Emmonak Water System
EPA ID: AK2270299 · 820 people served · 1 ZIP code
31 open EPA findings remain on record at Emmonak Water System — the utility supplies approximately 820 people.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 5 (2021) to 1 (2025). Violation counts have remained relatively steady.
Service Area Map
Coverage area for Emmonak Water System Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Emmonak Water System serves a community with a median household income of $55,417 and an estimated 945 residents across its service area.
🌊 Where Does Your Water Come From?
Emmonak Water System's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Detected Contaminants
How Emmonak Water System compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 8 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Chlorite at 31 mg/L exceeds the EPA maximum of 1 mg/L. Anemia and nervous system effects in infants and children. Consider ferrous sulfate reduction filtration.
E. coli at 15 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Fecal Coliform at 4 presence exceeds the EPA maximum of presence.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Emmonak Water System (EPA ID: AK2270299) is a community water system in Alaska that serves approximately 820 people from surface water sources.
This system serves ZIP code 99581 in Emmonak.
Average Home Safety Score: C (67/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2025 | Chlorite | Monitoring | Unresolved |
| August 1, 2025 | Chlorite | Monitoring | Unresolved |
| July 1, 2025 | Chlorite | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2959 | Monitoring | Unresolved |
| June 1, 2025 | Chlorite | Monitoring | Unresolved |
| May 1, 2025 | Chlorite | Monitoring | Unresolved |
| April 1, 2025 | Chlorite | Monitoring | Unresolved |
| April 1, 2025 | Contaminant 2959 | Monitoring | Unresolved |
| March 1, 2025 | Chlorite | Monitoring | Unresolved |
| March 1, 2025 | E. coli | Monitoring | Resolved |
| February 1, 2025 | Chlorite | Monitoring | Unresolved |
| January 1, 2025 | Stage 1 DBP Rule | Monitoring | Unresolved |
| January 1, 2025 | Contaminant 2959 | Monitoring | Unresolved |
| January 1, 2025 | Chlorite | Monitoring | Unresolved |
| December 1, 2024 | Chlorite | Monitoring | Unresolved |
| December 1, 2024 | Fecal Coliform | Monitoring | Resolved |
| December 1, 2024 | E. coli | Monitoring | Resolved |
| November 1, 2024 | Chlorite | Monitoring | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Chlorite | Disinfection Byproducts | 31 | Yes |
| E. coli | Microbiological | 15 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 8 | Yes |
| Fecal Coliform | Microbiological | 4 | No |
| Contaminant 2959 | Other Violation | 3 | No |
| Surface Water Treatment Rule | Treatment Failure | 3 | No |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Total Organic Carbon | Disinfection Byproducts | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | Yes |
Health Risk Details
Chlorite (EPA limit: 1 mg/L)
Anemia and nervous system effects in infants and children At-risk groups: infants, developing fetuses, people with G6PD deficiency.
Removal methods: ferrous sulfate reduction, activated carbon, reverse osmosis. Find the right filter →
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 99581 | 0.00094 mg/L | No | N/A |
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
- 99581 — Emmonak
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Emmonak Water System (AK2270299) on EPA.gov.
Frequently Asked Questions
Is Emmonak Water System water safe to drink?
Emmonak Water System has recorded 14 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Emmonak Water System serve?
Emmonak Water System serves approximately 820 people across 1 ZIP code in Alaska.
Where does Emmonak Water System get its water?
The primary water source is surface water.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Emmonak Water System (EPA ID: AK2270299) — request the latest Consumer Confidence Report or ask about specific contaminants.