Water Quality

Safe to Drink Water

To ensure that water is safe to drink, the United States Environmental Protection Agency (EPA) and the State Water Resources Control Board (SWRCB) prescribe regulations that limit the amount of certain constituents in drinking water. To meet these regulations, the Los Angeles County Waterworks Districts (LACWD) contracts with a state-certified laboratory to conduct all water quality analyses. These tests are performed routinely on water samples taken from the distribution system. Several key locations within the distribution system have been selected to test for bacteria, color, turbidity, odor, and disinfectant level on a regular interval to ensure that you receive safe and high quality drinking water. Our contract laboratory is equipped with state-of-the-art instruments capable of detecting contaminants in very minute quantities.

There are two drinking water quality standards, primary drinking water standards and secondary drinking water standards. Primary drinking water standards are set for substances that are thought to pose a health risk at certain levels and are enforceable by law. Secondary drinking water standards are set for substances that do not pose a health risk and are intended to control the aesthetic qualities related to the public acceptance of drinking water such as taste and smell. Secondary drinking water standards are not enforceable by law.

LACWD is committed to serving you a reliable supply of high quality water that meets and exceeds all primary and secondary drinking water standards. We strive to ensure your water is healthy and meets your aesthetic needs.

For additional information regarding drinking water regulations, please visit the EPA Ground Water and Drinking Water or State Water Board Division of Drinking Water Programs websites.



Annual Water Quality Reports

The California State Water Resources Control Board requires all water systems to prepare Annual Water Quality Reports (or Consumer Confidence Reports) by July 1 of each year. The purpose of the report is to raise customers’ awareness of the quality of their drinking water, where their drinking water comes from, what it takes to deliver water to their homes, and the importance of protecting drinking water sources. Below are the latest water quality reports for the Los Angeles County Waterworks Districts (LACWD), Peter J. Pitchess Honor Rancho Detention Center and Rancho Los Amigos National Rehabilitation Center. Click here for a map of LACWD's entire service area.

District Name 2018 2019 2020 2021
LACWD 21, Kagel Canyon PDF PDF PDF PDF
LACWD 29, Malibu & Marina Del Rey PDF PDF PDF PDF
LACWD 36, Val Verde (combined Santa Clarita Valley Water Quality Report) PDF PDF PDF PDF
LACWD 37, Acton PDF PDF PDF PDF
LACWD 40, Antelope Valley, Regions 4 & 34 (Lancaster & Desert View Highlands) PDF PDF PDF PDF
LACWD 40, Antelope Valley, Regions 24, 27 & 33 (Pearblossom, Littlerock & Sun Village) PDF PDF PDF PDF
LACWD 40, Antelope Valley, Regions 35 (Northeast Los Angeles County) PDF PDF PDF PDF
LACWD 40, Antelope Valley, Regions 38 (Lake Los Angeles) PDF PDF PDF PDF
LACWD 40, Antelope Valley, Regions 39 (Rock Creek) PDF PDF PDF PDF
Peter J. Pitchess Honor Rancho Detention Center PDF PDF PDF PDF
Rancho Los Amigos National Rehabilitation Center PDF PDF PDF PDF



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