Public water system · AK2360785
ActiveNulato River Well
At a glance
Nulato River Well (PWSID AK2360785) is an active community water system in Yukon-Koyukuk Census Area County, Alaska. It reports serving 245 people through 70 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, one is health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
245
Service connections
70
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Nulato River Well compare with other water systems in Yukon-Koyukuk Census Area County?
By EPA's size categories, Nulato River Well is a very small system (500 people or fewer). Yukon-Koyukuk Census Area County has 34 active public water systems. Its population served is about 36% above the county average of 180 people per system, and accounts for 4% of the 6,119 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 Nulato River Well 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 Nulato River Well?
EPA lists Nulato River Well 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. 27 of the 34 active systems in Yukon-Koyukuk Census Area County (79%) are also Native American-owned.
Does Nulato River Well have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 2025. The violations listed here began between January 2023 and June 2025. By type: 7 monitoring and reporting, 2 public notice, recordkeeping or other, 1 monitoring, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule Revisions (2 of them). 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 |
|---|---|---|---|---|
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | 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.
Nulato River Well: frequently asked questions
Who runs Nulato River Well?
Nulato River Well (PWSID AK2360785) is a community water system Native American-owned. It is regulated by the AK state drinking water program.
How many people does Nulato River Well serve?
Nulato River Well reports serving 245 people through 70 service connections in Yukon-Koyukuk Census Area County, Alaska.
Where does Nulato River Well 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 Nulato River Well have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 2025. 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 Nulato River Well'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, one is health-based, and the most recent began in June 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the AK state drinking water program.
Where can I find Nulato River Well's water quality report?
As a community water system, Nulato River Well 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 Yukon-Koyukuk Census Area County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ft. Yukon Public Water System | Yukon-Koyukuk Census Area | 665 | Community | Groundwater under influence of surface water |
| Galena Wtp1 - City | Yukon-Koyukuk Census Area | 490 | Community | Groundwater |
| Nenana Municipal Water | Yukon-Koyukuk Census Area | 486 | Community | Groundwater |
| Mcgrath Water System | Yukon-Koyukuk Census Area | 341 | Community | Surface water |
| Huslia Public Water System | Yukon-Koyukuk Census Area | 323 | Community | Groundwater |
| Galena Wtp2 - Gila | Yukon-Koyukuk Census Area | 290 | 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, “Nulato River Well, PWSID AK2360785, Alaska”, https://aquacensus.com/water-systems/alaska/nulato-river-well-ak2360785 (data as of October 1, 2026).