Public water system · MT0004870

Active

Red Lodge Koa Office

At a glance

Red Lodge Koa Office (PWSID MT0004870) is an active transient non-community water system in Carbon County, Montana. It reports serving 102 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; none is health-based, and the most recent began in April 2021.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

102

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDMT0004870

System typeTransient non-community water system

Activity statusActive

Population served102

Service connections1

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyMT state drinking water program

City servedRed Lodge

StateMontana

ZIP—

CountyCarbon County

How does Red Lodge Koa Office compare with other water systems in Carbon County?

By EPA's size categories, Red Lodge Koa Office is a very small system (500 people or fewer). Carbon County has 36 active public water systems. Its population served is about 60% below the county average of 253 people per system, and accounts for 1.1% of the 9,106 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 Red Lodge Koa Office is about 29% 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 Red Lodge Koa Office?

EPA lists Red Lodge Koa Office 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. 20 of the 36 active systems in Carbon County (56%) are also privately owned.

Does Red Lodge Koa Office have drinking water violations?

EPA's records list 9 violations for this system; none is health-based, and the most recent began in April 2021. The violations listed here began between November 2014 and April 2021. By type: 6 monitoring and 3 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (6 of them). EPA lists 9 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
2021-04-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-11-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2020-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2019-12-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2018-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2017-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitrate-Nitritecode 1038	No	Resolved
2015-12-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-11-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved

All 9 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.

Red Lodge Koa Office: frequently asked questions

Who runs Red Lodge Koa Office?

Red Lodge Koa Office (PWSID MT0004870) is a transient non-community water system privately owned. It is regulated by the MT state drinking water program.

How many people does Red Lodge Koa Office serve?

Red Lodge Koa Office reports serving 102 people through 1 service connection in Carbon County, Montana.

Where does Red Lodge Koa Office 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 Red Lodge Koa Office have any drinking water violations?

EPA's records list 9 violations for this system; none is health-based, and the most recent began in April 2021. 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 Red Lodge Koa Office'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 9 violations for this system; none is health-based, and the most recent began in April 2021. For current results, consult EPA ECHO, or the MT state drinking water program.

Where can I find Red Lodge Koa Office's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Red Lodge Koa Office 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 Carbon County

Water system	County	Population served	Type	Source
Red Lodge Mtn Main Lodge	Carbon	2,006	Transient non-community	Groundwater
Red Lodge Water Dept	Carbon	2,000	Community	Groundwater
Bridger Town of	Carbon	750	Community	Groundwater
Joliet Town of	Carbon	600	Community	Groundwater
Fromberg Town of	Carbon	498	Community	Groundwater
Bridger Rest Area	Carbon	400	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, “Red Lodge Koa Office, PWSID MT0004870, Montana”, https://aquacensus.com/water-systems/montana/red-lodge-koa-office-mt0004870 (data as of October 1, 2026).