Water Quality in Kwethluk, AK: 62 Violations - Grade B
Grade B · Score 70/100 · 1 water system · Updated 2026-07-18
Kwethluk's water is mostly safe. Minor violations exist but are primarily monitoring-related.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-07-18
Compliance records maintained by the EPA for Kwethluk, AK log 62 violations - accumulated reportable events drawn from every local utility in the SDWIS national tracking system.
Water Quality by ZIP Code in Kwethluk
Kwethluk is covered by a single ZIP code, so one water-quality profile applies citywide. See the contaminant data below.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 99621 | B | 70 | 62 | 19 | View report → |
Violation Trend
EPA violations recorded for water systems serving Kwethluk.
Water Quality Overview
Kwethluk, Alaska receives a water quality grade of B with an overall score of 70 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Kwethluk have accumulated 62 EPA violations, including 19 health-based violations. These violations are tracked across 1 ZIP code serving approximately 852 people.
What Grade B Means
A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Kwethluk's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.
Lead Levels
The average 90th percentile lead level across Kwethluk water systems is 0.0020 mg/L - within EPA limits. No ZIP codes exceed the EPA lead action level.
With 44% of homes built before 1986, Kwethluk 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.
Water Systems Serving Kwethluk
Kwethluk is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 852 people across 1 ZIP code.
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 Kwethluk. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Kwethluk
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 Kwethluk Water Systems
The following contaminants have been detected or caused violations across Kwethluk's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| E. coli | Microbiological | N/A | 23 | 1 | Yes |
| Chlorite | Disinfection Byproducts | 1 mg/L | 20 | 1 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 4 | 1 | Yes |
| Fecal Coliform | Microbiological | N/A | 2 | 1 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 2 | 1 | No |
| Total Organic Carbon | Disinfection Byproducts | N/A | 1 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 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 Kwethluk:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2024 | 7 | 7 |
| 2025 | 8 | 8 |
Violations have increased from 7 in 2024 to 8 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Kwethluk. Recent actions:
| Date | Action Type |
|---|---|
| 2025-12-09 | State Informal Enforcement |
| 2025-11-23 | State Order Extension |
| 2025-10-24 | State Informal Action |
| 2025-10-23 | State Informal Action |
| 2025-10-10 | State Informal Action |
| 2025-09-30 | State Order Extension |
| 2025-09-19 | State Informal Enforcement |
| 2025-09-02 | State Order Extension |
| 2025-08-01 | State Order Extension |
| 2025-06-03 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-12-09.
Kwethluk vs. Nearby Alaska Cities
How Kwethluk's water quality compares to similar cities in Alaska:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Kwethluk | B | 62 | 1 | 852 |
| Klawock | C | 26 | 1 | 854 |
| Copper Center | B | 9 | 5 | 832 |
| Mountain Village | B | 20 | 1 | 872 |
Common Questions About Kwethluk Water
These are the most common questions residents search for about water quality in Kwethluk, Alaska:
Is Kwethluk water hard or soft? Water hardness varies by source. Kwethluk's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Kwethluk tap water? Kwethluk's water receives a grade of B (70/100). There are 19 health-based violations - consider filtration.
What is the best water filter for Kwethluk? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Kwethluk vs. Alaska Average
Understanding how Kwethluk 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 Kwethluk.
ZIP Codes in Kwethluk
Kwethluk spans 1 ZIP code. The ZIP with the lowest water quality score is 99621. 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.
Frequently Asked Questions
Your Water is Safe - Here's How to Keep It That Way
Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.