Public water system · WA53SP200
ActiveCurlew Lake State Park
At a glance
Curlew Lake State Park (PWSID WA53SP200) is an active transient non-community water system in Ferry County, Washington. It reports serving 779 people through 48 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
779
Service connections
48
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Curlew Lake State Park compare with other water systems in Ferry County?
By EPA's size categories, Curlew Lake State Park is a small system (501 to 3,300 people). Ferry County has 33 active public water systems, and Curlew Lake State Park is the 2nd-largest of them by population served. Its population served is about 4.3 times the county average of 182 people per system, and accounts for 13% 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 State Park is about 5.4 times 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 State Park?
EPA lists Curlew Lake State Park as owned by a state 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. 1 of the 33 active systems in Ferry County (3%) are also owned by a state government.
Does Curlew Lake State Park have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2020. The violations listed here began between April 2015 and November 2020. By type: 6 contaminant level above the legal limit, 5 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrate (7 of them). 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 |
|---|---|---|---|---|
| 2020-11-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2016-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2016-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | 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.
Curlew Lake State Park: frequently asked questions
Who runs Curlew Lake State Park?
Curlew Lake State Park (PWSID WA53SP200) is a transient non-community water system owned by a state government. It is regulated by the WA state drinking water program.
How many people does Curlew Lake State Park serve?
Curlew Lake State Park reports serving 779 people through 48 service connections in Ferry County, Washington.
Where does Curlew Lake State Park 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 State Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in November 2020. 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 State Park'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, 6 are health-based, and the most recent began in November 2020. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Curlew Lake State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Curlew Lake State Park 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 |
| 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 |
| Ferry County Fairgrounds | Ferry | 227 | Transient non-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 State Park, PWSID WA53SP200, Washington”, https://aquacensus.com/water-systems/washington/curlew-lake-state-park-wa53sp200 (data as of October 1, 2026).