Public water system · AK2130596
ActiveGustavus Water System
At a glance
Gustavus Water System (PWSID AK2130596) is an active non-transient non-community water system in Alaska. It reports serving 117 people through 11 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
117
Service connections
11
Primary source
GU
Groundwater under influence of surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Gustavus Water System compare with other water systems in Alaska?
By EPA's size categories, Gustavus Water System is a very small system (500 people or fewer). Across Alaska, the 1,322 active systems average 653 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Gustavus Water System is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Alaska has 227 active non-transient non-community water systems, 17% of the state's 1,322 active systems. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 28 Alaska systems (2.1%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Gustavus Water System?
EPA lists Gustavus Water System as owned by the federal government. 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.
Does Gustavus 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 June 2023. The violations listed here began between January 2017 and June 2023. By type: 12 monitoring and reporting. The contaminants or rules involved are Long Term 2 Enhanced Surface Water Treatment Rule, Carbon tetrachloride, o-Dichlorobenzene and Tetrachloroethylene. 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 |
|---|---|---|---|---|
| 2023-06-02 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Long Term 2 Enhanced Surface Water Treatment Rulecode 0800 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2017-01-01 | 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.
Gustavus Water System: frequently asked questions
Who runs Gustavus Water System?
Gustavus Water System (PWSID AK2130596) is a non-transient non-community water system owned by the federal government. It is regulated by the AK state drinking water program.
How many people does Gustavus Water System serve?
Gustavus Water System reports serving 117 people through 11 service connections in Alaska.
Where does Gustavus Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Gustavus 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 June 2023. 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 Gustavus 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 June 2023. For current results, consult EPA ECHO, or the AK state drinking water program.
Where can I find Gustavus Water System's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Gustavus Water System is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Alaska
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Moa Municipality of Anchorage | Anchorage Municipality | 221,351 | Community | Surface water |
| Golden Heart Utilities | Fairbanks North Star Borough | 78,324 | Community | Groundwater |
| City and Borough of Juneau | Juneau City and Borough | 38,526 | Community | Surface water |
| Jber-Elmendorf | Anchorage Municipality | 30,003 | Community | Purchased surface water |
| College Utilities Corporation | Fairbanks North Star Borough | 27,000 | Community | Purchased groundwater |
| Doyon Utilities Jber - Richardson | Anchorage Municipality | 20,284 | Community | 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, “Gustavus Water System, PWSID AK2130596, Alaska”, https://aquacensus.com/water-systems/alaska/gustavus-water-system-ak2130596 (data as of October 1, 2026).