Your swimming pool, spa, or fountain maintenance practices can make a significant difference in the water quality of our creeks, the Napa River, and the San Francisco Bay. Many chemicals used in pool maintenance (e.g., chlorine, bromine, copper, and silver) are extremely toxic to aquatic life. For example, the California Department of Fish and Game has determined that levels of chlorine in water higher than 0.01 parts per million (ppm) are dangerous to the environment. The typical chlorine level maintained in a pool is 2-4 ppm; that is, 200-400 times the harmful level. By doing a few simple things, you can protect the fish and critters that live in our creeks and comply with local, State, and federal regulations. Remember that you are also responsible for the actions of your contractors. Be sure you know how your contractor will be disposing of the pool, spa, or fountain water and the filter cleaning rinsewater and backwash.
The following maintenance practices for swimming pools, spas, and fountains are approved by the NCSWMP agencies to reduce pollutants discharged to waterways. By following these practices, you can help protect water quality and comply with local, State, and federal regulations. Note: There are additional requirements for commercial swimming pool facilities under the State’s Health and Safety Code. Contact the Napa County Department of Environmental Management if you have questions about commercial swimming pool facilities.
1. Disposing of Swimming Pool, Spa, or Fountain Water
Note: All local jurisdictions require an encroachment permit before draining pool, spa, or fountain water to a public right of way (e.g., street, road, drainage easement). Lab analysis of the water may be required before an encroachment permit can be issued. Contact your local stormwater agency for more information.2. Disposing of Filter Rinsewater and Backwash
3. General Maintenance Tips