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Water Quality
Annual Water Quality Reports
Download copies of ACWD Annual Water Quality reports dating back to 2003.

Main Cleaning
Find out when the water mains in your neighborhood will be cleaned.

Report a Water Quality or Pressure Concern
Use this form to report a water quality or pressure concern.

South Bay Aqueduct Watershed Protection
Learn about efforts to protect watershed lands surrounding the South Bay Aqueduct.

Treatment Plant Tours
Find information about tours of ACWD water treatment facilities.

Water Treatment Plant Descriptions
Learn about the ways in which ACWD purifies the tap water it delivers to homes and businesses in the Tri-City area.

Water Hardness Map
Use this map to determine the hardness of the water delivered to your neighborhood.

Water Quality FAQs
Get answers to frequently asked questions.

Water Quality Self-Diagnostic Tool
Use this tool to determine the possible causes of, and solutions for, a variety of water quality issues.

Local State-Certified Commercial Laboratories
Link to local State-certified commercial laboratory services

Contact Us
Technician in lab coat examines samples
ACWD Water Quality Division


43885 S. Grimmer Blvd.
Fremont, CA 94538

Ph: (510) 668-6500
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