Public water system · WY5600137
ActiveDouglas, City of
At a glance
City of Douglas (PWSID WY5600137) is an active community water system in Converse County, Wyoming. It reports serving 6,400 people through 2,702 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2002.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,400
Service connections
2,702
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Douglas compare with other water systems in Converse County?
By EPA's size categories, City of Douglas is a medium system (3,301 to 10,000 people). Converse County has 19 active public water systems, and City of Douglas is the largest of them by population served. Its population served is about 8.5 times the county average of 756 people per system, and accounts for 45% of the 14,359 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 City of Douglas is roughly in line with 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 50 Wyoming systems (6.5%) list surface water as their primary source.
Who owns and regulates City of Douglas?
EPA lists City of Douglas 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. 5 of the 19 active systems in Converse County (26%) are also owned by a local government.
Does City of Douglas have drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2002. The violations listed here began between July 1976 and January 2002. By type: 8 monitoring and reporting and 2 required treatment not met. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 8 as archived and 2 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 |
|---|---|---|---|---|
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1994-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1994-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1994-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
| 1993-12-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Archived |
| 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.
City of Douglas: frequently asked questions
Who runs City of Douglas?
City of Douglas (PWSID WY5600137) is a community water system owned by a local government. It is regulated by the WY state drinking water program.
How many people does City of Douglas serve?
City of Douglas reports serving 6,400 people through 2,702 service connections in Converse County, Wyoming.
Where does City of Douglas get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does City of Douglas have any drinking water violations?
EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in January 2002. 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 City of Douglas' 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; 2 are health-based, and the most recent began in January 2002. For current results, consult the system's annual water quality report, EPA ECHO, or the WY state drinking water program.
Where can I find City of Douglas' water quality report?
As a community water system, City of Douglas 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 Converse County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Glenrock, Town of | Converse | 2,466 | Community | Groundwater |
| Wydot-Orin Junction Rest Area | Converse | 1,900 | Transient non-community | Groundwater |
| Navajo Trans Engr Co., LLC (Antelope) | Converse | 550 | Non-transient non-community | Groundwater |
| Broken Wheel Truck Stop | Converse | 540 | Non-transient non-community | Groundwater |
| Lone Tree Village MHP | Converse | 475 | Community | Purchased surface water |
| Rolling Hills, Town of | Converse | 450 | 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, “Douglas, City of, PWSID WY5600137, Wyoming”, https://aquacensus.com/water-systems/wyoming/douglas-city-of-wy5600137 (data as of October 1, 2026).