Hyannis, Massachusetts Water Quality Report
Water quality data for 1 water system serving 35,000 people.
Water Source
Detected Contaminants
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Compliance & Violations
Active Violations (8)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (79)
73
Jul 11, 2017
73
Jul 11, 2017
52
Oct 1, 2009
52
Oct 1, 2009
25
Sep 1, 2009 — Sep 30, 2009
+ 74 more resolved violations
Frequently Asked Questions
Is Hyannis tap water safe to drink?
Hyannis's water meets all EPA maximum contaminant levels. However, 3 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Hyannis tap water?
3 contaminants have been detected in Hyannis's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Hyannis?
Install a water filter rated for the specific contaminants found in Hyannis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Hyannis have any water quality violations?
Yes, Hyannis currently has 8 active violations. See the violations section above for details.