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Community Water System · PWS MT0002974

Seville Colony

Cut Bank, Montana 59427 - drinking water served from surface water sources to 116 people, tracked in EPA SDWIS and UCMR5.

116
People served
254
EPA violations
14
Health-based
Untested
UCMR5 result

The verdict

EPA records 254 drinking-water violations at Seville Colony, 6% of them health-based - above the Montana per-system average.

254
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
116
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Seville Colony

Seville Colony is a private-owned community water system that delivers drinking water to 116 residents in Cut Bank, Montana (Glacier County) through 10 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 254 total violations for this system , of which 14 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 215 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 CARBON, TOTAL, recorded in 45 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%).

Seville Colony's 254 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
116
Total Violations
254
Health-Based Violations
14
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
10
County
Glacier
School/Daycare
No
MCL Violations
1
Monitoring Violations
215
Treatment Tech Violations
13

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL MR 45 2004
Coliform (TCR) MR 23 2002
Surface Water Treatment Rule MR 11 2010
Consumer Confidence Rule Other 11 2017
Surface Water Treatment Rule TT 9 1995
Lead and Copper Rule MR 8 2015
TTHM MR 8 2025
Total Haloacetic Acids (HAA5) MR 8 2025
Xylenes, Total MR 4 2006
Vinyl chloride MR 4 2006
Carbon tetrachloride MR 4 2006
CHLOROBENZENE MR 4 2006
Toluene MR 4 2006
Tetrachloroethylene MR 4 2006
Styrene MR 4 2006
1,2-Dichloropropane MR 4 2006
cis-1,2-Dichloroethylene MR 4 2006
1,1-Dichloroethylene MR 4 2006
Trichloroethylene MR 4 2006
Benzene MR 4 2006
1,2-Dichloroethane MR 4 2006
Antimony, Total MR 4 2006
1,2,4-Trichlorobenzene MR 4 2006
p-Dichlorobenzene MR 4 2006
trans-1,2-Dichloroethylene MR 4 2006
Arsenic MR 4 2006
Thallium, Total MR 4 2006
Beryllium, Total MR 4 2006
Asbestos MR 4 2020
Nickel MR 4 2006

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 Seville Colony.

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 MT0002974 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 TTHM MR 8 SDWIS / MT0002974 / 2950
2025 Total Haloacetic Acids (HAA5) MR 8 SDWIS / MT0002974 / 2456
2020 Asbestos MR 4 SDWIS / MT0002974 / 1094
2020 Revised Total Coliform Rule MON 3 SDWIS / MT0002974 / 8000
2017 Consumer Confidence Rule Other 11 SDWIS / MT0002974 / 7000
2015 Lead and Copper Rule MR 8 SDWIS / MT0002974 / 5000
2010 Surface Water Treatment Rule MR 11 SDWIS / MT0002974 / 0200
2010 Interim Enhanced Surface Water Treatment Rule TT 4 SDWIS / MT0002974 / 0300
2006 Xylenes, Total MR 4 SDWIS / MT0002974 / 2955
2006 Vinyl chloride MR 4 SDWIS / MT0002974 / 2976
2006 Carbon tetrachloride MR 4 SDWIS / MT0002974 / 2982
2006 CHLOROBENZENE MR 4 SDWIS / MT0002974 / 2989
2006 Toluene MR 4 SDWIS / MT0002974 / 2991
2006 Tetrachloroethylene MR 4 SDWIS / MT0002974 / 2987
2006 Styrene MR 4 SDWIS / MT0002974 / 2996

How Seville Colony Compares

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

Metric Seville Colony Montana avg Federal benchmark
Total violations 254 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 14 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 116 492 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 Seville Colony water safe to drink? ▼
Seville Colony (PWS ID: MT0002974) has 254 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 116 people using Surface Water sources.
How many people does Seville Colony serve? ▼
Seville Colony serves 116 people in Cut Bank, Montana. It is a Private-owned system using Surface Water water sources with 10 service connections.
What type of violations does Seville Colony have? ▼
Seville Colony has 254 total violations: 14 health-based violations (MCL exceedances or treatment failures), 215 monitoring/reporting violations, and 13 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Seville Colony water? ▼
No PFAS testing data is available for Seville Colony under the EPA's UCMR5 monitoring program.
What water source does Seville Colony use? ▼
Seville Colony 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.