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Community Water System · PWS AK2270215

Toksook Bay Water System

Bethel, Alaska 99559 - drinking water served from groundwater sources to 661 people, tracked in EPA SDWIS and UCMR5.

661
People served
569
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 569 drinking-water violations at Toksook Bay Water System - above the Alaska per-system average.

569
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
661
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Toksook Bay Water System

Toksook Bay Water System is a native american-owned community water system that delivers drinking water to 661 residents in Bethel, Alaska (Bethel Census Area County) through 124 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 569 total violations for this system , of which 1 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 407 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 14 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%).

Toksook Bay Water System's 569 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
661
Total Violations
569
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
124
County
Bethel Census Area
School/Daycare
No
MCL Violations
1
Monitoring Violations
407
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 14 2003
Endrin MR 13 2016
2,4,5-TP MR 13 2016
2,4-D MR 13 2016
Toxaphene MR 13 2016
BHC-GAMMA MR 13 2016
Methoxychlor MR 13 2016
Chlorine MR 13 2024
Picloram MR 11 2016
Diquat MR 11 2016
Dinoseb MR 11 2016
Total Polychlorinated Biphenyls (PCB) MR 11 2016
Heptachlor MR 11 2016
Chlordane MR 11 2016
ETHYLENE DIBROMIDE MR 11 2016
Simazine MR 11 2016
Atrazine MR 11 2016
Pentachlorophenol MR 11 2016
Heptachlor epoxide MR 11 2016
Nitrate MR 9 2023
Consumer Confidence Rule Other 8 2020
Dalapon MR 7 2016
Endothall MR 7 2016
Di(2-ethylhexyl) adipate MR 7 2016
OXAMYL MR 7 2016
Hexachlorocyclopentadiene MR 7 2016
Carbofuran MR 7 2016
2,3,7,8-TCDD MR 7 2016
HEXACHLOROBENZENE MR 7 2016
1,2-DIBROMO-3-CHLOROPROPANE MR 7 2016

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 Toksook Bay Water System.

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 AK2270215 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
2024 Chlorine MR 13 SDWIS / AK2270215 / 0999
2024 Revised Total Coliform Rule MON 3 SDWIS / AK2270215 / 8000
2024 Groundwater Rule Other 1 SDWIS / AK2270215 / 0700
2023 Nitrate MR 9 SDWIS / AK2270215 / 1040
2023 E. COLI MR 1 SDWIS / AK2270215 / 3014
2020 Consumer Confidence Rule Other 8 SDWIS / AK2270215 / 7000
2016 Endrin MR 13 SDWIS / AK2270215 / 2005
2016 2,4,5-TP MR 13 SDWIS / AK2270215 / 2110
2016 2,4-D MR 13 SDWIS / AK2270215 / 2105
2016 Toxaphene MR 13 SDWIS / AK2270215 / 2020
2016 BHC-GAMMA MR 13 SDWIS / AK2270215 / 2010
2016 Methoxychlor MR 13 SDWIS / AK2270215 / 2015
2016 Picloram MR 11 SDWIS / AK2270215 / 2040
2016 Diquat MR 11 SDWIS / AK2270215 / 2032
2016 Dinoseb MR 11 SDWIS / AK2270215 / 2041

How Toksook Bay Water System Compares

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

Metric Toksook Bay Water System Alaska avg Federal benchmark
Total violations 569 201.5 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 661 650 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 Toksook Bay Water System water safe to drink? ▼
Toksook Bay Water System (PWS ID: AK2270215) has 569 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 661 people using Groundwater sources.
How many people does Toksook Bay Water System serve? ▼
Toksook Bay Water System serves 661 people in Bethel, Alaska. It is a Native American-owned system using Groundwater water sources with 124 service connections.
What type of violations does Toksook Bay Water System have? ▼
Toksook Bay Water System has 569 total violations: 1 health-based violations (MCL exceedances or treatment failures), 407 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Toksook Bay Water System water? ▼
No PFAS testing data is available for Toksook Bay Water System under the EPA's UCMR5 monitoring program.
What water source does Toksook Bay Water System use? ▼
Toksook Bay Water System 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.