Water Quality in 99581 — Emmonak, AK
EPA data for EMMONAK WATER SYSTEM
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 99581 in Emmonak, Alaska is served by EMMONAK WATER SYSTEM (EPA ID: AK2270299). This system provides water to approximately 820 people from surface water sources.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| September 1, 2025 | Chlorite | Monitoring | Unresolved |
| September 1, 2025 | Chlorite | Monitoring | Unresolved |
| August 1, 2025 | Chlorite | Monitoring | Unresolved |
| August 1, 2025 | Chlorite | Monitoring | Unresolved |
| July 1, 2025 | Haloacetic Acids (HAA5) | Monitoring | Unresolved |
| July 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2005 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2010 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2015 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2020 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2031 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2032 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2033 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2034 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2035 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2036 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2037 | Monitoring | Unresolved |
| July 1, 2025 | Atrazine | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2040 | Monitoring | Unresolved |
| July 1, 2025 | Contaminant 2041 | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Chlorite | Disinfection Byproducts | 108 | Yes |
| E. coli | Microbiological | 41 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 28 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 13 | No |
| Fecal Coliform | Microbiological | 8 | No |
| Lead and Copper Rule | Treatment Technique | 7 | No |
| Surface Water Treatment Rule | Treatment Technique | 5 | No |
| Contaminant 2005 | Other | 3 | No |
| Contaminant 2010 | Other | 3 | No |
| Contaminant 2015 | Other | 3 | No |
| Contaminant 2020 | Other | 3 | No |
| Contaminant 2031 | Other | 3 | No |
| Contaminant 2032 | Other | 3 | No |
| Contaminant 2033 | Other | 3 | No |
| Contaminant 2034 | Other | 3 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
What You Can Do
- Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
- Consider a home water test — Independent testing can reveal issues in your specific plumbing
- Install a certified water filter — NSF-certified filters can address specific contaminants
- Contact your water provider — Ask about current treatment and any ongoing remediation
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Alaska
- 99501 (Anchorage) — 263 violations
- 99505 (Jber)
- 99545 (Kongiganak) — 353 violations
- 99546 (Adak) — 94 violations
- 99547 (Atka) — 133 violations
- 99548 (Chignik Lake) — 97 violations
- 99550 (Port Lions) — 81 violations
- 99551 (Akiachak) — 78 violations
- 99552 (Akiak) — 15 violations
- 99553 (Akutan)
- 99554 (Alakanuk) — 423 violations
- 99556 (Anchor Point) — 9 violations
- 99558 (Anvik) — 167 violations
- 99559 (Bethel) — 125 violations
- 99561 (Chefornak) — 203 violations
- 99563 (Chevak) — 35 violations
- 99565 (Chignik Lagoon)
- 99567 (Chugiak) — 187 violations
- 99569 (Clarks Point) — 30 violations
- 99571 (Cold Bay) — 4 violations
Nearby Water Quality Reports
- 99554 (Alakanuk) — 7 mi — 423 violations
- 99563 (Chevak) — 93 mi — 35 violations
- 99585 (Marshall) — 94 mi
- 99558 (Anvik) — 137 mi — 167 violations
- 99590 (Grayling) — 141 mi
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 the tap water in 99581 safe to drink?
Emmonak’s water system has recorded 32 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.
Where does 99581’s water come from?
The primary water source for this area is surface water. EMMONAK WATER SYSTEM serves approximately 820 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 99581 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 99581. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 99581?
Radon zone data is not available for ZIP code 99581. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.