Public water system · MT0004805
ActiveMontana State Hospital Complex
At a glance
Montana State Hospital Complex (PWSID MT0004805) is an active community water system in Deer Lodge County, Montana. It reports serving 721 people through 37 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
721
Service connections
37
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Montana State Hospital Complex compare with other water systems in Deer Lodge County?
By EPA's size categories, Montana State Hospital Complex is a small system (501 to 3,300 people). Deer Lodge County has 16 active public water systems, and Montana State Hospital Complex is the 2nd-largest of them by population served. Its population served is about 20% above the county average of 599 people per system, and accounts for 7.5% of the 9,588 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 Montana State Hospital Complex 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 Montana State Hospital Complex?
EPA lists Montana State Hospital Complex 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. 4 of the 16 active systems in Deer Lodge County (25%) are also owned by a state government.
Does Montana State Hospital Complex have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025. The violations listed here began between August 2021 and October 2025. By type: 7 monitoring and reporting and 4 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 8 as resolved, 2 as archived and 1 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2024-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2021-09-29 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 11 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.
Montana State Hospital Complex: frequently asked questions
Who runs Montana State Hospital Complex?
Montana State Hospital Complex (PWSID MT0004805) is a community water system owned by a state government. It is regulated by the MT state drinking water program.
How many people does Montana State Hospital Complex serve?
Montana State Hospital Complex reports serving 721 people through 37 service connections in Deer Lodge County, Montana.
Where does Montana State Hospital Complex 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 Montana State Hospital Complex have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025. 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 Montana State Hospital Complex'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 11 violations for this system; none is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Montana State Hospital Complex's water quality report?
As a community water system, Montana State Hospital Complex 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 Deer Lodge County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Anaconda Water Department | Deer Lodge | 6,750 | Community | Groundwater |
| Town Pump Anaconda 1 | Deer Lodge | 524 | Transient non-community | Groundwater |
| Anaconda Interchange Rest Area | Deer Lodge | 465 | Transient non-community | Groundwater |
| Haufbrau | Deer Lodge | 300 | Transient non-community | Groundwater |
| Anaconda Ccc | Deer Lodge | 290 | Community | Surface water |
| Anaconda Country Club | Deer Lodge | 150 | 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, “Montana State Hospital Complex, PWSID MT0004805, Montana”, https://aquacensus.com/water-systems/montana/montana-state-hospital-complex-mt0004805 (data as of October 1, 2026).