Septic Savvy. How to care for your Residential Septic System H o u s e h o l d I n f o r m a t i o n K i t

Transcription

1 Septic Savvy How to care for your Residential Septic System H o u s e h o l d I n f o r m a t i o n K i t

2 This information kit is designed to help residents understand the importance of monitoring and maintaining their septic system. By using the information contained in the kit you can: Save Money Protect Human Health Protect the Local Environment Top Ten Savvy Steps: 1. Locate your septic tank and dispersal system (drainfield). You will be prepared if there is a problem. 2. Check the operation of your system annually. Look for signs of failure. 3. Have your septic tank pumped regularly. Health authorities recommend pumping every two to five years. Combine the pump-out with a professional inspection. 4. If you have a package treatment plant, set up a contract for annual maintenance. 5. Make sure your system has an effluent filter to reduce the amount of solids entering your drainfield. 6. Keep a running maintenance record. 7. Reduce your water consumption. Too much water use will flush solids into your drainfield rather than have them settle in the tank. 8. Use environmentally friendly cleaning products. Some chemicals can upset the proper balance of bacteria needed to provide primary treatment inside your tank. 9. Recycle or properly dispose of hazardous products. Do not pour them down the drain or put them in the garbage. 10. protect your drainfield by leaving it as undisturbed as possible. Do not drive or park on it. Landscape with grass rather than plants with roots that can damage your system.

3 Don t let a failing septic system cost you money. Your home is one of your most valuable investments. Taking care of your septic system is like an insurance policy on that investment.

4 EFFLUENT FILTER Need more information? Septic Savvy A B C CRD Hotline 625 Fisgard Street Victoria, BC V8W 1R7 Phone: Environmental Sustainability Septic Systems Explained Properly functioning and maintained onsite septic systems are an excellent means of treating domestic wastewater. They are used for homes that are not connected to a public sewer D The D-Box evenly divides the discharge into a network of pipes that lie buried in drain rock in trenches in the dispersal system C (drainfield). Small holes in the pipes allow the wastewater to seep into the drain rock and then to the soil. Natural filtration and further bacterial action remove any remaining particles in the wastewater. Vancouver Island Health Authority Vernon Avenue Victoria, BC V8X 5A7 Phone: Assoication of Professional Engineers and Geoscientists of B.C. (List of Professionals for Sewerage System Regulation) Phone: apeginfo@apeg.bc.ca How to Care for Your Residential Septic System line. Although many different types of systems are used, they generally operate under the same principles. In a typical onsite septic system (Type 1), wastewater from sinks, tubs, showers and toilets flushes out of the house into a septic tank that separates and stores any solid particles that either settle to the bottom or float to the top. A In the case of a package treatment plant type of system (Types 2 & 3), a tank called a trash tank may precede the treatment plant. When it finally reaches the water table, the wastewater has been treated and cleansed. D When septic systems work properly, they are efficient, inexpensive to maintain and safe for people and the environment; if they fail, they can cause odours, water pollution, major repair costs and health hazards. When wastewater doesn t get proper treatment, contaminants can leach into groundwater that supplies our wells or drain directly into our lakes, streams and backyards! Under the Public Health Act, Applied Science Technologists & Technicians of BC Onsite Wastewater Registration Program (includes ROWP list) th Street Surrey, BC V3R 0S4 Consumer Information Line: ROWP(7697) Ministry of Health Services 1515 Blanshard Street, 4th floor Victoria, BC V8W 3C8 Phone: the operation and use of your septic system is regulated by the Beneficial bacteria help to break down the accumulated solids B.C. Sewerage System Regulation. The owner/user of an onsite in these tanks, but eventually the solids build up and must be wastewater system (septic system) must ensure it is operated pumped out. The partially treated wastewater then flows from the tank through an effluent filter B and into a distribution box in accordance with the maintenance plan that is provided by the designer or planner of the system. The owner/user is required to keep records of the system maintenance. Only an Authorized Person (AP), specifically a Registered Onsite Wastewater Practitioner (ROWP) Capital Regional District 625 Fisgard Street, Victoria, BC V8W 1R7 T: F: (D-Box). or Professional Engineer may work on septic systems (see contact information). Printed on recycled paper.

