Water Quality in Chalkyitsik, AK (99788)

EPA violation data for public water systems serving ZIP code 99788.

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

80

Population

1

Water Systems

154

Violations (5yr)

28

Health-Based

Location

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Water Systems Serving This Area (1)

Chalkyitsik Village Water

28 health-based
Surface water 76 people served
154 violations (5yr) · 28 health-based
Lead tested: 5.5 ppb (limit: 15 ppb) ✓

Contaminants Found

Surface Water Treatment RuleHealth-Based
32 violations
All resolved
TTHMHealth-Based
26 violations
All resolved
Total Haloacetic Acids (HAA5)Health-Based
21 violations
Has active
Interim Enhanced Surface Water Treatment RuleMonitoring
29 violations
All resolved
ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

15 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

13 violations
All resolved
Public NoticeMonitoring
9 violations
All resolved
Lead and Copper RuleMonitoring

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

8 violations
Has active

Lead & Copper Levels

Lead (Pb)

Within limit
5.5 ppb measured Action level: 15 ppb

Sampled: Jul 2025

How Does This Compare?

Chalkyitsik (99788) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 154.

Fewer violations 98th 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.

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 →

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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