Water Quality in Seattle, WA (98144)
EPA violation data for public water systems serving ZIP code 98144.
10
Total Violations
2
Health-Based
8
Monitoring / Reporting
10
Resolved
What does this mean?
10 of 10 violations have been resolved. 2 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 8 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (10 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jun 30, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | May 31, 2025 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jul 31, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jul 31, 2024 | Resolved | N/A |
| Long Term 2 Enhanced Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Long Term 2 Enhanced Surface Water Treatment Rule | Health-Based | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Surface Water Treatment Rule | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
Violation Timeline
2025(4)
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
2024(6)
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
Long Term 2 Enhanced Surface Water Treatment Rule
41
Long Term 2 Enhanced Surface Water Treatment Rule
41
Surface Water Treatment Rule
36
Surface Water Treatment Rule
36
How Does This Compare?
Seattle (98144) has 10 recorded violations, including 2 health-based. All violations have been resolved, which is a positive sign for current water quality. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Whole House Carbon Filter
A solid baseline for improving overall water quality. Reduces chlorine, sediment, and many common contaminants throughout your entire home.
Targets:Chlorine, Sediment, Taste & Odor
Look for:NSF/ANSI 42 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.