5 The Do s of Septic Care The Don ts of Septic Care Consider attending a free 2 hour CRD Septic Savvy Workshop (see CRD contact information). Learn and record the location of your septic system, including tank and dispersal area. Don t allow potential poisons to get into your dispersal system, including paint, solvents, antifreeze, fuels, oil, pesticides or herbicides. They upset the beneficial bacteria in your system and can leach into groundwater and cause serious health or environmental concerns. Use environmentally friendly alternatives where possible. Have an Authorized Person (AP*) develop a maintenance plan (see contact information). Allow easy access to the system for monitoring and maintenance. Keep a record of pumping, inspections and other maintenance. Install an effluent filter if you don t already have one. Special units are available for retrofitting to an existing tank. Solids will be kept out of your dispersal system, and your system will last longer. Have a maintenance plan / service contract for package treatment plants, and have an AP* attend to repairs promptly. Arrange for an AP* to do an inspection the next time you have your system pumped. An AP* should inspect the entire system: tank, tees or baffles, effluent filter, distribution box, dispersal system and pump chamber (if applicable). An AP* is separate from a pumper. Arrange for another inspection in two to five years and a pump-out according to existing bylaws or at a frequency appropriate to your own particular circumstances, as determined by the inspector. Practice water conservation. Limit the number of high water use activities done consecutively or at the same time. For example, spread out laundry washings over the week and avoid running the dishwasher at the same time. Also, use water sparingly when watering over or near your dispersal system. Use alternatives to toxic cleaners and chemicals. Harmful chemicals can kill the beneficial bacteria in your septic tank, causing you to have your tank pumped more often. Toxins can also be carried to your dispersal system and into watercourses or drinking wells. Be aware that human wastes from people on medication (eg. antibiotics) can affect the performance of your septic system and may require more frequent pumping of your tank. Leftover medications should be returned to your pharmacy. Don t pour hazardous waste down the drain. Take hazardous wastes to hazardous waste disposal depots. Contact the CRD Hotline (see contact information) for more information. Don t discharge water softener backwash into a septic system. Don t use septic tank starters or similar products. They can do more harm than good. Allow the natural bacteria to work on their own. Don t use granular drain cleaners. Only a small amount can kill all of the beneficial bacteria in your system, leading to rapid build-up of solids or dispersal system clogs. Don t use a garburator to dispose of food waste and other solids. Your tank will fill up prematurely and require more frequent pumping. Don t park, drive, pave or put heavy objects or machinery over your dispersal system. This can compact the soil, crush pipes and keep air from getting into the ground - all of which can lead to system failure. Don t plant trees or shrubs in the dispersal system area. Their roots can damage or plug the dispersal system pipes. Grass is ideal. Don t allow roof drains, perimeter drains or surface water runoff from driveways and slopes to discharge into your tank or onto the dispersal system. Excessive water can flood the system and cause premature failure. Don t use your toilet or drains as a trash can. Cooking grease, fats, cigarette butts, disposable diapers, sanitary napkins, hair, plastics, lint, metal, rubber, coffee grounds, tea leaves and cat litter should all be kept out of your septic system. Don t pour hazardous waste down the drain. Take hazardous wastes to hazardous waste disposal depots. Contact the CRD Hotline (see contact information) for more information. Care and Maintenance Neglect or abuse of your septic system can cause it to fail. A failed system can: Cause a serious health threat to your family, neighbours and pets Pollute ditches, streams, lakes, the ocean or groundwater Be very expensive and difficult to repair Signs of a failing septic system: Sewage surfacing over the dispersal system (especially after a heavy rainfall) Lush, green growth or soggy areas over the dispersal area Slow or backed up drains, toilets or sinks Sewage odours around the property Common causes of septic system failure are: Lack of proper maintenance of the septic tank (or package treatment plant) Excessive water intrusion into the drainfield area Overloading or abuse of the system with solids or chemicals Start your long-term The key to a healthy, long lasting septic system is to protect the tank and dispersal area from becoming clogged with solids. Here s what you laundry savings with a can do: Establish a maintenance plan with an AP* $ 125 rebate Check your system annually to ensure that it s working properly Contact your maintenance provider immediately if the system is malfunctioning Have your septic tank pumped according to existing bylaws or at a frequency appropriate to your own particular circumstances, as determined by the inspector Ensure that your effluent filter is clean Conserve water Divert surface water away from your dispersal area, and keep harmful material out of the system If you are considering an addition to your home, contact the Vancouver Island Health Authority (VIHA) office for advice on whether your septic system will need upgrading. VIHA and the Applied Science Technologists and Technicians of BC (ASTTBC) Consumer Information Line (see contact information) can answer septic system questions. Don t attempt repairs or alterations to your septic system yourself. Only an AP* should work on your septic system (see contact information). *An Authorized Person (AP) is either a Registered Onsite Wastewater Practioner (ROWP) or a Professional Engineer (P.Eng.) Capital Regional District 625 Fisgard Street, Victoria, BC V8W 1R7 T: F:

