Water Quality in Selawik, AK: 92 Violations — Grade C
Grade C · Score 62/100 · 1 water system · Updated 2026-05-03
Selawik's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Selawik in AK has 92 EPA water violations documented — the compliance history below covers what was flagged and which local systems are associated with each finding.
Water Quality by ZIP Code in Selawik
Water quality varies across Selawik's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 99770 | B | 70 | 92 | 24 | View report → |
Violation Trend
EPA violations recorded for water systems serving Selawik.
Water Quality Overview
Selawik, Alaska receives a water quality grade of C with an overall score of 62 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Selawik have accumulated 92 EPA violations, including 24 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 846 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Selawik's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Selawik water systems is 0.0017 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 44% of homes built before 1986, Selawik has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Radon Risk
Selawik is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Selawik
Selawik is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 846 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Selawik. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Selawik
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Selawik Water Systems
The following contaminants have been detected or caused violations across Selawik's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| E. coli | Microbiological | N/A | 30 | 1 | Yes |
| Fecal Coliform | Microbiological | N/A | 24 | 1 | Yes |
| Chlorite | Disinfection Byproducts | 1 mg/L | 7 | 1 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 7 | 1 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 4 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 3 | 1 | No |
| Total Organic Carbon | Disinfection Byproducts | N/A | 2 | 1 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 2 | 1 | No |
| Stage 2 DBP Rule | Treatment Technique | N/A | 2 | 1 | Yes |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 2 | 1 | Yes |
| Lead | Inorganic | 0.015 mg/L | 1 | 1 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Selawik:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2024 | 10 | 10 |
| 2025 | 5 | 5 |
Violations have decreased from 10 in 2024 to 5 in 2025, indicating improving compliance.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Selawik. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-25 | State Informal Action |
| 2025-08-28 | State Formal Action |
| 2025-08-28 | State Informal Enforcement |
| 2025-07-21 | State Informal Enforcement |
| 2025-06-13 | State Informal Enforcement |
| 2025-05-13 | State Order Extension |
| 2025-03-27 | State Order Extension |
| 2025-02-10 | State Order Extension |
| 2025-01-31 | State Order Extension |
| 2025-01-22 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-25.
Selawik vs. Nearby Alaska Cities
How Selawik's water quality compares to similar cities in Alaska:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Selawik | C | 92 | 1 | 846 |
| Mountain Village | B | 20 | 1 | 850 |
| Sand Point | B | 21 | 1 | 830 |
| Emmonak | C | 74 | 1 | 820 |
Common Questions About Selawik Water
These are the most common questions residents search for about water quality in Selawik, Alaska:
Is Selawik water hard or soft? Water hardness varies by source. Selawik's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Selawik tap water? Selawik's water receives a grade of C (62/100). There are 24 health-based violations — consider filtration.
What is the best water filter for Selawik? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Selawik vs. Alaska Average
Understanding how Selawik compares to the broader Alaska average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Selawik.
ZIP Codes in Selawik
Selawik spans 1 ZIP code. The ZIP with the lowest water quality score is 99770. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.