Public water system · MT0004869
ActivePerrys Water Service
At a glance
Perrys Water Service (PWSID MT0004869) is an active community water system in Blaine County, Montana. It reports serving 100 people through 1 service connection. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
1
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Perrys Water Service compare with other water systems in Blaine County?
By EPA's size categories, Perrys Water Service is a very small system (500 people or fewer). Blaine County has 12 active public water systems, and Perrys Water Service is the 3rd-largest of them by population served. Its population served is about 55% below the county average of 223 people per system, and accounts for 3.7% of the 2,672 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 Perrys Water Service 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 surface water means the system buys surface water from another public water system rather than drawing its own. 212 Montana systems (8.9%) list purchased surface water as their primary source.
Who owns and regulates Perrys Water Service?
EPA lists Perrys Water Service 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. 7 of the 12 active systems in Blaine County (58%) are also privately owned.
Does Perrys Water Service have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023. The violations listed here began between November 2015 and July 2023. By type: 3 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (3 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2023-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2015-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 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.
Perrys Water Service: frequently asked questions
Who runs Perrys Water Service?
Perrys Water Service (PWSID MT0004869) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Perrys Water Service serve?
Perrys Water Service reports serving 100 people through 1 service connection in Blaine County, Montana.
Where does Perrys Water Service get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Perrys Water Service have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2023. 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 Perrys Water Service'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 4 violations for this system; none is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Perrys Water Service's water quality report?
As a community water system, Perrys Water Service 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 Blaine County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chinook City of | Blaine | 1,300 | Community | Surface water |
| Harlem City of | Blaine | 820 | Community | Surface water |
| Turner School District No 43 | Blaine | 97 | Non-transient non-community | Groundwater |
| Hartland Colony | Blaine | 73 | Community | Groundwater |
| The Border Bar | Blaine | 52 | Transient non-community | Groundwater |
| Turner Colony | Blaine | 50 | 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, “Perrys Water Service, PWSID MT0004869, Montana”, https://aquacensus.com/water-systems/montana/perrys-water-service-mt0004869 (data as of October 1, 2026).