Public water system · MT0000765

Active

Ulm School Dist 85

At a glance

Ulm School Dist 85 (PWSID MT0000765) is an active non-transient non-community water system in Cascade County, Montana. It reports serving 94 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2022.

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

Population served

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDMT0000765

System typeNon-transient non-community water system

Activity statusActive

Population served94

Service connections1

Primary water sourceGroundwater

Owner typeState government

Primacy agencyMT state drinking water program

City servedUlm

StateMontana

ZIP—

CountyCascade County

How does Ulm School Dist 85 compare with other water systems in Cascade County?

By EPA's size categories, Ulm School Dist 85 is a very small system (500 people or fewer). Cascade County has 98 active public water systems. Its population served is well below the county average of 985 people per system, and accounts for less than 0.1% of the 96,513 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Ulm School Dist 85 is well below that figure.

What does “non-transient non-community water system” mean?

A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Montana has 319 active non-transient non-community water systems, 13% 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 Ulm School Dist 85?

EPA lists Ulm School Dist 85 as owned by a state 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. 10 of the 98 active systems in Cascade County (10%) are also owned by a state government.

Does Ulm School Dist 85 have drinking water violations?

Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in October 2022. The violations listed here began between January 2011 and October 2022. By type: 10 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is E. coli (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
2022-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2020-09-10	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2020-08-19	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2019-05-03	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Resolved
2019-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2019-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2018-09-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2014-11-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2014-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlor epoxidecode 2067	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Methoxychlorcode 2015	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.

Ulm School Dist 85: frequently asked questions

Who runs Ulm School Dist 85?

Ulm School Dist 85 (PWSID MT0000765) is a non-transient non-community water system owned by a state government. It is regulated by the MT state drinking water program.

How many people does Ulm School Dist 85 serve?

Ulm School Dist 85 reports serving 94 people through 1 service connection in Cascade County, Montana.

Where does Ulm School Dist 85 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 Ulm School Dist 85 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 October 2022. 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 Ulm School Dist 85'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 October 2022. For current results, consult EPA ECHO, or the MT state drinking water program.

Where can I find Ulm School Dist 85's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Ulm School Dist 85 is a non-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 Cascade County

Water system	County	Population served	Type	Source
Great Falls City of	Cascade	60,000	Community	Surface water
Malmstrom Air Force Base	Cascade	8,850	Community	Purchased surface water
Source Giant Springs Inc.	Cascade	3,007	Non-transient non-community	Groundwater
Montana Expo Park Cascade County	Cascade	2,510	Transient non-community	Purchased surface water
Sun Prairie Village County	Cascade	1,800	Community	Groundwater
University of Providence	Cascade	1,472	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, “Ulm School Dist 85, PWSID MT0000765, Montana”, https://aquacensus.com/water-systems/montana/ulm-school-dist-85-mt0000765 (data as of October 1, 2026).