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Community Water System · PWS MT0000020

Bainville Town Of

Bainville, Montana 59212 - drinking water served from surface water sources to 350 people, tracked in EPA SDWIS and UCMR5.

350
People served
606
EPA violations
27
Health-based
Untested
UCMR5 result

The verdict

EPA records 606 drinking-water violations at Bainville Town Of, 4% of them health-based - above the Montana per-system average.

606
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
350
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bainville Town Of

Bainville Town Of is a local-owned community water system that delivers drinking water to 350 residents in Bainville, Montana (Roosevelt County) through 138 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 606 total violations for this system , of which 27 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 563 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 102 violations (MR). 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, 28 of 45 UCMR5-tested systems have reported PFAS detections (62.2%).

Bainville Town Of's 606 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
350
Total Violations
606
Health-Based Violations
27
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
138
County
Roosevelt
School/Daycare
No
MCL Violations
24
Monitoring Violations
563
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 102 2012
Lead and Copper Rule MR 50 2022
Coliform (TCR) MCL 24 2005
Consumer Confidence Rule Other 15 2020
Nitrate-Nitrite MR 14 2004
Barium MR 10 2002
Cadmium MR 10 2002
Chromium MR 10 2002
Mercury MR 10 2002
Nickel MR 10 2002
Beryllium, Total MR 10 2002
Thallium, Total MR 10 2002
Fluoride MR 10 2002
Selenium MR 10 2002
Antimony, Total MR 10 2002
TTHM MR 7 2015
Total Haloacetic Acids (HAA5) MR 7 2015
Arsenic MR 7 2002
Revised Total Coliform Rule MON 6 2024
1,2,4-Trichlorobenzene MR 5 1999
cis-1,2-Dichloroethylene MR 5 1999
Xylenes, Total MR 5 1999
DICHLOROMETHANE MR 5 1999
o-Dichlorobenzene MR 5 1999
Vinyl chloride MR 5 1999
trans-1,2-Dichloroethylene MR 5 1999
1,2-Dichloroethane MR 5 1999
1,1,1-Trichloroethane MR 5 1999
Carbon tetrachloride MR 5 1999
1,2-Dichloropropane MR 5 1999

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 Bainville Town Of.

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 MT0000020 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
2024 Revised Total Coliform Rule MON 6 SDWIS / MT0000020 / 8000
2022 Lead and Copper Rule MR 50 SDWIS / MT0000020 / 5000
2020 Consumer Confidence Rule Other 15 SDWIS / MT0000020 / 7000
2015 TTHM MR 7 SDWIS / MT0000020 / 2950
2015 Total Haloacetic Acids (HAA5) MR 7 SDWIS / MT0000020 / 2456
2012 Coliform (TCR) MR 102 SDWIS / MT0000020 / 3100
2011 Asbestos MR 3 SDWIS / MT0000020 / 1094
2008 Lead and Copper Rule TT 3 SDWIS / MT0000020 / 5000
2005 Coliform (TCR) MCL 24 SDWIS / MT0000020 / 3100
2004 Nitrate-Nitrite MR 14 SDWIS / MT0000020 / 1038
2002 Barium MR 10 SDWIS / MT0000020 / 1010
2002 Cadmium MR 10 SDWIS / MT0000020 / 1015
2002 Chromium MR 10 SDWIS / MT0000020 / 1020
2002 Mercury MR 10 SDWIS / MT0000020 / 1035
2002 Nickel MR 10 SDWIS / MT0000020 / 1036

How Bainville Town Of Compares

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

Metric Bainville Town Of Montana avg Federal benchmark
Total violations 606 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 27 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 62.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 350 492 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 Bainville Town Of water safe to drink? ▼
Bainville Town Of (PWS ID: MT0000020) has 606 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 350 people using Surface Water sources.
How many people does Bainville Town Of serve? ▼
Bainville Town Of serves 350 people in Bainville, Montana. It is a Local-owned system using Surface Water water sources with 138 service connections.
What type of violations does Bainville Town Of have? ▼
Bainville Town Of has 606 total violations: 27 health-based violations (MCL exceedances or treatment failures), 563 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bainville Town Of water? ▼
No PFAS testing data is available for Bainville Town Of under the EPA's UCMR5 monitoring program.
What water source does Bainville Town Of use? ▼
Bainville Town Of uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.