Public water system · AK2121026
ActiveKnudson Cove Marina
At a glance
Knudson Cove Marina (PWSID AK2121026) is an active transient non-community water system in Ketchikan Gateway Borough County, Alaska. It reports serving 233 people through 7 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 January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
233
Service connections
7
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Knudson Cove Marina compare with other water systems in Ketchikan Gateway Borough County?
By EPA's size categories, Knudson Cove Marina is a very small system (500 people or fewer). Ketchikan Gateway Borough County has 22 active public water systems, and Knudson Cove Marina is the 5th-largest of them by population served. Its population served is about 58% below the county average of 560 people per system, and accounts for 1.9% of the 12,315 people reported by systems filed under the county. Across Alaska, the 1,322 active systems average 653 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Knudson Cove Marina is about 62% 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. Alaska has 689 active transient non-community water systems, 52% 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 Knudson Cove Marina?
EPA lists Knudson Cove Marina 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. 15 of the 22 active systems in Ketchikan Gateway Borough County (68%) are also privately owned.
Does Knudson Cove Marina 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 2025. The violations listed here began between June 2013 and January 2025. By type: 7 monitoring and 5 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (7 of them). EPA lists 11 as resolved and 1 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2022-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2021-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | 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.
Knudson Cove Marina: frequently asked questions
Who runs Knudson Cove Marina?
Knudson Cove Marina (PWSID AK2121026) is a transient non-community water system privately owned. It is regulated by the AK state drinking water program.
How many people does Knudson Cove Marina serve?
Knudson Cove Marina reports serving 233 people through 7 service connections in Ketchikan Gateway Borough County, Alaska.
Where does Knudson Cove Marina 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 Knudson Cove Marina 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 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 Knudson Cove Marina'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 2025. For current results, consult EPA ECHO, or the AK state drinking water program.
Where can I find Knudson Cove Marina's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Knudson Cove Marina 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 Ketchikan Gateway Borough County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ketchikan Public Utilities | Ketchikan Gateway Borough | 8,937 | Community | Surface water |
| South Tongass Water Utility | Ketchikan Gateway Borough | 975 | Community | Surface water |
| Saxman | Ketchikan Gateway Borough | 450 | Community | Surface water |
| Point Higgins Elementary School | Ketchikan Gateway Borough | 300 | Non-transient non-community | Groundwater |
| Vallenar View Mobile Home Park | Ketchikan Gateway Borough | 225 | Community | Surface water |
| Waterfall Resort | Ketchikan Gateway Borough | 168 | Transient non-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, “Knudson Cove Marina, PWSID AK2121026, Alaska”, https://aquacensus.com/water-systems/alaska/knudson-cove-marina-ak2121026 (data as of October 1, 2026).