6 Septic Savvy Get informed! Come to a free, two hour workshop and learn: How your septic system works How to care for your septic system How to detect the signs of system failure How to save money How to set-up a maintenance plan Who to contact To enroll in a workshop, learn more, view video clips or download your own personal maintenance record contact: CRD Hotline Phone: hotline@crd.bc.ca Or visit the website at:

7 Information Sheet #1 An introduction to your septic system. Septic Savvy Are you the owner of a septic system? If so, you are in good company. There are 27,000 septic systems in the Capital Region, and that number increases annually by more than 500 new installations. Your septic system can provide effective, long-term wastewater treatment, right in your own backyard. If your system is working properly, it is an environmentally friendly and economically sound treatment option. Out of sight, out of mind? Unfortunately septic systems are out of sight. Many homeowners don t realize that there may be a problem until their system is already failing. It is estimated that up to 20% of septic systems in our region are malfunctioning. The most common cause of failure is lack of maintenance. Proper maintenance has a significant impact on how well your system works and how long it lasts. Your home is one of your most important investments. Taking care of your septic system is like an insurance policy on that investment. How does my septic system work? Wastewater from your sinks, toilets and laundry drains through a pipe from your home into your septic tank. Your septic tank is designed to hold the wastewater long enough to allow solids to settle at the bottom and oil and grease to float to the top. Natural bacteria in the tank start to breaking down the solids; however, eventually the solids build up and must be pumped out. Regular pumping will reduce the amount of solids entering your drainfield and ensure proper drainage and treatment. The partially treated wastewater from your tank flows through an outlet into a distribution box. The box evenly distributes the discharged wastewater into a network of pipes underneath the drainfield. The wastewater begins to percolate into the soil through small holes in the pipes. Natural filtration and microorganisms in the soil remove any remaining harmful particles in the wastewater. The treated and cleansed wastewater passes into the groundwater and returns to the water cycle. (More over)

