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Community Water System · PWS AK2241020

Nikishka Bay

Anchorage, Alaska 99523 - drinking water served from groundwater sources to 470 people, tracked in EPA SDWIS and UCMR5.

470
People served
669
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 669 drinking-water violations at Nikishka Bay, 1% of them health-based - above the Alaska per-system average.

669
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
470
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Nikishka Bay

Nikishka Bay is a private-owned community water system that delivers drinking water to 470 residents in Anchorage, Alaska (Kenai Peninsula Borough County) through 109 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 669 total violations for this system , of which 8 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 509 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 46 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%).

Nikishka Bay's 669 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
470
Total Violations
669
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
109
County
Kenai Peninsula Borough
School/Daycare
No
MCL Violations
6
Monitoring Violations
509
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 46 2014
Xylenes, Total MR 17 2005
p-Dichlorobenzene MR 17 2005
1,1,1-Trichloroethane MR 17 2005
o-Dichlorobenzene MR 17 2005
Carbon tetrachloride MR 17 2005
Toluene MR 17 2005
Tetrachloroethylene MR 17 2005
Ethylbenzene MR 17 2005
1,2-Dichloropropane MR 17 2005
cis-1,2-Dichloroethylene MR 17 2005
Trichloroethylene MR 17 2005
Benzene MR 17 2005
1,2-Dichloroethane MR 17 2005
Styrene MR 17 2005
1,1-Dichloroethylene MR 17 2005
CHLOROBENZENE MR 17 2005
trans-1,2-Dichloroethylene MR 17 2005
1,2,4-Trichlorobenzene MR 16 2005
DICHLOROMETHANE MR 16 2005
1,1,2-Trichloroethane MR 16 2005
Consumer Confidence Rule Other 11 2024
Nitrate MR 9 2003
Vinyl chloride MR 8 2005
Lead and Copper Rule MR 7 2005
Tetrachloroethylene MCL 4 2008
Simazine MR 4 1995
Diquat MR 4 1995
Endrin MR 4 1995
Total Polychlorinated Biphenyls (PCB) MR 4 1995

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 Nikishka Bay.

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 AK2241020 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 Consumer Confidence Rule Other 11 SDWIS / AK2241020 / 7000
2022 Groundwater Rule TT 2 SDWIS / AK2241020 / 0700
2020 Revised Total Coliform Rule MON 1 SDWIS / AK2241020 / 8000
2014 Coliform (TCR) MR 46 SDWIS / AK2241020 / 3100
2008 Tetrachloroethylene MCL 4 SDWIS / AK2241020 / 2987
2008 Coliform (TCR) MCL 2 SDWIS / AK2241020 / 3100
2005 Xylenes, Total MR 17 SDWIS / AK2241020 / 2955
2005 p-Dichlorobenzene MR 17 SDWIS / AK2241020 / 2969
2005 1,1,1-Trichloroethane MR 17 SDWIS / AK2241020 / 2981
2005 o-Dichlorobenzene MR 17 SDWIS / AK2241020 / 2968
2005 Carbon tetrachloride MR 17 SDWIS / AK2241020 / 2982
2005 Toluene MR 17 SDWIS / AK2241020 / 2991
2005 Tetrachloroethylene MR 17 SDWIS / AK2241020 / 2987
2005 Ethylbenzene MR 17 SDWIS / AK2241020 / 2992
2005 1,2-Dichloropropane MR 17 SDWIS / AK2241020 / 2983

How Nikishka Bay Compares

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

Metric Nikishka Bay Alaska avg Federal benchmark
Total violations 669 201.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 470 650 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 Nikishka Bay water safe to drink? ▼
Nikishka Bay (PWS ID: AK2241020) has 669 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 470 people using Groundwater sources.
How many people does Nikishka Bay serve? ▼
Nikishka Bay serves 470 people in Anchorage, Alaska. It is a Private-owned system using Groundwater water sources with 109 service connections.
What type of violations does Nikishka Bay have? ▼
Nikishka Bay has 669 total violations: 8 health-based violations (MCL exceedances or treatment failures), 509 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Nikishka Bay water? ▼
No PFAS testing data is available for Nikishka Bay under the EPA's UCMR5 monitoring program.
What water source does Nikishka Bay use? ▼
Nikishka Bay 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.