El Segundo Water Department

Protecting Drinking water Quality at the Resource Source water safety is an important issue for every California. Large drinking water utilities are required by DDW to carry out an initial source drinking water assessment, which is after that updated through watershed sanitary surveys every single five years. Watershed sanitary surveys analyze possible sources of water contamination and suggest actions to better safeguard these source oceans. The most recent surveys intended for Metropolitan’s source oceans are the Colorado Water Watershed Sanitary Study - 2015 Upgrade, and the State Drinking water Project Watershed Hygienic Survey - 2016 Update. Source oceans used by Metropolitan - the Colorado Water and State Drinking water Project - have different water top quality challenges. Both are subjected to stormwater runoff, activities, wastewater discharges, animals, fires and other watershed-related factors that could impact water quality. Treatment to remove specific pollutants can be more expensive than measures to protect drinking water at the source, which explains why Metropolitan and other drinking water agencies invest assets to support improved watershed protection programs..

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