8 Why should I care for my septic system? There are three main reasons for maintining your septic system: Save money. A failing septic system can be expensive to repair or replace. You can protect yourself against costly surprises through regular preventative actions like inspections and pump-outs of your system and by learning the do s and don ts of septic care. Protect the health of your family. A failing septic system can release inadequately treated household wastewater and offensive odours, often right in your backyard. Human wastewater contains disease causing organisms and can pose health risks to your family and your neighbours. Protect water quality. We all depend on clean water. A septic system uses the environment to treat wastewater. A failing system releases untreated or partially treated wastewater that can pollute our creeks, lakes, shorelines and groundwater. Failing systems contribute to shellfish bed closures and contaminate drinking water supplies. Signs of Septic System Failure It is time to call a professional if you notice any of the following: Slowly draining sinks and toilets Gurgling sounds in the plumbing Unpleasant odours around your property Patches of lush growth over the drainfield Soggy or wet ground over the drainfield Sewage surfacing How do I care for my septic system? Here are ten steps you can take to maintain your system: 1. Locate your septic tank and drain field. You will be prepared if there is a problem. 2. Check the operation of your system annually. Look for signs for failure (see Signs of Failure). 3. Have your septic tank pumped regularly. Health authorities recommend pumping every two to five years. Combine the pump-out with a professional inspection. 4. If you have a package treatment plant, set up a regular annual maintenance contract. 5. Make sure your system has an effluent filter to reduce the amounts of solids entering your drain field. 6. Keep a running maintenance record. 7. Reduce your water consumption. Too much water use will flush solids into your drain field rather than have them settle in the tank. 8. Use environmentally friendly cleaning products. Some chemicals can upset the proper balance of bacteria needed to provide primary treatment inside your tank. 9. Recycle or properly dispose of hazardous products. Do not pour them down the drain or put them in the garbage. 10. Protect your drain field by leaving it as undisturbed as possible. Do not drive or park on it. Landscape with grass rather than plants with roots that can damage your system. Maintenance Regulations The Sewerage System Regulation Act requires an Authorized Person to install, repair or maintain a septic system. Authorized Persons are qualified registered practitioners or professionals who meet the requirements under the Act. To find a registered practitioner in your area, contact: Applied Science Technologists & Technicians of BC - Onsite Wastewater Registration Program Visit owrp.asttbc.org or call ext. 236 To find a professional in your area contact: Association of Professional Engineers and Geoscientists of British Columbia Visit or call Capital Regional District 625 Fisgard Street, PO Box 1000, Victoria, BC Canada V8W 2S6 Hotline hotline@crd.bc.ca

9 Information Sheet #2 Caring for your septic system drainfield. Septic Savvy Protect your Drainfield The drainfield includes the pipes that discharge your wastewater as well as the soil beneath those pipes that receives and further treats the wastewater. The drainfield is the most complicated and expensive part of the septic system to repair or replace it is a substantial investment. Treating it right and protecting it from damage can save considerable money and protect water quality and your family s health. Remember to maintain easy access to your tank and drainfield at all times for regular inspection and pumping. Frequently Asked Questions 1. What can I plant over my drainfield? Grass is the ideal cover for drainfields. If your tank covers are buried, keep in mind that plantings over the tank from inlet to outlet will have to be removed every three to five years for inspection and pumping. 2. Can I plant trees and shrubs near my drainfield? Trees and shrubs generally have extensive root systems that seek out and grow into wet areas such as drainfields. If you do plan to plant trees near a drainfield, consult an expert to discuss your ideas and needs. 3. Can I plant a vegetable garden over my drainfield? No. Growing vegetables over a drainfield is not recommended. Vegetables need watering and excess water in the soil reduces its ability to treat wastewater. The deep roots of some vegetables may damage drainfield pipes. Bed preparation, such as rototilling or deep digging, can also damage pipes. 4. What about landscape plastic or fabric under mulch? No. Plastic reduces the necessary air exchange in the drainfield soil. Even mulch or bark over the drainfield is not recommended because it reduces air exchange and retains water. (More over)

