Public water system · AK2263016
ActiveSwrsd Twin Hills School
At a glance
Swrsd Twin Hills School (PWSID AK2263016) is an active non-transient non-community water system in Dillingham Census Area County, Alaska. It reports serving 38 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
38
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Swrsd Twin Hills School compare with other water systems in Dillingham Census Area County?
By EPA's size categories, Swrsd Twin Hills School is a very small system (500 people or fewer). Dillingham Census Area County has 24 active public water systems. Its population served is well below the county average of 288 people per system, and accounts for 0.5% of the 6,913 people reported by systems filed under the county. 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 Swrsd Twin Hills School 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 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 Swrsd Twin Hills School?
EPA lists Swrsd Twin Hills School as privately 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 24 active systems in Dillingham Census Area County (33%) are also privately owned.
Does Swrsd Twin Hills School have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2024. The violations listed here began between April 2024 and April 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are p-Dichlorobenzene, Carbon tetrachloride, o-Dichlorobenzene and Xylenes, Total. 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 |
|---|---|---|---|---|
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | 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.
Swrsd Twin Hills School: frequently asked questions
Who runs Swrsd Twin Hills School?
Swrsd Twin Hills School (PWSID AK2263016) is a non-transient non-community water system privately owned. It is regulated by the AK state drinking water program.
How many people does Swrsd Twin Hills School serve?
Swrsd Twin Hills School reports serving 38 people through 3 service connections in Dillingham Census Area County, Alaska.
Where does Swrsd Twin Hills School 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 Swrsd Twin Hills School 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 April 2024. 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 Swrsd Twin Hills School'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 April 2024. For current results, consult EPA ECHO, or the AK state drinking water program.
Where can I find Swrsd Twin Hills School's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Swrsd Twin Hills School 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 Dillingham Census Area County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dillingham Water System | Dillingham Census Area | 2,419 | Community | Groundwater |
| Togiak Water System | Dillingham Census Area | 910 | Community | Groundwater |
| New Stuyahok Water System | Dillingham Census Area | 566 | Community | Groundwater |
| Bbahc - Kanakanak Hospital | Dillingham Census Area | 305 | Community | Groundwater |
| Silver Bay Seafoods - Wood River | Dillingham Census Area | 300 | Transient non-community | Groundwater |
| Manokotak Water System | Dillingham Census Area | 293 | 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, “Swrsd Twin Hills School, PWSID AK2263016, Alaska”, https://aquacensus.com/water-systems/alaska/swrsd-twin-hills-school-ak2263016 (data as of October 1, 2026).