Water Quality in SEATTLE, WA (98108)

EPA violation data for public water systems serving ZIP code 98108.

276

Total Violations

5

Health-Based

271

Monitoring / Reporting

274

Resolved

What does this mean?

274 of 276 violations have been resolved. 5 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 271 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: 8 Population served: 472

Violations Detail (276 total)

ContaminantCategoryMCL LimitMeasuredDateStatusHealth Effects
E. COLIMonitoring0N/ASep 6, 2025ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
E. COLIMonitoring0N/ANov 4, 2024ActiveSevere gastrointestinal illness; may be fatal in vulnerable populations
Revised Total Coliform RuleMonitoringN/AN/AOct 31, 2024ResolvedN/A
Revised Total Coliform RuleMonitoringN/AN/AOct 31, 2024ResolvedN/A
TTHMMonitoringN/AN/AJun 30, 2024ResolvedN/A
Total Haloacetic Acids (HAA5)MonitoringN/AN/AJun 30, 2024ResolvedN/A
Total Haloacetic Acids (HAA5)MonitoringN/AN/AJun 30, 2024ResolvedN/A
Total Haloacetic Acids (HAA5)MonitoringN/AN/AJun 30, 2024ResolvedN/A
Lead and Copper RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A
Lead and Copper RuleMonitoringN/AN/AJun 30, 2024ResolvedN/A

Lead & Copper Levels

Violation Timeline

2025(1)

E. COLI

34

Sep 6Active

2024(15)

E. COLI

34

Nov 4Active

Revised Total Coliform Rule

3B

Oct 31Resolved

Revised Total Coliform Rule

3B

Oct 31Resolved

TTHM

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Lead and Copper Rule

51

Jun 30Resolved

Total Haloacetic Acids (HAA5)

27

Jun 30Resolved

TTHM

27

Jun 30Resolved

TTHM

27

Jun 30Resolved

TTHM

27

Jun 30Resolved

How Does This Compare?

SEATTLE (98108) has 276 recorded violations, including 5 health-based. 2 remain 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

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

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

NSF Certified Products → EPA Safe Drinking Water Guide →

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

Nearby ZIP Codes

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