Public water system · MT0004839
ActiveDry Redwater Regional Water Authority
At a glance
Dry Redwater Regional Water Authority (PWSID MT0004839) is an active community water system in McCone County, Montana. It reports serving 365 people through 88 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in May 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
365
Service connections
88
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Dry Redwater Regional Water Authority compare with other water systems in McCone County?
By EPA's size categories, Dry Redwater Regional Water Authority is a very small system (500 people or fewer). McCone County has 6 active public water systems, and Dry Redwater Regional Water Authority is the 2nd-largest of them by population served. Its population served is about 89% above the county average of 194 people per system, and accounts for 31% of the 1,161 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 Dry Redwater Regional Water Authority 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 Dry Redwater Regional Water Authority?
EPA lists Dry Redwater Regional Water Authority as owned by a local government. 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. 2 of the 6 active systems in McCone County (33%) are also owned by a local government.
Does Dry Redwater Regional Water Authority have drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in May 2024. The violations listed here began between November 2014 and May 2024. By type: 3 monitoring, 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 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 |
|---|---|---|---|---|
| 2024-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | 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.
Dry Redwater Regional Water Authority: frequently asked questions
Who runs Dry Redwater Regional Water Authority?
Dry Redwater Regional Water Authority (PWSID MT0004839) is a community water system owned by a local government. It is regulated by the MT state drinking water program.
How many people does Dry Redwater Regional Water Authority serve?
Dry Redwater Regional Water Authority reports serving 365 people through 88 service connections in McCone County, Montana.
Where does Dry Redwater Regional Water Authority 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 Dry Redwater Regional Water Authority have any drinking water violations?
EPA's records list 6 violations for this system; 2 are health-based, and the most recent began in May 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 Dry Redwater Regional Water Authority'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; 2 are health-based, and the most recent began in May 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 Dry Redwater Regional Water Authority's water quality report?
As a community water system, Dry Redwater Regional Water Authority 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 McCone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Circle Town of | McCone | 644 | Community | Groundwater |
| Brockway Supper Club | McCone | 50 | Transient non-community | Groundwater |
| Rock Creek Marina LLC | McCone | 50 | Transient non-community | Surface water |
| Harrys Nite Club | McCone | 27 | Transient non-community | Groundwater |
| Circle Country Market | McCone | 25 | Transient non-community | Purchased 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, “Dry Redwater Regional Water Authority, PWSID MT0004839, Montana”, https://aquacensus.com/water-systems/montana/dry-redwater-regional-water-authority-mt0004839 (data as of October 1, 2026).