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Community Water System · PWS AK2350235

Nsbu - Anaktuvuk Pass

Anchorage, Alaska 99518 - drinking water served from groundwater sources to 350 people, tracked in EPA SDWIS and UCMR5.

350
People served
199
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 199 drinking-water violations at Nsbu - Anaktuvuk Pass, 1% of them health-based - below the Alaska per-system average.

199
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
350
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Nsbu - Anaktuvuk Pass

Nsbu - Anaktuvuk Pass is a native american-owned community water system that delivers drinking water to 350 residents in Anchorage, Alaska (North Slope Borough County) through 105 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 199 total violations for this system , of which 1 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 116 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Chlorine, recorded in 10 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Alaska, EPA tracks 1,326 public water systems serving 862,218 people, with 267,144 cumulative violations and 13,963 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 201.5 violations. Statewide, 10 of 30 UCMR5-tested systems have reported PFAS detections (33.3%).

Nsbu - Anaktuvuk Pass's 199 violations sit below the Alaska average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
350
Total Violations
199
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
105
County
North Slope Borough
School/Daycare
No
MCL Violations
1
Monitoring Violations
116
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 10 2007
DICHLOROMETHANE MR 5 2000
1,1,2-Trichloroethane MR 5 2000
Xylenes, Total MR 5 2000
1,1,1-Trichloroethane MR 5 2000
o-Dichlorobenzene MR 5 2000
Tetrachloroethylene MR 5 2000
Ethylbenzene MR 5 2000
1,2-Dichloropropane MR 5 2000
trans-1,2-Dichloroethylene MR 5 2000
Benzene MR 5 2000
1,2-Dichloroethane MR 5 2000
CHLOROBENZENE MR 5 2000
1,1-Dichloroethylene MR 5 2000
Toluene MR 5 2000
Styrene MR 5 2000
cis-1,2-Dichloroethylene MR 5 2000
Trichloroethylene MR 5 2000
1,2,4-Trichlorobenzene MR 5 2000
p-Dichlorobenzene MR 5 2000
Carbon tetrachloride MR 5 2000
Coliform (TCR) MR 4 2007
Consumer Confidence Rule Other 2 2019
Revised Total Coliform Rule MCL 1 2017
Lead and Copper Rule MR 1 2001
Nitrate MR 1 2014

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Nsbu - Anaktuvuk Pass.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID AK2350235 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Alaska Drinking Water Authority

Alaska's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find AK regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2019 Consumer Confidence Rule Other 2 SDWIS / AK2350235 / 7000
2017 Revised Total Coliform Rule MCL 1 SDWIS / AK2350235 / 8000
2014 Nitrate MR 1 SDWIS / AK2350235 / 1040
2007 Chlorine MR 10 SDWIS / AK2350235 / 0999
2007 Coliform (TCR) MR 4 SDWIS / AK2350235 / 3100
2001 Lead and Copper Rule MR 1 SDWIS / AK2350235 / 5000
2000 DICHLOROMETHANE MR 5 SDWIS / AK2350235 / 2964
2000 1,1,2-Trichloroethane MR 5 SDWIS / AK2350235 / 2985
2000 Xylenes, Total MR 5 SDWIS / AK2350235 / 2955
2000 1,1,1-Trichloroethane MR 5 SDWIS / AK2350235 / 2981
2000 o-Dichlorobenzene MR 5 SDWIS / AK2350235 / 2968
2000 Tetrachloroethylene MR 5 SDWIS / AK2350235 / 2987
2000 Ethylbenzene MR 5 SDWIS / AK2350235 / 2992
2000 1,2-Dichloropropane MR 5 SDWIS / AK2350235 / 2983
2000 trans-1,2-Dichloroethylene MR 5 SDWIS / AK2350235 / 2979

How Nsbu - Anaktuvuk Pass Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Nsbu - Anaktuvuk Pass Alaska avg Federal benchmark
Total violations 199 201.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 10.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 33.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 350 650 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,326 regulated public water systems in Alaska.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Nsbu - Anaktuvuk Pass water safe to drink? ▼
Nsbu - Anaktuvuk Pass (PWS ID: AK2350235) has 199 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 350 people using Groundwater sources.
How many people does Nsbu - Anaktuvuk Pass serve? ▼
Nsbu - Anaktuvuk Pass serves 350 people in Anchorage, Alaska. It is a Native American-owned system using Groundwater water sources with 105 service connections.
What type of violations does Nsbu - Anaktuvuk Pass have? ▼
Nsbu - Anaktuvuk Pass has 199 total violations: 1 health-based violations (MCL exceedances or treatment failures), 116 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Nsbu - Anaktuvuk Pass water? ▼
No PFAS testing data is available for Nsbu - Anaktuvuk Pass under the EPA's UCMR5 monitoring program.
What water source does Nsbu - Anaktuvuk Pass use? ▼
Nsbu - Anaktuvuk Pass uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.