Public water system · MT0000715

Active

Simms High School

At a glance

Simms High School (PWSID MT0000715) is an active non-transient non-community water system in Cascade County, Montana. It reports serving 180 people through 5 service connections. 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, none is health-based, and the most recent began in January 2026.

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

Population served

180

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDMT0000715

System typeNon-transient non-community water system

Activity statusActive

Population served180

Service connections5

Primary water sourceGroundwater

Owner typeState government

Primacy agencyMT state drinking water program

City servedSimms

StateMontana

ZIP—

CountyCascade County

How does Simms High School compare with other water systems in Cascade County?

By EPA's size categories, Simms High School 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 0.2% 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 Simms High School is about 58% 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 Simms High School?

EPA lists Simms High School 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 Simms High School 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 2026. The violations listed here began between January 2020 and January 2026. By type: 9 monitoring and reporting and 3 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2026-01-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2025-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Unaddressed
2024-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitrate-Nitritecode 1038	No	Resolved
2023-06-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2022-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Unaddressed
2021-12-01	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
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Hexachlorocyclopentadienecode 2042	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dinosebcode 2041	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Alachlor (Lasso)code 2051	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Hexachlorobenzenecode 2274	No	Resolved
2020-01-01	Monitoring and reportingMonitoring, Regular · code 03	Atrazinecode 2050	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.

Simms High School: frequently asked questions

Who runs Simms High School?

Simms High School (PWSID MT0000715) 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 Simms High School serve?

Simms High School reports serving 180 people through 5 service connections in Cascade County, Montana.

Where does Simms High School 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 Simms High School 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 2026. 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 Simms High School'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 2026. For current results, consult EPA ECHO, or the MT state drinking water program.

Where can I find Simms High School's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Simms High School 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, “Simms High School, PWSID MT0000715, Montana”, https://aquacensus.com/water-systems/montana/simms-high-school-mt0000715 (data as of October 1, 2026).