Distribution A A 320 < <1-<1 87 <1-<1 <1-<1 MF: Membrane Filter; P/A Presence/Absence; BKG: Background Bacteria; HPC: Heterotrophic Bacteria; M: Estimated Count Operational testing done under Schedule 7, 8 or 9 of Regulation 170/03 during the period covered by this Annual Report. Number of Range of Grab (min #)-(max #) Turbidity filter effluent NTU Free Chlorine Plant Free Chlorine Distribution Fluoride (If the DWS provides fluoridation) NOTE: Record the unit of measure if it is not milligrams per litre. NOTE: For continuous monitors use 8760 as the number of samples. Summary of additional testing and sampling carried out in accordance with the requirement of an approval, order or other legal instrument. Date of legal instrument issued Parameter Date Sampled Result Unit of June 28, 2004/ Gross Beta Jan 01 Dec Bq/L January 5, 2005 Trihalomethanes - Plant Jan 04-Dec (annual average) ug/l Trihalomethanes - Distribution Jan 06 Dec (annual average) ug/l Tritium Jan 01 Dec 31 < Bq/L Residue Management inum Jan 07-Dec mg/l Chlorine Jan 07-Dec mg/l Suspended Solids Jan 07-Dec mg/l Summary of Inorganic parameters tested during this reporting period or the most recent sample results Page 5 of 7

6 Parameter Sample Date Result Value Unit of Exceedance Number of Antimony Jan 06 Nov <0.003 mg/l No 6 Arsenic Jan 06 Nov 30 < < mg/l No 6 Barium Jan 06, Aug mg/l No 2 Boron Jan 06, Aug 24 < mg/l No 2 Cadmium Jan 06 Nov 30 < mg/l No 6 Chromium Jan 06 Nov 30 < mg/l No 6 Lead - Distribution Jun 08, Nov 29 < mg/l No 2 Mercury Jan 06, Oct 12 <0.01 ug/l No 2 Selenium Jan 06 Nov 30 <0.002 mg/l No 6 Sodium Jan 06 Dec mg/l Yes (1)* 7 Uranium Jan 06, Aug 24 <0.01 mg/l No 2 Nitrite Jan 04 Dec 06 <0.02-<0.05 mg/l No 17 Nitrate Jan 04 Dec mg/l No 17 *Number in parentheses represents number of exceedance(s). Summary of Organic parameters sampled during this reporting period or the most recent sample results Parameter Sample Date Result Value Unit of Exceedance Number of Alachlor May 18, Nov 23 <0.4 ug/l No 2 Aldicarb May 18, Nov 23 <3.5 ug/l No 2 Aldrin + Dieldrin May 18, Nov 23 <0.006 ug/l No 2 Atrazine + N-dealkylated May 18, Nov 23 <0.08 ug/l No 2 metobolites Azinphos-methyl May 18, Nov 23 <0.2 ug/l No 2 Bendiocarb May 18, Nov 23 <3.0 ug/l No 2 Benzene May 18, Nov 23 <0.1 ug/l No 2 Benzo(a)pyrene May 18, Nov 23 <0.001 ug/l No 2 Bromoxynil May 18, Nov 23 <0.4 ug/l No 2 Carbaryl May 18, Nov 23 <0.2 ug/l No 2 Carbofuran May 18, Nov 23 <4.0 ug/l No 2 Carbon Tetrachloride May 18, Nov 23 <0.2 ug/l No 2 Chlordane (Total) May 18, Nov 23 <0.006 ug/l No 2 Chlorpyrifos May 18, Nov 23 <0.2 ug/l No 2 Cyanazine May 18, Nov 23 <0.2 ug/l No 2 Diazinon May 18, Nov 23 <0.2 ug/l No 2 Dicamba May 18, Nov 23 <0.4 ug/l No 2 1,2-Dichlorobenzene May 18, Nov 23 <0.1 ug/l No 2 1,4-Dichlorobenzene May 18, Nov 23 <0.1 ug/l No 2 Dichlorodiphenyltrichloroethane May 18, Nov 23 <0.008 ug/l No 2 (DDT) + metabolites 1,2-Dichloroethane May 18, Nov 23 <0.1 ug/l No 2 1,1-Dichloroethylene May 18, Nov 23 <0.3 ug/l No 2 (vinylidene chloride) Dichloromethane May 18, Nov 23 <0.5 ug/l No 2 2,4-Dichlorophenol May 18, Nov 23 <0.4 ug/l No 2 Page 6 of 7

7 2,4-Dichlorophenoxy acetic acid May 18, Nov 23 <0.6 ug/l No 2 (2,4-D) Diclofop-methyl May 18, Nov 23 <0.4 ug/l No 2 Dimethoate May 18, Nov 23 <0.3 ug/l No 2 Dinoseb May 18, Nov 23 <0.5 ug/l No 2 Diquat May 18, Nov 23 <0.1 ug/l No 2 Diuron May 18, Nov 23 <0.2 ug/l No 2 Glyphosate May 18, Nov 23 <2.0 ug/l No 2 Heptachlor + Heptachlor May 18, Nov 23 <0.008 ug/l No 2 Epoxide Lindane (Total) May 18, Nov 23 <0.005 ug/l No 2 Malathion May 18, Nov 23 <0.2 ug/l No 2 Methoxychlor May 18, Nov 23 <0.009 ug/l No 2 Metolachlor May 18, Nov 23 <0.2 ug/l No 2 Metribuzin May 18, Nov 23 <0.08 ug/l No 2 Monochlorobenzene May 18, Nov 23 <0.1 ug/l No 2 Paraquat May 18, Nov 23 <0.1 ug/l No 2 Parathion May 18, Nov 23 <0.2 ug/l No 2 Pentachlorophenol May 18, Nov 23 <0.4 ug/l No 2 Phorate May 18, Nov 23 <0.2 ug/l No 2 Picloram May 18, Nov 23 <0.7 ug/l No 2 Polychlorinated Biphenyls(PCB) May 18, Nov 23 <0.02 ug/l No 2 Prometryne May 18, Nov 23 <0.08 ug/l No 2 Simazine May 18, Nov 23 <0.08 ug/l No 2 THM Distribution Jan 06 Dec ug/l No 14 (NOTE: show latest annual average) Temephos May 18, Nov 23 <3 ug/l No 2 Terbufos May 18, Nov 23 <0.2 ug/l No 2 Tetrachloroethylene May 18, Nov 23 <0.3 ug/l No 2 2,3,4,6-Tetrachlorophenol May 18, Nov 23 <0.5 ug/l No 2 Triallate May 18, Nov 23 <2.0 ug/l No 2 Trichloroethylene May 18, Nov 23 <0.8 ug/l No 2 2,4,6-Trichlorophenol May 18, Nov 23 <0.5 ug/l No 2 2,4,5-Trichlorophenoxy acetic May 18, Nov 23 <0.5 ug/l No 2 acid (2,4,5-T) Trifluralin May 18, Nov 23 <0.006 ug/l No 2 Vinyl Chloride May 18, Nov 23 <0.2 ug/l No 2 List any Inorganic or Organic parameter(s) that exceeded half the standard prescribed in Schedule 2 of Ontario Drinking Water Quality Standards. Parameter Result Value Unit of Date of Sample (Only if DWS category is large municipal residential, small municipal residential, large municipal non residential, non municipal year round residential, large non municipal non residential) Page 7 of 7