Public water system · WY5601476
ActiveBentonite Performance Minerals - Colony
At a glance
Bentonite Performance Minerals - Colony (PWSID WY5601476) is an active non-transient non-community water system in Crook County, Wyoming. It reports serving 180 people through 5 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in May 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
180
Service connections
5
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Bentonite Performance Minerals - Colony compare with other water systems in Crook County?
By EPA's size categories, Bentonite Performance Minerals - Colony is a very small system (500 people or fewer). Crook County has 27 active public water systems. Its population served is about half of the county average of 328 people per system, and accounts for 2% of the 8,854 people reported by systems filed under the county. Across Wyoming, the 775 active systems average 838 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Bentonite Performance Minerals - Colony is about 58% below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Wyoming has 91 active non-transient non-community water systems, 12% 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 Bentonite Performance Minerals - Colony?
EPA lists Bentonite Performance Minerals - Colony 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. 16 of the 27 active systems in Crook County (59%) are also privately owned.
Does Bentonite Performance Minerals - Colony have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in May 2022. The violations listed here began between October 2001 and May 2022. By type: 8 monitoring and reporting and 4 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (8 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2022-05-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2009-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2007-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2007-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2002-04-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-10-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | 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.
Bentonite Performance Minerals - Colony: frequently asked questions
Who runs Bentonite Performance Minerals - Colony?
Bentonite Performance Minerals - Colony (PWSID WY5601476) is a non-transient non-community water system privately owned. It is regulated by the WY state drinking water program.
How many people does Bentonite Performance Minerals - Colony serve?
Bentonite Performance Minerals - Colony reports serving 180 people through 5 service connections in Crook County, Wyoming.
Where does Bentonite Performance Minerals - Colony 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 Bentonite Performance Minerals - Colony have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in May 2022. 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 Bentonite Performance Minerals - Colony'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, 4 are health-based, and the most recent began in May 2022. For current results, consult EPA ECHO, or the WY state drinking water program.
Where can I find Bentonite Performance Minerals - Colony's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Bentonite Performance Minerals - Colony is a non-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 Crook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Devils Tower National Monument | Crook | 3,071 | Transient non-community | Groundwater |
| Sundance, City of | Crook | 1,279 | Community | Groundwater |
| Moorcroft, Town of | Crook | 1,009 | Community | Groundwater |
| Devils Tower Koa-Campstool | Crook | 516 | Transient non-community | Groundwater |
| Pine Haven, Town of | Crook | 498 | Community | Groundwater |
| Hulett, Town of | Crook | 420 | 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, “Bentonite Performance Minerals - Colony, PWSID WY5601476, Wyoming”, https://aquacensus.com/water-systems/wyoming/bentonite-performance-minerals-colony-wy5601476 (data as of October 1, 2026).