Public water system · MT0001649
ActiveMiller Colony
At a glance
Miller Colony (PWSID MT0001649) is an active community water system in Teton County, Montana. It reports serving 84 people through 11 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 December 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
84
Service connections
11
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Miller Colony compare with other water systems in Teton County?
By EPA's size categories, Miller Colony is a very small system (500 people or fewer). Teton County has 16 active public water systems. Its population served is well below the county average of 310 people per system, and accounts for 1.7% of the 4,960 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 Miller Colony 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. 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 Miller Colony?
EPA lists Miller Colony 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. 8 of the 16 active systems in Teton County (50%) are also privately owned.
Does Miller Colony have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2020. The violations listed here began between April 2012 and December 2020. By type: 10 monitoring and reporting, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2020-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2016-01-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2014-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Unfilt/GWR) · code 31 | Groundwater Rulecode 0700 | No | Resolved |
| 2013-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-10-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | 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.
Miller Colony: frequently asked questions
Who runs Miller Colony?
Miller Colony (PWSID MT0001649) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Miller Colony serve?
Miller Colony reports serving 84 people through 11 service connections in Teton County, Montana.
Where does Miller Colony 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 Miller Colony 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 December 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 Miller Colony'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 December 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Miller Colony's water quality report?
As a community water system, Miller Colony 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 Teton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Choteau City of | Teton | 1,691 | Community | Groundwater |
| Fairfield Town of | Teton | 718 | Community | Groundwater |
| Dutton Rest Stop | Teton | 500 | Transient non-community | Purchased groundwater |
| Tri County Water District | Teton | 470 | Community | Groundwater |
| Dutton Town of | Teton | 338 | Community | Groundwater |
| Fairfield Mennonite Church | Teton | 260 | Non-transient non-community | Purchased surface water |
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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, “Miller Colony, PWSID MT0001649, Montana”, https://aquacensus.com/water-systems/montana/miller-colony-mt0001649 (data as of October 1, 2026).