Chromium-6 in Drinking Water

Chromium-6 (hexavalent chromium) is a naturally occurring element found in rocks, plants, and groundwater. It can also result from industrial processes. While many communities in California and across the nation have trace levels of Chromium-6 in their water, regulatory agencies have set limits to ensure long-term health protection.

Federal and State Standards

The U.S. Environmental Protection Agency (EPA) currently regulates total chromium (which includes Chromium-6 and Chromium-3) at a maximum contaminant level (MCL) of 100 parts per billion (ppb). In California, the State Resources Water Control Board (SWRCB) authorities have recently set the MCL for Chromium-6 at 10 ppb. 

Our District’s Current Status

Recent testing has shown that Chromium-6 levels in our district's water are above the California standard of 10 ppb, but well within the federal EPA’s total chromium limit of 100 ppb.

It’s important to emphasize:
➡ Your water remains safe to drink.
➡ These levels do not pose an immediate health risk.

Our district is actively working toward a treatment solution to reduce Chromium-6 concentrations in our water system.

Our Commitment to You

We are currently evaluating treatment options and developing a plan to bring Chromium-6 levels well below any applicable future standards. We are also working closely with state regulators and water quality experts to ensure a robust and effective response.

We are committed to keeping you informed throughout this process and to maintaining the high quality of your water.