10 5. Can I build a carport or camper pad over the drainfield? How about a tennis court or a hot tub? No, for two reasons. First, you should avoid driving over the drainfield. The pressure of vehicles and heavy equipment compact the soil and can damage pipes. Second, impermeable materials such as concrete and asphalt reduce evaporation and the supply of oxygen to the soil. Oxygen is critical to the proper breakdown of sewage by soil microorganisms. 6. How about putting my carport over the replacement area? No. The designated drainfield replacement area (reserve area) should be left undeveloped and protected from compaction. It should be treated with the same care as your drainfield. 7. Does livestock need to be kept off drainfields? In the winter, livestock trample and muddy the soil; in the summer they compact it. Again, this is not good for the soil s ability to exchange oxygen. Even a dog kennel or confinement area should not be sited over the drainfield. 8. Rain water is directed onto my drainfield. Is this a problem? Yes. Extra water will saturate the soil and prevent the drainfield from treating wastewater properly. Downspouts and stormwater from surfaces such as driveways and patios should be diverted away from the septic tank and drainfield. A small trench uphill from a drainfield can help direct water away. 9. How close to the drainfield can I install a sprinkler system? Water lines should be at least 10 feet from all components of the septic system. Be sure all sprinkler lines are fitted with approved backflow prevention devices and check them annually for leaks. EFFLUENT FILTER 10. How does an effluent filter protect my drainfield? An effluent filter fits securely in your outlet T and is highly effective at keeping solids out of the drainfield. It forces the wastewater to pass through small holes before entering the drainfield and keeps solids inside the septic tank where they can be pumped out. They range in price from $75 to $300 and are well worth it. 11. My roof gutters are connected to my septic system is this ok? No. Clean water wastes, such as footing drains, roof drains, water softeners, or dehumidifiers do not need to be connected to the septic system, they only add excess water. Water conservation should be practiced in order to minimize the flow of water through the drainfield. How does the soil treat wastewater? The soil filters out particles that make wastewater appear cloudy. Organic matter is removed as it is a food source fro microoganisms living in the soil Disease-causing bacteria are filtered out of the wastewater by the soil and once trapped, either die in this hostile environment or become a source of food for microorganisms. 4 Viruses are chemically attracted to soil particles which removes them from the wastewater. Capital Regional District 625 Fisgard Street, PO Box 1000, Victoria, BC Canada V8W 2S6 Hotline hotline@crd.bc.ca

11 Information Sheet #4 Cleaning products & your septic system. Septic Savvy Alternative Cleaning Products Some cleaning products can be harmful to your septic system. Septic systems are biological systems for the treatment of wastewater; the tank contains bacteria that slowly but surely digest the sludge. These bacteria are sensitive and can easily be upset by chemical products. The soil in the drainfield contains microorganisms which are also sensitive to harmful chemicals and these chemicals can pass through the soil polluting our ground and surface water. The best approach to keeping a septic system healthy and protecting our environment is to take care what goes down the drain, and not neglect periodic pumping and inspection of the system. Ingredients to keep on hand: Baking soda Borax Vinegar Baby oil Pure soap flakes Phosphate free dish soap Salt Lemon juice Washing soda Recipes: All purpose cleaners: Dissolve 4 tablespoons baking soda in 1 litre warm water. Add lemon juice to cut grease. Mix ½ cup vinegar and 1 4 cups of warm water. Kitchen cleaner: Mix white vinegar with ¼ tsp of dish soap in a spray bottle. Oven cleaner: Mix equal parts baking soda and salt. Add enough water to produce a paste; apply and scrub with a scouring pad. Bleach alternative: Mix ½ cup Borax with 4 litres of hot water. Drain Cleaner: Pour ½ cup baking soda down the drain. Follow with ½ cup white vinegar. Cover and let sit for 15 minutes. Flush with 2 litres of boiling water. Pour a kettle of boiling water down the drain (not your toilet it may crack) weekly to melt grease that may be building up. Scouring Powders: Baking soda and scouring pad. Equal parts vinegar and salt. Toilet bowl cleaners: Make a paste of Borax and lemon juice let stand and then scrub. Sprinkle a few tablespoons of baking soda and scrub with a brush. Add a few drops of lemon for freshness. Tub / Tile Cleaner: Mix ¼ cup baking soda and ½ cup white vinegar. Hand Cleaner: To get paint or grease off your hands rub with baby oil, wipe dry and wash. Laundry detergent: Use 1 cup pure soap flakes or pure soap powder and 3 tbsp washing soda. (More over)

