Water Quality in Seattle, WA (98168)

EPA violation data for public water systems serving ZIP code 98168.

335

Total Violations

16

Health-Based

319

Monitoring / Reporting

334

Resolved

What does this mean?

334 of 335 violations have been resolved. 16 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 319 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.

Water systems: 11 Population served: 107,043

Violations Detail (335 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
FluorideHealth-BasedN/A5.1Jun 30, 2025ResolvedBone disease (pain and tenderness of the bones); children may get mottled teeth
FluorideHealth-BasedN/A5.1Mar 31, 2025ResolvedBone disease (pain and tenderness of the bones); children may get mottled teeth
FluorideHealth-BasedN/A5.1Dec 31, 2024ResolvedBone disease (pain and tenderness of the bones); children may get mottled teeth
FluorideMonitoringN/AN/ADec 31, 2024ResolvedBone disease (pain and tenderness of the bones); children may get mottled teeth
Consumer Confidence RuleMonitoringN/AN/AOct 1, 2024ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AOct 1, 2024ResolvedN/A
FluorideHealth-BasedN/A5Sep 30, 2024ResolvedBone disease (pain and tenderness of the bones); children may get mottled teeth
Revised Total Coliform RuleMonitoringN/AN/AAug 31, 2024ResolvedN/A
Consumer Confidence RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(2)

Fluoride

02

Jun 30Resolved

Fluoride

02

Mar 31Resolved

2024(11)

Fluoride

02

Dec 31Resolved

Fluoride

03

Dec 31Resolved

Consumer Confidence Rule

72

Oct 1Resolved

Consumer Confidence Rule

72

Oct 1Resolved

Fluoride

02

Sep 30Resolved

Revised Total Coliform Rule

3A

Aug 31Resolved

Consumer Confidence Rule

71

Jun 30Resolved

Revised Total Coliform Rule

3A

Jun 30Resolved

Fluoride

03

Jun 30Resolved

Fluoride

02

Jun 30Resolved

Fluoride

02

Mar 31Resolved

How Does This Compare?

Seattle (98168) has 335 recorded violations, including 16 health-based. 1 remains unresolved. 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.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

UV Water Purifier

Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.

Targets:E. coli, Coliform, Giardia, Cryptosporidium

Look for:NSF/ANSI 55 (Class A) certified

Always look for filters certified by NSF International for the specific contaminants you want to remove.

Nearby ZIP Codes

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