The quality of storm water (water that drains to lakes, rivers, and the Pacific Ocean) within the City of Lawndale is regulated by an NPDES (National Pollution Discharge Elimination System) Permit.
The current permit was adopted by the Los Angeles Regional Water Quality Control Board in November 2012. For additional information, visit the Los Angeles Region website below. "

The City of Lawndale forms a part of the Dominguez Channel Watershed, and currently contracts with CASC Engineering for NPDES Compliance Services. Lawndale encourages Best Management Practices to prevent storm water pollution.

Dominguez Channel is a 15.7-mile-long (25.3 km)stream in southern Los Angeles County, California that drains the Dominguez Watershed of 110 square miles (280 km2). The watershed area is 96% developed, largely residential, and artificially bounded by a system of storm drains and flood control channels. The stream begins just south of 116th Street in Hawthorne and travels through Lawndale and empties into the East Basin of the Port of Los Angeles on the Pacific Ocean.


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