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Transient Non-Community Water System · PWS AK2261591

Bristol Bay Borough Dock

Naknek, Alaska 99633 - drinking water served from groundwater sources to 225 people, tracked in EPA SDWIS and UCMR5.

225
People served
47
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 47 drinking-water violations at Bristol Bay Borough Dock, 6% of them health-based - below the Alaska per-system average.

47
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
225
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bristol Bay Borough Dock

Bristol Bay Borough Dock is a local-owned transient non-community water system that delivers drinking water to 225 residents in Naknek, Alaska (Bristol Bay Borough County) through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 47 total violations for this system , of which 3 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 19 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 Revised Total Coliform Rule, recorded in 10 violations (MON). 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%).

Bristol Bay Borough Dock's 47 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
225
Total Violations
47
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Local
Connections
4
County
Bristol Bay Borough
School/Daycare
No
MCL Violations
0
Monitoring Violations
19
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 10 2025
Nitrate MR 5 2018
Coliform (TCR) MR 4 2014
Revised Total Coliform Rule TT 3 2018
Groundwater Rule Other 1 2024
Revised Total Coliform Rule Other 1 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 Bristol Bay Borough Dock.

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 AK2261591 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 Revised Total Coliform Rule MON 10 SDWIS / AK2261591 / 8000
2024 Groundwater Rule Other 1 SDWIS / AK2261591 / 0700
2018 Nitrate MR 5 SDWIS / AK2261591 / 1040
2018 Revised Total Coliform Rule TT 3 SDWIS / AK2261591 / 8000
2016 Revised Total Coliform Rule Other 1 SDWIS / AK2261591 / 8000
2014 Coliform (TCR) MR 4 SDWIS / AK2261591 / 3100

How Bristol Bay Borough Dock Compares

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

Metric Bristol Bay Borough Dock Alaska avg Federal benchmark
Total violations 47 201.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 225 650 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 Bristol Bay Borough Dock water safe to drink? ▼
Bristol Bay Borough Dock (PWS ID: AK2261591) has 47 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 225 people using Groundwater sources.
How many people does Bristol Bay Borough Dock serve? ▼
Bristol Bay Borough Dock serves 225 people in Naknek, Alaska. It is a Local-owned system using Groundwater water sources with 4 service connections.
What type of violations does Bristol Bay Borough Dock have? ▼
Bristol Bay Borough Dock has 47 total violations: 3 health-based violations (MCL exceedances or treatment failures), 19 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bristol Bay Borough Dock water? ▼
No PFAS testing data is available for Bristol Bay Borough Dock under the EPA's UCMR5 monitoring program.
What water source does Bristol Bay Borough Dock use? ▼
Bristol Bay Borough Dock uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.