Public water system · WA5351527
ActiveCurlew Lake Heights Water System
At a glance
Curlew Lake Heights Water System (PWSID WA5351527) is an active transient non-community water system in Ferry County, Washington. It reports serving 22 people through 15 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
22
Service connections
15
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Curlew Lake Heights Water System compare with other water systems in Ferry County?
By EPA's size categories, Curlew Lake Heights Water System is a very small system (500 people or fewer). Ferry County has 33 active public water systems. Its population served is well below the county average of 182 people per system, and accounts for 0.4% of the 5,998 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 Curlew Lake Heights Water System is well below 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 Curlew Lake Heights Water System?
EPA lists Curlew Lake Heights Water System as privately owned. 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. 24 of the 33 active systems in Ferry County (73%) are also privately owned.
Does Curlew Lake Heights Water System have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2025. The violations listed here began between June 2010 and January 2025. By type: 5 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (5 of them). EPA lists 5 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 |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2010-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 6 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.
Curlew Lake Heights Water System: frequently asked questions
Who runs Curlew Lake Heights Water System?
Curlew Lake Heights Water System (PWSID WA5351527) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Curlew Lake Heights Water System serve?
Curlew Lake Heights Water System reports serving 22 people through 15 service connections in Ferry County, Washington.
Where does Curlew Lake Heights Water System 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 Curlew Lake Heights Water System have any drinking water violations?
EPA's records list 6 violations for this system; 1 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 Curlew Lake Heights 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. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Curlew Lake Heights Water System's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Curlew Lake Heights Water System 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 Ferry County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Republic City of | Ferry | 1,673 | Community | Groundwater |
| Curlew Lake State Park | Ferry | 779 | Transient non-community | Groundwater |
| Inchelium Water District | Ferry | 540 | Community | Groundwater |
| Hartmans Log Cabin Resort Inc. | Ferry | 397 | Transient non-community | Groundwater |
| Curlew Conservation Center | Ferry | 349 | Community | Groundwater |
| Curlew Water & Sewer District | Ferry | 316 | 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, “Curlew Lake Heights Water System, PWSID WA5351527, Washington”, https://aquacensus.com/water-systems/washington/curlew-lake-heights-water-system-wa5351527 (data as of October 1, 2026).