October 14 2021
Although we enjoy our backyard swimming pools and spas, draining water from them can harm our local creeks and streams if not done properly. Pollutants such as chlorine and other chemicals are harmful to aquatic wildlife, our waterways and the environment. When swimming pools or spas are drained into the stormwater system, this discharge goes directly to our local creeks and streams without being treated to remove pollutants.
The best management practice for pool water and spa discharge is to de-chlorinate and drain it into landscaping or other areas that allows the water to be absorbed and percolated into the ground. Water can also be drained into the sanitary sewer system through a legal sewer connection or clean-out. It is easy to eliminate chlorine levels to order to safely discharge swimming pool or spa water. Chlorine naturally dissipates over time. Test chlorine levels in the pool over a period of 3 to 5 days, without adding any additional chlorine to your pool or spa until the chlorine registers zero when using your test kit. When it reaches zero, you can then drain the water using the guidelines listed above before algae starts to grow.
Draining to landscaping or the sanitary sewer system is the preferred way to discharge swimming pool or spa water, but if necessary, it can be drained to the storm drain system ONLY if the water:
Has no chlorine, hydrogen peroxide, acid, saline (salt), or other chemicals;
pH level is between “7”-“8”;
Has no algae or harmful bacteria or is green in color;
Has no dirt, debris, or vegetation;
Is discharged slowly to not create sediment erosion or traffic hazards.