Watertown, New York Water Quality Report
Water quality data for 16 water systems serving 42,494 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 50.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 500% | Above guideline |
| PFBS | 0.014 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHxS | 0.004 | 0.010 ug/L | 0.001 ug/L(EWG) | 39% | Within limit |
| PFOA | 0.007 | 0.004 ug/L | 0.090 ug/L(EWG) | 183% | Above limit |
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
Resolved Violations (500)
3A
Sep 1, 2025 — Sep 30, 2025
3A
Sep 1, 2025 — Sep 30, 2025
3A
Sep 1, 2025 — Sep 30, 2025
3A
May 1, 2025 — May 31, 2025
3A
May 1, 2025 — May 31, 2025
+ 495 more resolved violations
Frequently Asked Questions
Is Watertown tap water safe to drink?
Watertown's water has 1 contaminant detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Watertown tap water?
4 contaminants have been detected in Watertown's water supply across 16 water systems. See the full contaminant table above for details.
How can I improve my water quality in Watertown?
Install a water filter rated for the specific contaminants found in Watertown's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Watertown have any water quality violations?
Yes, Watertown currently has 160 active violations. See the violations section above for details.