Holliston, Massachusetts Water Quality Report
Water quality data for 1 water system serving 15,713 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 | 0.005 | 0.004 ug/L | 0.090 ug/L(EWG) | 133% | Above limit |
| PFOS | 0.006 | 0.004 ug/L | 0.300 ug/L(EWG) | 163% | Above limit |
| PFPeA | 0.003 | 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 (16)
52
Oct 1, 2024
66
Apr 1, 2023
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Resolved Violations (272)
03
Oct 1, 2022 — Dec 31, 2022
03
Oct 1, 2022 — Dec 31, 2022
03
Oct 1, 2022 — Dec 31, 2022
03
Oct 1, 2022 — Dec 31, 2022
03
Oct 1, 2022 — Dec 31, 2022
+ 267 more resolved violations
Frequently Asked Questions
Is Holliston tap water safe to drink?
Holliston'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 Holliston tap water?
5 contaminants have been detected in Holliston's water supply across 1 water system. See the full contaminant table above for details.
How can I improve my water quality in Holliston?
Install a water filter rated for the specific contaminants found in Holliston's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Holliston have any water quality violations?
Yes, Holliston currently has 16 active violations. See the violations section above for details.