How do I know ACWD's Corrosion Control Program is working?
The results of our 2015 testing demonstrates that our Corrosion Control Program is effective. Every three years we work with at least 50 homeowners to collect a water sample from inside their homes. These samples are considered to be worst-case scenario because they are collected after the water has been still for at least 6 hours (so the water is in contact with the household plumbing for a long time), and the home’s plumbing was in place before the 1986 lead ban (so the plumbing is more likely to have lead). These samples are analyzed by our State-certified laboratory and results are reported to the California Division of Drinking Water, our Board of Directors, the public, and most importantly the homeowners who collected samples.

As part of our compliance with the United States Environmental Protection Agency’s Lead and Copper Rule, these results are compared to the Action Level of 15 parts per billion (ppb). ACWD is in compliance with the Lead Action Level because 90% or more of our samples are below the 15 ppb Action Level. In 2015, 90% of our samples were 8.1 ppb of lead or less.

Show All Answers

1. What is lead?
2. How does it get into drinking water?
3. What is ACWD doing to keep lead out of my water?
4. How do I know ACWD's Corrosion Control Program is working?
5. What can I do to keep lead out of my water?
6. Can you test my water for me?
7. Where can I learn more about lead in drinking water?