It is illegal to discharge chlorinated water to the storm drain system.
Water in pools, spas, and fountains is treated with a variety of chemicals such as chlorine and other additives. Draining into storm drains can harm our waterways.
Properly maintained pools, spas, and fountains reduce the need to drain
We recommend that you take the following steps to minimize the number of times you have to drain your pools, spas, and fountains.
- Pay attention to the proper chemical levels.
- Maintain the water filtration and circulation systems.
- Manage pH and water hardness. This will reduce copper pipe corrosion that can stain your pool and end up in waterways.
- Hold down algae buildup through regular chlorine use, which prevents the need for the more toxic algaecides. And ask your pool maintenance service or local pool supply store for help in resolving persistent algae problems without using copper algaecides.
When cleaning your pools, spas, and fountains:
- Don’t clean a filter in the street, gutter, or storm drain.
- Rinse cartridge filters onto a dirt area, and shovel filter residue onto the soil.
- Wash sand and diatomaceous earth filters onto a dirt area and dispose of spent filter materials in the trash.
How to drain to the sewer
If you don’t have a suitable dirt area to drain your pool, the
Finding your sewer cleanout
- Control discharge rate. Discharging too quickly and at too high a rate can cause the sewer to back up in your house, your neighbor’s house, or from manholes in the street. Typically, the sewer cleanout and service line to your home can handle the discharge from a 2-inch hose.
- Control discharge quality. Maintain the proper chemical balance and filtration in pools and spas. The desirable pH level is 7.4 to 7.6, while the desirable level of free (total) chlorine is 1.0 – 3.0 parts per million. A pool company can help you determine and adjust your pool’s pH and free chlorine levels.
- Settle backwash. Provide a settling tank for filter backwash water before discharging to the sewer. And remember: Put your spent diatomaceous earth filter material in the garbage.
- Minimize chemical use. Dispose of unwanted or unused hazardous pool chemicals properly and use copper algaecides only when necessary.
Getting EID Involved
EID must approve any discharge equal to or greater than 25,000 gallons per day. To calculate the volume of your pool, visit http://www.backyardcitypools.com/swimmingpools/Pool-Volume-Calculate.htm.
EID must also approve any permanent plumbing connection to the sanitary sewer. Please contact us prior to construction.
Click here for printable trifold brochure.
- Storm water pollution:
El Dorado County Storm Water Pollution
Prevention (530) 621-5927
- Central Valley Regional Water Quality
- Sanitary sewer discharges:
El Dorado Irrigation District (530) 622-4513
- Household hazardous waste disposal:
El Dorado County Environmental
Management (530) 626-4141 or
Call the local household hazardous collection
center at (916)933-6692 or go to
their website to find out where to dispose of
hazardous waste for free.