Water Quality in Kongiganak, AK (99545)

EPA violation data for public water systems serving ZIP code 99545.

Past Health-Based Violations

3 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 121 monitoring/reporting violations.

More violations than 97% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

1

Water Systems

124

Violations (5yr)

3

Health-Based

Location

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Water Systems Serving This Area (1)

Kongiganak Water System

3 health-based
Surface water 547 people served
124 violations (5yr) · 3 health-based · All resolved
Lead tested: 4.5 ppb (limit: 15 ppb) ✓ Copper tested: 1456 ppb (limit: 1300 ppb)

Contaminants Found

Surface Water Treatment RuleHealth-Based
45 violations
All resolved
Interim Enhanced Surface Water Treatment RuleHealth-Based
34 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

17 violations
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

13 violations
All resolved
E. COLIMonitoring
4 violations
All resolved
Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

3 violations
All resolved
Total Haloacetic Acids (HAA5)Monitoring
3 violations
All resolved
TTHMMonitoring
3 violations
All resolved
Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

2 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
4.5 ppb measured Action level: 15 ppb

Sampled: Jul 2025

Copper (Cu)

Exceeds limit
1456 ppb measured Action level: 1300 ppb

Sampled: Jul 2025

How Does This Compare?

Kongiganak (99545) has more violations than 97% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 124.

Fewer violations 97th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

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

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.

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