Stormwater - Wash Water (Gray Water)

Washing MachineWash water, gray water, and septic system wastewater are among the many common stormwater pollutants that can degrade water quality.  Stormwater runoff containing wash water and gray water has been found to contain high concentrations of pathogens such as bacteria, parasites, and viruses.  When they wash into our recreational waters they can make people sick with sore throats, intestinal problems, rashes, nausea, and eye and ear infections.  Wash water also contains nutrients such as phosphorus and nitrogen, that fertilize aquatic algae blooms and promote bacterial growth which can degrade water quality.


Your Regulatory Requirements - County of San Diego, Stormwater Ordinance


What can I do?
Use Best Management Practices (BMPs)! 
BMPs are techniques or controls used to prevent or reduce the discharge of pollutants, such as wash water and gray water, into the stormwater conveyance system also known as the storm drain system.

Helpful Information and Documents:
General Stormwater BMP Brochure
Pollutant Impacts on Water Quality
San Diego County Wastewater Agencies
CASQA BMP Handbooks

Tip: Drain washing machine water to sewer or septic system.


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If you have questions or would like additional information, 
call the County Stormwater hotline at 1(888) 846-0800
or e-mail us at watersheds@sdcounty.ca.gov

Report a Stormwater Violation On-Line
 
COUNTY OF SAN DIEGO
Department of Public Works
Watershed Protection Program
 
5510 Overland Ave., Suite 410, MS O326
San Diego,  CA  92123,  USA
(858) 495-5318           Fax: (858) 495-5263