Public water system · AK2380531
ActiveTanacross Water System
At a glance
Tanacross Water System (PWSID AK2380531) is an active community water system in Southeast Fairbanks Census Area County, Alaska. It reports serving 108 people through 63 service connections. Its primary water source is groundwater, 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 January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
108
Service connections
63
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Tanacross Water System compare with other water systems in Southeast Fairbanks Census Area County?
By EPA's size categories, Tanacross Water System is a very small system (500 people or fewer). Southeast Fairbanks Census Area County has 64 active public water systems. Its population served is about 35% below the county average of 166 people per system, and accounts for 1% of the 10,592 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 Tanacross Water System 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,054 Alaska systems (80%) list groundwater as their primary source.
Who owns and regulates Tanacross Water System?
EPA lists Tanacross Water System 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. 4 of the 64 active systems in Southeast Fairbanks Census Area County (6.3%) are also Native American-owned.
Does Tanacross Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between February 2025 and January 2026. By type: 9 monitoring, 2 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (9 of them). EPA lists 9 as resolved and 3 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-08-22 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-05-09 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Tanacross Water System: frequently asked questions
Who runs Tanacross Water System?
Tanacross Water System (PWSID AK2380531) is a community water system Native American-owned. It is regulated by the AK state drinking water program.
How many people does Tanacross Water System serve?
Tanacross Water System reports serving 108 people through 63 service connections in Southeast Fairbanks Census Area County, Alaska.
Where does Tanacross Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Tanacross Water System 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 January 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 Tanacross Water System'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 January 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 Tanacross Water System's water quality report?
As a community water system, Tanacross Water System 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 Southeast Fairbanks Census Area County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ft. Greely - Main Post | Southeast Fairbanks Census Area | 1,257 | Community | Groundwater |
| Ft Wainwright / Du - Isb | Southeast Fairbanks Census Area | 957 | Transient non-community | Groundwater |
| Ft. Wainwright / Du - Bax | Southeast Fairbanks Census Area | 700 | Transient non-community | Groundwater |
| Tok Civic Center | Southeast Fairbanks Census Area | 500 | Transient non-community | Groundwater |
| Northern Star (Pogo) Lower Camp LLC | Southeast Fairbanks Census Area | 450 | Non-transient non-community | Groundwater under influence of surface water |
| Delta Junction Iga & Home Town Square | Southeast Fairbanks Census Area | 360 | Non-transient non-community | Groundwater |
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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, “Tanacross Water System, PWSID AK2380531, Alaska”, https://aquacensus.com/water-systems/alaska/tanacross-water-system-ak2380531 (data as of October 1, 2026).