Cohasset, Massachusetts Water Quality Report
Water quality data for 1 water system serving 7,555 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBA | 0.007 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 168% | Above limit |
| PFOS | 0.004 | 0.004 ug/L | 0.300 ug/L(EWG) | 113% | Above limit |
| PFPeA | 0.005 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
Recommended Water Filters
Based on the contaminants detected in your water supply, these filtration systems are recommended:
Reverse Osmosis (RO)
Reverse osmosis systems remove up to 99% of PFAS compounds. Recommended for homes with detected PFAS.
Up to 99% PFAS removal
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Compliance & Violations
Active Violations (5)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (59)
71
Jul 1, 2022
71
Jul 1, 2022
38
Jun 1, 2021 — Jun 30, 2021
03
Apr 1, 2021 — Jun 30, 2021
03
Apr 1, 2021 — Jun 30, 2021
+ 54 more resolved violations
Frequently Asked Questions
Is Cohasset tap water safe to drink?
Cohasset's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Cohasset tap water?
5 contaminants have been detected in Cohasset's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Cohasset?
Install a water filter rated for the specific contaminants found in Cohasset's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Cohasset have any water quality violations?
Yes, Cohasset currently has 5 active violations. See the violations section above for details.