Mattawa, Washington Water Quality Report
Water quality data for 3 water systems serving 5,361 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 14.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 140% | Above guideline |
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Compliance & Violations
Active Violations (8)
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Violation
Unknown
Resolved Violations (480)
1A
Jun 1, 2024 — Jun 30, 2024
3A
Nov 1, 2023 — Nov 30, 2023
71
Jul 1, 2023
71
Jul 1, 2023
71
Jul 1, 2023
+ 475 more resolved violations
Frequently Asked Questions
Is Mattawa tap water safe to drink?
Mattawa's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Mattawa tap water?
1 contaminants have been detected in Mattawa's water supply across 3 water systems. See the full contaminant table above for details.
How can I improve my water quality in Mattawa?
Install a water filter rated for the specific contaminants found in Mattawa's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Mattawa have any water quality violations?
Yes, Mattawa currently has 8 active violations. See the violations section above for details.