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Annual Water Quality Report now available

Update from Water Quality Team - May 2, 2023

Marin Water’s 2022 Annual Water Quality Report is now available online. The report outlines Marin Water’s ongoing commitment to providing high quality drinking water to our customers.  

Each year, the District conducts approximately 115,000 water quality and process control tests – from watershed to faucet – to ensure the water delivered to customers is safe to drink. The 2022 Report documents that your water continues to meet or exceed all federal and state standards.  Read the report now.

Additional questions or resource needs?

  • If you would like a hard copy of this report mailed to you, please call Marin Water at 415.945.1400.
  • If you have questions about water quality, please contact our Water Quality Laboratory at 415.945.1550 or