Public water system · MT0003822
ActiveTerry Downtown Wua
At a glance
Terry Downtown Wua (PWSID MT0003822) is an active transient non-community water system in Prairie County, Montana. It reports serving 115 people through 9 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, none is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
115
Service connections
9
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Terry Downtown Wua compare with other water systems in Prairie County?
By EPA's size categories, Terry Downtown Wua is a very small system (500 people or fewer). Prairie County has 7 active public water systems, and Terry Downtown Wua is the 2nd-largest of them by population served. Its population served is about 61% above the county average of 72 people per system, and accounts for 23% of the 501 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Terry Downtown Wua is about 20% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Montana has 1,206 active transient non-community water systems, 51% of the state's 2,378 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,994 Montana systems (84%) list groundwater as their primary source.
Who owns and regulates Terry Downtown Wua?
EPA lists Terry Downtown Wua 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. 5 of the 7 active systems in Prairie County (71%) are also privately owned.
Does Terry Downtown Wua have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2025. The violations listed here began between January 2021 and January 2025. By type: 9 monitoring and 3 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (9 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Archived |
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2024-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2022-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | 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.
Terry Downtown Wua: frequently asked questions
Who runs Terry Downtown Wua?
Terry Downtown Wua (PWSID MT0003822) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Terry Downtown Wua serve?
Terry Downtown Wua reports serving 115 people through 9 service connections in Prairie County, Montana.
Where does Terry Downtown Wua 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 Terry Downtown Wua have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2025. 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 Terry Downtown Wua'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, none is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Terry Downtown Wua's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Terry Downtown Wua is a 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 Prairie County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Terry High School District No 5 | Prairie | 133 | Non-transient non-community | Groundwater |
| Prairie Community Hospital | Prairie | 80 | Non-transient non-community | Groundwater |
| Fallon Water Well Association | Prairie | 47 | Transient non-community | Groundwater |
| Bolin Elementary School Dist 5 | Prairie | 45 | Non-transient non-community | Groundwater |
| M & D Sprinklers | Prairie | 41 | Transient non-community | Groundwater |
| Diamond Motel and Campground LLC | Prairie | 40 | Transient non-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, “Terry Downtown Wua, PWSID MT0003822, Montana”, https://aquacensus.com/water-systems/montana/terry-downtown-wua-mt0003822 (data as of October 1, 2026).