Public water system · ID4200053
ActiveTrinity Estates Water Users Assn
At a glance
Trinity Estates Water Users Assn (PWSID ID4200053) is an active community water system in Elmore County, Idaho. It reports serving 250 people through 58 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, one is health-based, and the most recent began in June 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
58
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Trinity Estates Water Users Assn compare with other water systems in Elmore County?
By EPA's size categories, Trinity Estates Water Users Assn is a very small system (500 people or fewer). Elmore County has 44 active public water systems, and Trinity Estates Water Users Assn is the 4th-largest of them by population served. Its population served is about 59% below the county average of 607 people per system, and accounts for 0.9% of the 26,726 people reported by systems filed under the county. Across Idaho, the 1,961 active systems average 899 people each. Nationally, the average active community water system reports serving 6,703 people, so Trinity Estates Water Users Assn 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. Idaho has 765 active community water systems, 39% of the state's 1,961 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,861 Idaho systems (95%) list groundwater as their primary source.
Who owns and regulates Trinity Estates Water Users Assn?
EPA lists Trinity Estates Water Users Assn as privately owned. The ID state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 39 of the 44 active systems in Elmore County (89%) are also privately owned.
Does Trinity Estates Water Users Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 2020. The violations listed here began between April 2014 and June 2020. By type: 10 monitoring and reporting, 1 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Chlorine (5 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2020-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2019-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2017-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2017-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2015-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2015-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Trinity Estates Water Users Assn: frequently asked questions
Who runs Trinity Estates Water Users Assn?
Trinity Estates Water Users Assn (PWSID ID4200053) is a community water system privately owned. It is regulated by the ID state drinking water program.
How many people does Trinity Estates Water Users Assn serve?
Trinity Estates Water Users Assn reports serving 250 people through 58 service connections in Elmore County, Idaho.
Where does Trinity Estates Water Users Assn 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 Trinity Estates Water Users Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in June 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 Trinity Estates Water Users Assn'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, one is health-based, and the most recent began in June 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the ID state drinking water program.
Where can I find Trinity Estates Water Users Assn's water quality report?
As a community water system, Trinity Estates Water Users Assn 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 Elmore County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mountain Home, City of | Elmore | 14,651 | Community | Groundwater |
| Mountain Home Air Force Base | Elmore | 7,500 | Community | Groundwater |
| Glenns Ferry City of | Elmore | 1,282 | Community | Surface water |
| Mellen Subd Water Dist | Elmore | 250 | Community | Purchased groundwater |
| Canyon Creek Mobile Home Park | Elmore | 243 | Community | Groundwater |
| Summerwind Water Users | Elmore | 192 | Community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Trinity Estates Water Users Assn, PWSID ID4200053, Idaho”, https://aquacensus.com/water-systems/idaho/trinity-estates-water-users-assn-id4200053 (data as of October 1, 2026).