WaterVerge

Is Gambell, AK Tap Water Safe to Drink?

Graded D — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓

669 residents served 1 water system PWSID: AK2340751
Overall Score
46.5 / 100
Violations
18 active
Last Updated
May 2026
Source
Ground water under influence
#54 of 79 in Alaska Top 88% nationally
Native American
Moderate data confidence
Reviewed by WaterVerge Editorial Team · Last updated May 2026
DGRADE
Water Quality Grade
46.5/100
waterverge.com
D 46.5/100

Gambell, AK — Water Quality Report

Gambell's drinking water received a grade of D (46.5 out of 100), indicating poor water quality. The city's 1 water system serves approximately 669 residents using ground water under influence.

Lead levels were measured at 0.7 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 559 violations on record, including 91 health-based violations. 18 remain unresolved.

Data last updated: May 2026 · Source: EPA SDWIS, UCMR 5
Analysis

What to know about Gambell's water

Gambell ranks #54 out of 79 cities in Alaska for water quality, placing it below average in the state.

Gambell relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.

As a small community water system, Gambell may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.

The system has seen 64 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.

Quality Breakdown

Water quality score

See methodology →
46.5 out of 100 Grade D
A: 90-100
B: 74-89
C: 60-73
F: <50
How is this calculated?
Violations
0/45
F
Historical violation record including health-based and monitoring violations.
Lead & Copper
16/20
B
Lead at 0.7 ppb (90th percentile).
Contaminants
17/20
B
PFAS + legacy contaminant analysis.
Compliance
10/10
A
Monitoring and reporting compliance with EPA regulations.
Source Risk
3.5/5
C
Water source: Ground water under influence.
Water Safety

Is Gambell, AK water safe to drink?

Concerns Identified

Gambell's drinking water has significant quality concerns based on EPA testing data. With a grade of D (46.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 669 residents using groundwater (wells).

18
Active Violations
0.7 ppb
Lead (90th %ile)

Recent water quality updates for Gambell

A timeline of significant water quality events, violations, and data updates.

Update
Water quality data updated

Latest EPA compliance and testing data incorporated into Gambell's water quality assessment. Grade: D (46.5/100).

Violation
4 drinking water violations recorded

Contaminants: TTHM, Total Haloacetic Acids (HAA5), Interim Enhanced Surface Water Treatment Rule.

Violation
3 drinking water violations recorded

Contaminants: Chlorine, Revised Total Coliform Rule, Surface Water Treatment Rule.

Violation
2 drinking water violations recorded

Contaminants: Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule.

Key contaminant findings

Based on the most recent EPA sampling data for Gambell's water supply.

Lead Within Limits
Detected: 0.7 ppb Limit: 15 ppb (EPA Action Level)

Well within EPA limits.

Copper Exceeds Limit
Detected: 2.15 mg/L Limit: 1.3 mg/L (EPA Action Level)

Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.

Violation history

Gambell's water system has 559 total violations on record, including 91 health-based violations. 18 remain unresolved. 64 violations were issued in the last 5 years.

MRMONOtherTTMCL
Most recent violations:
Oct 2025 TTHM Resolved
Oct 2025 Total Haloacetic Acids (HAA5) Resolved
Oct 2025 Interim Enhanced Surface Water Treatment Rule Resolved
Oct 2025 Surface Water Treatment Rule Resolved
Jun 2025 Chlorine Resolved

Where does Gambell's water come from?

Gambell's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 669 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.

What Gambell residents can do

Install a water filter

Recommended: NSF-certified water filter. This addresses the specific contaminants found in Gambell's water.

Request your utility's CCR

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.

Contaminant Alerts

Top contaminants to know

View all ↓
Lead (90th percentile)
Inorganic / Heavy Metal
Safe
0.7 ppb
EPA Action Level: 15 ppb · 5% of limit
Safe Level
Copper (90th percentile)
Inorganic
Over Limit
2.15 mg/L
EPA Action Level: 1.3 mg/L · +20% over limit
Exceeds Limit
Compliance Record

