Chelmsford, Massachusetts Water Quality Report
Water quality data for 2 water systems serving 31,550 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| PFBS | 0.004 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxA | 0.004 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFOA | 0.009 | 0.004 ug/L | 0.090 ug/L(EWG) | 223% | Above limit |
| PFOS | 0.007 | 0.004 ug/L | 0.300 ug/L(EWG) | 180% | Above limit |
| PFPeA | 0.004 | 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 (12)
4B
Jul 1, 2018
Violation
Unknown
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Unknown
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Unknown
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Resolved Violations (180)
03
Jan 1, 2017 — Mar 31, 2017
03
Jan 1, 2017 — Mar 31, 2017
03
Jan 1, 2017 — Mar 31, 2017
03
Jan 1, 2017 — Mar 31, 2017
03
Jan 1, 2017 — Mar 31, 2017
+ 175 more resolved violations
Frequently Asked Questions
Is Chelmsford tap water safe to drink?
Chelmsford'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 Chelmsford tap water?
5 contaminants have been detected in Chelmsford's water supply across 2 water systems. See the full contaminant table above for details.
How can I improve my water quality in Chelmsford?
Install a water filter rated for the specific contaminants found in Chelmsford's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Chelmsford have any water quality violations?
Yes, Chelmsford currently has 12 active violations. See the violations section above for details.