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Transient Non-Community Water System · PWS MT0004371

Mid Valley Center

Stevensville, Montana 59807 - drinking water served from groundwater sources to 36 people, tracked in EPA SDWIS and UCMR5.

36
People served
261
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 261 drinking-water violations at Mid Valley Center, 1% of them health-based - above the Montana per-system average.

261
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
36
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mid Valley Center

Mid Valley Center is a private-owned transient non-community water system that delivers drinking water to 36 residents in Stevensville, Montana (Ravalli County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 261 total violations for this system , of which 3 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 258 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Revised Total Coliform Rule, recorded in 16 violations (MON). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Montana, EPA tracks 2,263 public water systems serving 1,112,267 people, with 297,270 cumulative violations and 25,922 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 131.4 violations. Statewide, 5 of 45 UCMR5-tested systems have reported PFAS detections (11.1%).

Mid Valley Center's 261 violations sit above the Montana average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
36
Total Violations
261
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
2
County
Ravalli
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
258
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 16 2025
Lead and Copper Rule MR 8 2005
Coliform (TCR) MR 6 2005
Antimony, Total MR 4 2002
Selenium MR 4 2002
Endrin MR 4 2002
BHC-GAMMA MR 4 2002
Methoxychlor MR 4 2002
Toxaphene MR 4 2002
Di(2-ethylhexyl) adipate MR 4 2002
OXAMYL MR 4 2002
Simazine MR 4 2002
Di(2-ethylhexyl) phthalate MR 4 2002
Picloram MR 4 2002
Aldicarb sulfoxide MR 4 2002
Carbofuran MR 4 2002
Atrazine MR 4 2002
Heptachlor MR 4 2002
Heptachlor epoxide MR 4 2002
2,4,5-TP MR 4 2002
HEXACHLOROBENZENE MR 4 2002
Chlordane MR 4 2002
1,2,4-Trichlorobenzene MR 4 2004
cis-1,2-Dichloroethylene MR 4 2004
Xylenes, Total MR 4 2004
o-Dichlorobenzene MR 4 2004
Vinyl chloride MR 4 2004
1,1-Dichloroethylene MR 4 2004
trans-1,2-Dichloroethylene MR 4 2004
1,2-Dichloroethane MR 4 2004

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Mid Valley Center.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID MT0004371 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Montana Drinking Water Authority

Montana's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find MT regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Revised Total Coliform Rule MON 16 SDWIS / MT0004371 / 8000
2022 Revised Total Coliform Rule TT 3 SDWIS / MT0004371 / 8000
2005 Lead and Copper Rule MR 8 SDWIS / MT0004371 / 5000
2005 Coliform (TCR) MR 6 SDWIS / MT0004371 / 3100
2004 1,2,4-Trichlorobenzene MR 4 SDWIS / MT0004371 / 2378
2004 cis-1,2-Dichloroethylene MR 4 SDWIS / MT0004371 / 2380
2004 Xylenes, Total MR 4 SDWIS / MT0004371 / 2955
2004 o-Dichlorobenzene MR 4 SDWIS / MT0004371 / 2968
2004 Vinyl chloride MR 4 SDWIS / MT0004371 / 2976
2004 1,1-Dichloroethylene MR 4 SDWIS / MT0004371 / 2977
2004 trans-1,2-Dichloroethylene MR 4 SDWIS / MT0004371 / 2979
2004 1,2-Dichloroethane MR 4 SDWIS / MT0004371 / 2980
2004 1,2-Dichloropropane MR 4 SDWIS / MT0004371 / 2983
2004 Tetrachloroethylene MR 4 SDWIS / MT0004371 / 2987
2004 CHLOROBENZENE MR 4 SDWIS / MT0004371 / 2989

How Mid Valley Center Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Mid Valley Center Montana avg Federal benchmark
Total violations 261 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 11.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 36 492 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,263 regulated public water systems in Montana.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Mid Valley Center water safe to drink? ▼
Mid Valley Center (PWS ID: MT0004371) has 261 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 36 people using Groundwater sources.
How many people does Mid Valley Center serve? ▼
Mid Valley Center serves 36 people in Stevensville, Montana. It is a Private-owned system using Groundwater water sources with 2 service connections.
What type of violations does Mid Valley Center have? ▼
Mid Valley Center has 261 total violations: 3 health-based violations (MCL exceedances or treatment failures), 258 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mid Valley Center water? ▼
No PFAS testing data is available for Mid Valley Center under the EPA's UCMR5 monitoring program.
What water source does Mid Valley Center use? ▼
Mid Valley Center uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.