Public water system · WY5600038
ActiveOsage Water District
At a glance
Osage Water District (PWSID WY5600038) is an active community water system in Weston County, Wyoming. It reports serving 200 people through 130 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
130
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Osage Water District compare with other water systems in Weston County?
By EPA's size categories, Osage Water District is a very small system (500 people or fewer). Weston County has 12 active public water systems, and Osage Water District is the 6th-largest of them by population served. Its population served is about 63% below the county average of 541 people per system, and accounts for 3.1% of the 6,496 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active community water system reports serving 6,703 people, so Osage Water District is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Wyoming has 332 active community water systems, 43% of the state's 775 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 585 Wyoming systems (75%) list groundwater as their primary source.
Who owns and regulates Osage Water District?
EPA lists Osage Water District as owned by a local government. The WY 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 12 active systems in Weston County (67%) are also owned by a local government.
Does Osage Water District have drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in June 2025. The violations listed here began between July 1976 and June 2025. By type: 9 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Chlorine (4 of them). EPA lists 7 as resolved, 2 as archived and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-06-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2024-09-03 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2024-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-08-09 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2022-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1976-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1976-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Archived |
All 10 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.
Osage Water District: frequently asked questions
Who runs Osage Water District?
Osage Water District (PWSID WY5600038) is a community water system owned by a local government. It is regulated by the WY state drinking water program.
How many people does Osage Water District serve?
Osage Water District reports serving 200 people through 130 service connections in Weston County, Wyoming.
Where does Osage Water District 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 Osage Water District have any drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in June 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 Osage Water District'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 10 violations for this system; 1 is health-based, and the most recent began in June 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the WY state drinking water program.
Where can I find Osage Water District's water quality report?
As a community water system, Osage Water District must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Weston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Newcastle, City of | Weston | 3,595 | Community | Groundwater |
| Upton, Town of | Weston | 1,100 | Community | Groundwater |
| Salt Creek Water District | Weston | 600 | Community | Groundwater |
| West End Water District | Weston | 225 | Community | Groundwater |
| Weston County Mallo Camp | Weston | 201 | Transient non-community | Groundwater |
| Cambria I&S District | Weston | 148 | Community | Purchased 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, “Osage Water District, PWSID WY5600038, Wyoming”, https://aquacensus.com/water-systems/wyoming/osage-water-district-wy5600038 (data as of October 1, 2026).