Public water system · WA53NP350
ActiveHoh
At a glance
Hoh (PWSID WA53NP350) is an active transient non-community water system in Jefferson County, Washington. It reports serving 170 people through 16 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 5 violations for this system; none is health-based, and the most recent began in August 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
170
Service connections
16
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hoh compare with other water systems in Jefferson County?
By EPA's size categories, Hoh is a very small system (500 people or fewer). Jefferson County has 70 active public water systems. Its population served is well below the county average of 674 people per system, and accounts for 0.4% of the 47,151 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Hoh is about 18% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Washington has 1,913 active transient non-community water systems, 41% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates Hoh?
EPA lists Hoh as owned by the federal government. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 5 of the 70 active systems in Jefferson County (7.1%) are also owned by the federal government.
Does Hoh have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in August 2023. The violations listed here began between October 1991 and August 2023. By type: 4 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 4 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2023-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 1992-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 5 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.
Hoh: frequently asked questions
Who runs Hoh?
Hoh (PWSID WA53NP350) is a transient non-community water system owned by the federal government. It is regulated by the WA state drinking water program.
How many people does Hoh serve?
Hoh reports serving 170 people through 16 service connections in Jefferson County, Washington.
Where does Hoh 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 Hoh have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in August 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 Hoh'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. EPA's records list 5 violations for this system; none is health-based, and the most recent began in August 2023. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Hoh's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hoh is a 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Port Townsend City of | Jefferson | 17,053 | Community | Surface water |
| Quimper | Jefferson | 14,548 | Community | Groundwater |
| Olympic Water & Sewer Inc. | Jefferson | 3,086 | Community | Groundwater |
| Dosewallips State Park | Jefferson | 2,941 | Transient non-community | Groundwater |
| Cape George Colony Club Inc. | Jefferson | 1,022 | Community | Groundwater |
| Bywater Bay | Jefferson | 628 | 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, “Hoh, PWSID WA53NP350, Washington”, https://aquacensus.com/water-systems/washington/hoh-wa53np350 (data as of October 1, 2026).