Is Kwethluk, AK Tap Water Safe to Drink?
Graded D+, with 16 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
51/100
waterverge.com Kwethluk, AK — Water Quality Report
Kwethluk's drinking water received a grade of D+ (51 out of 100), indicating poor water quality. The city's 1 water system serves approximately 760 residents using surface water.
Lead levels were measured at 2.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 968 violations on record, including 64 health-based violations. 16 remain unresolved.
What to know about Kwethluk's water
Kwethluk ranks #32 out of 79 cities in Alaska for water quality, placing it mid-range in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Kwethluk may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 358 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Kwethluk, AK water safe to drink?
Kwethluk's drinking water has significant quality concerns based on EPA testing data. With a grade of D+ (51/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 760 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Kwethluk
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Kwethluk's water quality assessment. Grade: D+ (51/100).
Contaminants: CARBON, TOTAL, Surface Water Treatment Rule.
Contaminants: Surface Water Treatment Rule, CARBON, TOTAL, Interim Enhanced Surface Water Treatment Rule.
1 health-based. Contaminants: Revised Total Coliform Rule, Chlorine, CARBON, TOTAL.
Key contaminant findings
Based on the most recent EPA sampling data for Kwethluk's water supply.
Well within EPA limits.
Violation history
Kwethluk's water system has 968 total violations on record, including 64 health-based violations. 16 remain unresolved. 358 violations were issued in the last 5 years.
Where does Kwethluk's water come from?
Kwethluk's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 760 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Kwethluk residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Kwethluk's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 2.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Kwethluk compares by contaminant
Explore where Kwethluk ranks among all Alaska cities for specific contaminants.
Water source & infrastructure
Where Kwethluk's water comes from
Kwethluk's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by native american ownership and serves approximately 760 people through 1 water system.
Water systems serving Kwethluk
| System Name | PWSID | Population | Source |
|---|---|---|---|
| KWETHLUK NEW PIPED WATER SYSTEM | AK2272017 | 760 | SW |
How Kwethluk compares
Full Alaska rankings →Kwethluk's score of 51/100 is below the average of 61/100 among major Alaska cities. It outscores 4 of 10 nearby cities. 6 of 10 nearby cities score higher.
Nearby cities
View Alaska rankings →About Kwethluk, AK
Learn more about your water
Guides and resources related to Kwethluk's water quality findings.
Explore water quality across Bethel Census Area
Frequently asked questions
Is Kwethluk, AK tap water safe to drink?
Kwethluk's water quality earned a grade of D+ (51/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #32 out of 79 cities tested in Alaska.
What contaminants are in Kwethluk's water?
Lead was measured at 2.0 ppb (90th percentile). 968 violations are on record.
How is Kwethluk's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Kwethluk?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Kwethluk's water come from?
Kwethluk's water is sourced from Surface water. The city has 1 water system serving approximately 760 residents.
What health violations has Kwethluk's water system had?
Kwethluk has 64 health-based violations on record. The most recent violation was recorded in December 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 16 violations remain unresolved.
How does Kwethluk's water compare to other cities?
Kwethluk ranks #32 out of 79 cities in Alaska (better than 59% of state cities) and #12947 out of 15744 cities nationally (18th percentile). The grade of D+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Kwethluk's small water system affect quality?
Kwethluk's system serves approximately 760 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 968 violations on record.