Violation summary

559
Total violations
91
Health-based
18
Active / unresolved
Oct 2025
Most recent violation
Compliance Record

Violations & advisories

559 Total
18 Active
91 Health-based
541 Resolved
8 SNC
Violations by category
Surface Water Treatment Rule
171
Synthetic Organic Chemicals
148
Volatile Organic Chemicals
55
Stage 1 Disinfectants and Disinfection Byproducts Rule
53
Interim and Long Term 1 Enhanced Surface Water Treatment Rule
47
Jan 2025 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Oct 2023 Active
Consumer Confidence Rule
Other Violation 0
Oct 2021 Active
Consumer Confidence Rule
Other Violation 0
Oct 2019 Active
Consumer Confidence Rule
Other Violation 0
Jul 2019 Active
Consumer Confidence Rule
Other Violation 0
Jan 2017 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2016 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2015 Active
Lead and Copper Rule
Monitoring & Reporting
Monitoring & Reporting 0
Sep 2014 Active
Ground Water Rule
Other Violation 0
Jul 2012 Active
Consumer Confidence Rule
Other Violation 0
Jul 2010 Active
Stage 2 Disinfectants and Disinfection Byproducts Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jul 2008 Active
Long Term 2 Enhanced Surface Water Treatment Rule
Monitoring & Reporting
Monitoring & Reporting 0
Jan 2006 Active
Lead and Copper Rule
Treatment Technique
Health-Based Health 0
Jul 2005 Active
Consumer Confidence Rule
Other Violation 0
Jul 2004 Active
Consumer Confidence Rule
Other Violation 0
Jul 2003 Active
Consumer Confidence Rule
Other Violation 0
Jul 2002 Active
Lead and Copper Rule
Treatment Technique
Health-Based Health 0
Active
Compliance Violation
Monitoring 0
Oct 2025 Resolved
TTHM
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2025
Oct 2025 Resolved
Total Haloacetic Acids (HAA5)
Monitoring & Reporting
Monitoring & Reporting Resolved Dec 2025
Showing 20 of 559 violations

Recommended water filters

Based on contaminants detected in Gambell's water supply, we recommend the following filter types.

🔧
For Copper
Reverse Osmosis or KDF Filter
Copper exceeds the EPA action level of 1.3 mg/L

Full contaminants report

Contaminant Detected Level EPA Limit Unit Category Status
Lead (90th percentile) 0.7 15 ppb Inorganic Safe
Copper (90th percentile) 2.15 1.3 mg/L Inorganic Over Limit
Data source: EPA SDWIS, UCMR 5, local utility CCR.

Lead level trend (90th percentile)

EPA action level: 15 ppb
Lead has decreased by 12.3 ppb from 1994 (13.0 ppb) to 2023 (0.7 ppb).

Copper level trend (90th percentile)

EPA action level: 1.3 mg/L
Copper has increased by 0.720 mg/L from 1995 (1.430 mg/L) to 2020 (2.150 mg/L).
Infrastructure

Water source & infrastructure

Primary Source
Ground Water Under Influence
Operator
Native American
Population Served
669
Water Systems
1
Water Source

Where Gambell's water comes from

Ground Water Under Influence

Gambell's drinking water is drawn from underground aquifers through wells.

Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.

Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.

The system is operated by native american ownership and serves approximately 669 people through 1 water system.

Infrastructure

Water systems serving Gambell

System Name PWSID Population Source
GAMBELL WATER SYSTEM AK2340751 669 GU
Regional Comparison

How Gambell compares

Full Alaska rankings →

Gambell's score of 46.5/100 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.

Gambell (this city)
46.5
Anchorage
38.5
Fairbanks
38.4
Juneau
65.4
Wasilla
42.5
Alaska avg
61
City Profile

About Gambell, AK

Economic Profile
$39,375
Median Income
$77,662
Median Home Value
$938/mo
Median Rent
31.5%
Unemployment
Community
25.8
Median Age
16
People / sq mi
4.9%
College Educated
83.9%
Homeownership
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Frequently asked questions

Is Gambell, AK tap water safe to drink?

Gambell's water quality earned a grade of D (46.5/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #54 out of 79 cities tested in Alaska.

What contaminants are in Gambell's water?

Lead was measured at 0.7 ppb (90th percentile). 559 violations are on record.

How is Gambell'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 Gambell?

Based on current data, basic filtration should suffice for additional peace of mind.

Where does Gambell's water come from?

Gambell's water is sourced from Ground water under influence. The city has 1 water system serving approximately 669 residents.

What health violations has Gambell's water system had?

Gambell has 91 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 18 violations remain unresolved.

Is Gambell's groundwater at risk of contamination?

Gambell uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 559 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.

How does Gambell's water compare to other cities?

Gambell ranks #54 out of 79 cities in Alaska (better than 32% of state cities) and #13871 out of 15744 cities nationally (12th percentile). The grade of D reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Does Gambell's small water system affect quality?

Gambell's system serves approximately 669 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 559 violations on record.