Tacoma, Washington Water Quality Report
Water quality data for 130 water systems serving 628,246 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| 6:2 FTS | 0.009 | No federal limit | — | — | No federal limit |
| PFBA | 0.014 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFBS | 0.035 | No federal limit | 2000.0 ug/L(EPA Health Advisory) | 0% | Below guideline |
| PFHpA | 0.006 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxA | 0.048 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFHxS | 0.056 | 0.010 ug/L | 0.001 ug/L(EWG) | 558% | Above limit |
| PFOA | 0.006 | 0.004 ug/L | 0.090 ug/L(EWG) | 158% | Above limit |
| PFOS | 0.154 | 0.004 ug/L | 0.300 ug/L(EWG) | 3840% | Above limit |
| PFPeA | 0.110 | No federal limit | 1000.0 ug/L(EWG) | 0% | Below guideline |
| PFPeS | 0.020 | No federal limit | — | — | No federal 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
Active Violations (1)
51
Jul 1, 2008
Resolved Violations (999)
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
03
Jul 1, 2025 — Sep 30, 2025
+ 994 more resolved violations
Frequently Asked Questions
Is Tacoma tap water safe to drink?
Tacoma's water has 3 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.
What contaminants are in Tacoma tap water?
10 contaminants have been detected in Tacoma's water supply across 130 water systems. See the full contaminant table above for details.
How can I improve my water quality in Tacoma?
Install a water filter rated for the specific contaminants found in Tacoma's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Tacoma have any water quality violations?
Yes, Tacoma currently has 129 active violations. See the violations section above for details.