12 Information Sheet #3 Water conservation & your septic system. Septic Savvy Water Conservation One key to a healthy septic system is to minimize water use in order to keep solids well settled on the bottom of the tank. Septic Systems are designed to hold wastewater long enough to allow solids to settle to the bottom forming a sludge layer and oil and grease to float to the top forming a scum layer. This process of settling and separating achieves primary treatment. If too much water is flowing into the septic tank, wastewater is pushed out into the drainfield before the settling and separating process has time to occur. The solids will be pushed out into the drainfield and can cause clogged pipes and clogged soil which is expensive to fix. In addition older septic systems were designed when people used less water. This means your septic system may be under capacity compared to today s standards. If your septic system is older, water conservation is especially important for you. Tips for conserving water Showers Reduce your shower time. If you shorten your shower time to 5 minutes or less, you can save up to 40 litres of water each time you shower. Replace your showerhead. Older models use 18 to 30 litres of water per minute while water efficient models use only 9.5 L or less per minute. Recycle unused water. While waiting for hot water to flow when preparing for a shower, catch the cool water in a bucket or water can. Later it could be used for your plants, pets or cleaning. Toilets Reduce the number of times you flush your toilet with multiple uses before flushing. Replace your old toilet with a 6L flush model. Older models can use as much as 13 to 26 litres of water per flush. If you are unable to replace your water guzzling toilet, retrofit your toilet with toilet displacement devices. You can fill plastic bottles with water or pebbles and place one to three of such bottles in a toilet tank (make sure they do not interrupt the flushing mechanisms or flow of the water). This will reduce the amount of water used per flush. Caution: Do not use a brick as this will disintegrate over time, causing serious and expensive problems in the plumbing. Do not use the toilet as a garbage can. Tissues and other items are often flushed away instead of going into other appropriate disposal containers. (More over)

13 Faucets Do not let the water run while brushing your teeth, you can save up to 22 litres of water. Do not run the faucet while washing your face or shaving; instead fill the basin with water. Retrofit all household faucets with water saving aerators or consider replacing with water efficient models. Aerators are inexpensive items that can be found at most hardware stores. Dishwashing Scrape dishes instead of rinsing them under running water. Compost kitchen wastes (organic matter) instead of using a garburator. Garburators consume hundreds of litres of water each week and increase the pumping frequency for septic tanks. When washing dishes by hand, do not wash or rinse with running water. Use tubs or plug the sink. Operate automatic dishwashers at full capacity and/or set the water level for the size of your load. Food Preparation Rinse fruit and vegetables in a pan instead of running water continuously and use the water for indoor and outdoor plant watering. Keep a bottle of drinking water in the refrigerator instead of running the tap for cold water. Plan ahead so that frozen food doesn t need to be thawed under running water or fill a bowl with cold water to thaw the food. Use a small amount of water and a lid on a pot when cooking. Laundry & Household Cleaning Operate washing machines at full capacity and use the water saving features. Buying a new washing machine? Consider purchasing a water-efficient washing machine; they use up to 40% less water and 60% less energy than top-loading machines. For regular household cleaning use a pail or bucket rather than running water. Partially fill the sink or a container when cleaning the kitchen or rinsing cloths. Leaking Toilets High volume water leaks often come from toilets. They are hard to detect and are usually caused by worn or misaligned parts. A toilet that continues to run after flushing could be wasting litres per hour enough water to fill a swimming pool in a year. Leaks can cost you up to $240 per year. Finding a toilet leak To check for a toilet leak, use a dye tablet or food colouring. Carefully remove the toilet tank lid. Place a dye tablet or some food colouring in the tank. Wait about fifteen minutes without flushing. After fifteen minutes check the water in your toilet bowl. If the water is coloured, you ve got a leak. Toilet repairs may require the assistance of a plumber. Capital Regional District 625 Fisgard Street, PO Box 1000, Victoria, BC Canada V8W 2S6 Hotline hotline@crd.bc.ca

14 Do's Do take leftover hazardous household chemicals to your approved hazardous waste collection depot for disposal. Do practice water conservation. Do have your tank pumped out and system inspected every 2-5 years. Do divert roof drains and surface water from driveways and hillsides away from the septic system. Do plant grass on your drainfield rather than trees or shrubs. Do install an effluent filter if you don t already have one. Don'ts Sample Septic System Sketch 1m (3 ) Septic Tank 15m (50 ) House 2m (6 ) 6m (18 ) 3m (10 ) Drainfield Don't allow anyone to drive or park over any part of the septic system. Don't use your toilet or drains as trash cans by dumping nondegradables down them. Don't make or allow repairs to your septic system without obtaining the required permit. For more information contact the Vancouver Island Health Authority (250) Septic Tank Maintenance Record Date Nature of Work (pumped out, general inspection, remedial) Note your Tank Size Here: Company or Inspector s Name (who carried out the work)