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Community Water System · PWS AK2260260

Nondalton

Nondalton, Alaska 99640 - drinking water served from surface water sources to 205 people, tracked in EPA SDWIS and UCMR5.

205
People served
1,674
EPA violations
60
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,674 drinking-water violations at Nondalton, 4% of them health-based - above the Alaska per-system average.

1,674
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
205
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Nondalton

Nondalton is a native american-owned community water system that delivers drinking water to 205 residents in Nondalton, Alaska (Lake and Peninsula Borough County) through 72 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 1,674 total violations for this system , of which 60 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,398 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 220 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%).

Nondalton's 1,674 violations sit above 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
205
Total Violations
1,674
Health-Based Violations
60
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
72
County
Lake and Peninsula Borough
School/Daycare
No
MCL Violations
3
Monitoring Violations
1,398
Treatment Tech Violations
57

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 220 2016
Surface Water Treatment Rule MR 143 2025
Interim Enhanced Surface Water Treatment Rule MR 78 2025
Surface Water Treatment Rule TT 45 2025
Nitrate MR 35 2023
Chlorine MR 33 2025
Arsenic MR 30 2023
Revised Total Coliform Rule MON 30 2025
Methoxychlor MR 23 2022
Toxaphene MR 23 2022
2,4,5-TP MR 23 2022
BHC-GAMMA MR 23 2022
Endrin MR 23 2022
2,4-D MR 23 2022
Total Polychlorinated Biphenyls (PCB) MR 20 2022
Pentachlorophenol MR 20 2022
Heptachlor MR 20 2022
ETHYLENE DIBROMIDE MR 20 2022
Diquat MR 20 2022
Dinoseb MR 20 2022
Atrazine MR 20 2022
Simazine MR 20 2022
Picloram MR 20 2022
Heptachlor epoxide MR 20 2022
Chlordane MR 20 2022
Lead and Copper Rule MR 19 2025
Consumer Confidence Rule Other 18 2023
2,3,7,8-TCDD MR 15 2022
HEXACHLOROBENZENE MR 15 2022
LASSO MR 15 2022

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 Nondalton.

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 AK2260260 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
2025 Surface Water Treatment Rule MR 143 SDWIS / AK2260260 / 0200
2025 Interim Enhanced Surface Water Treatment Rule MR 78 SDWIS / AK2260260 / 0300
2025 Surface Water Treatment Rule TT 45 SDWIS / AK2260260 / 0200
2025 Chlorine MR 33 SDWIS / AK2260260 / 0999
2025 Revised Total Coliform Rule MON 30 SDWIS / AK2260260 / 8000
2025 Lead and Copper Rule MR 19 SDWIS / AK2260260 / 5000
2024 Interim Enhanced Surface Water Treatment Rule TT 12 SDWIS / AK2260260 / 0300
2023 Nitrate MR 35 SDWIS / AK2260260 / 1040
2023 Arsenic MR 30 SDWIS / AK2260260 / 1005
2023 Consumer Confidence Rule Other 18 SDWIS / AK2260260 / 7000
2023 p-Dichlorobenzene MR 12 SDWIS / AK2260260 / 2969
2023 1,1,1-Trichloroethane MR 12 SDWIS / AK2260260 / 2981
2023 Trichloroethylene MR 12 SDWIS / AK2260260 / 2984
2023 Benzene MR 12 SDWIS / AK2260260 / 2990
2023 1,2-Dichloroethane MR 12 SDWIS / AK2260260 / 2980

How Nondalton Compares

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

Metric Nondalton Alaska avg Federal benchmark
Total violations 1,674 201.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 60 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 205 650 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 Nondalton water safe to drink? ▼
Nondalton (PWS ID: AK2260260) has 1674 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 205 people using Surface Water sources.
How many people does Nondalton serve? ▼
Nondalton serves 205 people in Nondalton, Alaska. It is a Native American-owned system using Surface Water water sources with 72 service connections.
What type of violations does Nondalton have? ▼
Nondalton has 1,674 total violations: 60 health-based violations (MCL exceedances or treatment failures), 1,398 monitoring/reporting violations, and 57 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Nondalton water? ▼
No PFAS testing data is available for Nondalton under the EPA's UCMR5 monitoring program.
What water source does Nondalton use? ▼
Nondalton uses Surface Water 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.