Spokane, Washington Water Quality Report
Water quality data for 35 water systems serving 426,965 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 12.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 120% | Above guideline |
| PFBS | 0.005 | 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) | 128% | Above limit |
| PFOS | 0.012 | 0.004 ug/L | 0.300 ug/L(EWG) | 300% | Above limit |
| PFPeA | 0.006 | 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
Get a Free Water Quality Consultation
Connect with a certified water treatment professional in Spokane, Washington.
Get Water Quality Alerts
Be the first to know when water quality changes in Spokane.
Compliance & Violations
Active Violations (2)
52
Jan 1, 2022
52
Jan 1, 2022
Resolved Violations (498)
71
Jul 1, 2025
03
Jul 1, 2025 — Sep 30, 2025
71
Jul 1, 2025
71
Jul 1, 2025
3A
Nov 1, 2024 — Nov 30, 2024
+ 493 more resolved violations
Frequently Asked Questions
Is Spokane tap water safe to drink?
Spokane'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 Spokane tap water?
6 contaminants have been detected in Spokane's water supply across 35 water systems. See the full contaminant table above for details.
How can I improve my water quality in Spokane?
Install a water filter rated for the specific contaminants found in Spokane's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Spokane have any water quality violations?
Yes, Spokane currently has 27 active violations. See the violations section above for details.