Public water system · MT0004353
ActiveEthridge County Water District
At a glance
Ethridge County Water District (PWSID MT0004353) is an active community water system in Toole County, Montana. It reports serving 70 people through 30 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
30
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Ethridge County Water District compare with other water systems in Toole County?
By EPA's size categories, Ethridge County Water District is a very small system (500 people or fewer). Toole County has 18 active public water systems. Its population served is well below the county average of 361 people per system, and accounts for 1.1% of the 6,498 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active community water system reports serving 6,703 people, so Ethridge County 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. Montana has 853 active community water systems, 36% of the state's 2,378 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 104 Montana systems (4.4%) list purchased groundwater as their primary source.
Who owns and regulates Ethridge County Water District?
EPA lists Ethridge County Water District as privately owned. The MT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 10 of the 18 active systems in Toole County (56%) are also privately owned.
Does Ethridge County Water District have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 2024. The violations listed here began between July 2003 and December 2024. By type: 6 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 6 as resolved. 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 |
|---|---|---|---|---|
| 2024-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2003-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 6 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.
Ethridge County Water District: frequently asked questions
Who runs Ethridge County Water District?
Ethridge County Water District (PWSID MT0004353) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Ethridge County Water District serve?
Ethridge County Water District reports serving 70 people through 30 service connections in Toole County, Montana.
Where does Ethridge County Water District 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 Ethridge County Water District have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 2024. 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 Ethridge County 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 6 violations for this system; none is health-based, and the most recent began in December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Ethridge County Water District's water quality report?
As a community water system, Ethridge County 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 Toole County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Shelby City of | Toole | 3,970 | Community | Groundwater |
| Sunburst Town of | Toole | 459 | Community | Groundwater |
| Oilmont County Water District | Toole | 300 | Community | Groundwater |
| Ncmrwa North Shelby | Toole | 300 | Community | Purchased groundwater |
| Kevin Town of | Toole | 290 | Community | Groundwater |
| Galata County Water District | Toole | 200 | 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, “Ethridge County Water District, PWSID MT0004353, Montana”, https://aquacensus.com/water-systems/montana/ethridge-county-water-district-mt0004353 (data as of October 1, 2026).