Public water system · WY5600230
ActiveGreybull Heights Water Users
At a glance
Greybull Heights Water Users (PWSID WY5600230) is an active community water system in Big Horn County, Wyoming. It reports serving 84 people through 28 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 7 violations for this system; none is health-based, and the most recent began in February 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
84
Service connections
28
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Greybull Heights Water Users compare with other water systems in Big Horn County?
By EPA's size categories, Greybull Heights Water Users is a very small system (500 people or fewer). Big Horn County has 28 active public water systems. Its population served is well below the county average of 371 people per system, and accounts for 0.8% of the 10,387 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 Greybull Heights Water Users 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 36 Wyoming systems (4.6%) list purchased groundwater as their primary source.
Who owns and regulates Greybull Heights Water Users?
EPA lists Greybull Heights Water Users as privately owned. 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. 9 of the 28 active systems in Big Horn County (32%) are also privately owned.
Does Greybull Heights Water Users have drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in February 2018. The violations listed here began between November 1991 and February 2018. By type: 6 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2018-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2000-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2000-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 7 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.
Greybull Heights Water Users: frequently asked questions
Who runs Greybull Heights Water Users?
Greybull Heights Water Users (PWSID WY5600230) is a community water system privately owned. It is regulated by the WY state drinking water program.
How many people does Greybull Heights Water Users serve?
Greybull Heights Water Users reports serving 84 people through 28 service connections in Big Horn County, Wyoming.
Where does Greybull Heights Water Users get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Greybull Heights Water Users have any drinking water violations?
EPA's records list 7 violations for this system; none is health-based, and the most recent began in February 2018. 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 Greybull Heights Water Users' 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 7 violations for this system; none is health-based, and the most recent began in February 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the WY state drinking water program.
Where can I find Greybull Heights Water Users' water quality report?
As a community water system, Greybull Heights Water Users 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 Big Horn County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lovell, Town of | Big Horn | 2,250 | Community | Purchased surface water |
| Greybull, Town of | Big Horn | 2,080 | Community | Groundwater |
| Basin, Town of | Big Horn | 1,250 | Community | Purchased groundwater |
| South Big Horn County Jpb | Big Horn | 900 | Community | Groundwater |
| Cowley, Town of | Big Horn | 800 | Community | Groundwater |
| Byron, Town of | Big Horn | 561 | Community | Purchased 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, “Greybull Heights Water Users, PWSID WY5600230, Wyoming”, https://aquacensus.com/water-systems/wyoming/greybull-heights-water-users-wy5600230 (data as of October 1, 2026).