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Community Water System · PWS MT0000192

Culbertson Town Of

Culbertson, Montana 59218 - drinking water served from surface water sources to 714 people, tracked in EPA SDWIS and UCMR5.

714
People served
39
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 39 drinking-water violations at Culbertson Town Of, 3% of them health-based - below the Montana per-system average.

39
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
714
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Culbertson Town Of

Culbertson Town Of is a local-owned community water system that delivers drinking water to 714 residents in Culbertson, Montana (Roosevelt County) through 434 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 39 total violations for this system , of which 1 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 35 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 11 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%).

Culbertson Town Of's 39 violations sit below 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
714
Total Violations
39
Health-Based Violations
1
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
434
County
Roosevelt
School/Daycare
No
MCL Violations
0
Monitoring Violations
35
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 11 2018
Coliform (TCR) MR 9 2007
Asbestos MR 3 2011
Thallium, Total MR 2 1997
Nickel MR 2 1997
Beryllium, Total MR 2 1997
Antimony, Total MR 2 1997
Selenium MR 1 1994
Arsenic MR 1 1997
Nitrate MR 1 1993
CYANIDE MR 1 1994
Surface Water Treatment Rule TT 1 1994

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 Culbertson 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 MT0000192 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
2018 Lead and Copper Rule MR 11 SDWIS / MT0000192 / 5000
2011 Asbestos MR 3 SDWIS / MT0000192 / 1094
2007 Coliform (TCR) MR 9 SDWIS / MT0000192 / 3100
1997 Thallium, Total MR 2 SDWIS / MT0000192 / 1085
1997 Nickel MR 2 SDWIS / MT0000192 / 1036
1997 Beryllium, Total MR 2 SDWIS / MT0000192 / 1075
1997 Antimony, Total MR 2 SDWIS / MT0000192 / 1074
1997 Arsenic MR 1 SDWIS / MT0000192 / 1005
1994 Selenium MR 1 SDWIS / MT0000192 / 1045
1994 CYANIDE MR 1 SDWIS / MT0000192 / 1024
1994 Surface Water Treatment Rule TT 1 SDWIS / MT0000192 / 0200
1993 Nitrate MR 1 SDWIS / MT0000192 / 1040

How Culbertson Town Of Compares

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

Metric Culbertson Town Of Montana avg Federal benchmark
Total violations 39 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 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 714 492 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 Culbertson Town Of water safe to drink? ▼
Culbertson Town Of (PWS ID: MT0000192) has 39 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 714 people using Surface Water sources.
How many people does Culbertson Town Of serve? ▼
Culbertson Town Of serves 714 people in Culbertson, Montana. It is a Local-owned system using Surface Water water sources with 434 service connections.
What type of violations does Culbertson Town Of have? ▼
Culbertson Town Of has 39 total violations: 1 health-based violations (MCL exceedances or treatment failures), 35 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Culbertson Town Of water? ▼
No PFAS testing data is available for Culbertson Town Of under the EPA's UCMR5 monitoring program.
What water source does Culbertson Town Of use? ▼
Culbertson 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.