Public water system · AK2320086
ActiveNsbu - Wainwright
At a glance
Nsbu - Wainwright (PWSID AK2320086) is an active community water system in North Slope Borough County, Alaska. It reports serving 600 people through 171 service connections. Its primary water source is surface water, and EPA lists it as Native American-owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
171
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Nsbu - Wainwright compare with other water systems in North Slope Borough County?
By EPA's size categories, Nsbu - Wainwright is a small system (501 to 3,300 people). North Slope Borough County has 79 active public water systems. Its population served is about 57% above the county average of 383 people per system, and accounts for 2% of the 30,227 people reported by systems filed under the county. Across Alaska, the 1,322 active systems average 653 people each. Nationally, the average active community water system reports serving 6,703 people, so Nsbu - Wainwright is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Alaska has 406 active community water systems, 31% of the state's 1,322 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 150 Alaska systems (11%) list surface water as their primary source.
Who owns and regulates Nsbu - Wainwright?
EPA lists Nsbu - Wainwright as Native American-owned. The AK state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 8 of the 79 active systems in North Slope Borough County (10%) are also Native American-owned.
Does Nsbu - Wainwright have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. The violations listed here began between April 2025 and February 2026. By type: 12 monitoring and reporting. The contaminants or rules involved are Surface Water Treatment Rule, Chlorine, 1,1,2-Trichloroethane and Carbon tetrachloride. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2026-02-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Nsbu - Wainwright: frequently asked questions
Who runs Nsbu - Wainwright?
Nsbu - Wainwright (PWSID AK2320086) is a community water system Native American-owned. It is regulated by the AK state drinking water program.
How many people does Nsbu - Wainwright serve?
Nsbu - Wainwright reports serving 600 people through 171 service connections in North Slope Borough County, Alaska.
Where does Nsbu - Wainwright get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Nsbu - Wainwright have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Nsbu - Wainwright's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the AK state drinking water program.
Where can I find Nsbu - Wainwright's water quality report?
As a community water system, Nsbu - Wainwright must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in North Slope Borough County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Barrow Utilities & Elec. Coop., Inc.. (Bu | North Slope Borough | 4,900 | Community | Surface water |
| Hilcorp Pboc | North Slope Borough | 1,200 | Non-transient non-community | Surface water |
| Conocophillips Kuparuk Operations Center | North Slope Borough | 1,198 | Non-transient non-community | Surface water |
| Nsbu - Point Hope | North Slope Borough | 881 | Community | Surface water |
| Worley Water Truck #30033 | North Slope Borough | 770 | Non-transient non-community | Purchased surface water |
| Worley Water Truck #30031 | North Slope Borough | 770 | Non-transient non-community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Nsbu - Wainwright, PWSID AK2320086, Alaska”, https://aquacensus.com/water-systems/alaska/nsbu-wainwright-ak2320086 (data as of October 1, 2026).