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Community Water System · PWS MT0001772

Turner Colony

Turner, Montana 59542 - drinking water served from groundwater sources to 50 people, tracked in EPA SDWIS and UCMR5.

50
People served
739
EPA violations
113
Health-based
Untested
UCMR5 result

The verdict

EPA records 739 drinking-water violations at Turner Colony, 15% of them health-based - above the Montana per-system average.

739
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
50
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Turner Colony

Turner Colony is a private-owned community water system that delivers drinking water to 50 residents in Turner, Montana (Blaine County) through 17 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 739 total violations for this system , of which 113 (15%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 616 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 Lead and Copper Rule, recorded in 182 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%).

Turner Colony's 739 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
50
Total Violations
739
Health-Based Violations
113
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
17
County
Blaine
School/Daycare
No
MCL Violations
101
Monitoring Violations
616
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 182 2024
Nitrate-Nitrite MCL 97 2024
Nitrate-Nitrite MR 49 2020
Coliform (TCR) MR 17 2004
Consumer Confidence Rule Other 10 2008
E. COLI MR 9 2023
Nickel MR 7 2005
Beryllium, Total MR 7 2005
Fluoride MR 7 2005
Selenium MR 7 2005
Chromium MR 7 2005
Barium MR 7 2005
Mercury MR 7 2005
Thallium, Total MR 7 2005
Cadmium MR 7 2005
Groundwater Rule TT 7 2016
Antimony, Total MR 7 2005
OXAMYL MR 6 2005
Dalapon MR 6 2005
Pentachlorophenol MR 6 2005
Heptachlor MR 6 2005
Aldicarb sulfoxide MR 6 2005
Aldicarb MR 6 2005
LASSO MR 6 2005
2,4,5-TP MR 6 2005
BHC-GAMMA MR 6 2005
Methoxychlor MR 6 2005
Arsenic MR 6 2005
Toxaphene MR 6 2005
Di(2-ethylhexyl) adipate MR 6 2005

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 Turner 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 MT0001772 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 Lead and Copper Rule MR 182 SDWIS / MT0001772 / 5000
2024 Nitrate-Nitrite MCL 97 SDWIS / MT0001772 / 1038
2024 Revised Total Coliform Rule TT 5 SDWIS / MT0001772 / 8000
2023 E. COLI MR 9 SDWIS / MT0001772 / 3014
2020 Nitrate-Nitrite MR 49 SDWIS / MT0001772 / 1038
2016 Groundwater Rule TT 7 SDWIS / MT0001772 / 0700
2008 Consumer Confidence Rule Other 10 SDWIS / MT0001772 / 7000
2005 Nickel MR 7 SDWIS / MT0001772 / 1036
2005 Beryllium, Total MR 7 SDWIS / MT0001772 / 1075
2005 Fluoride MR 7 SDWIS / MT0001772 / 1025
2005 Selenium MR 7 SDWIS / MT0001772 / 1045
2005 Chromium MR 7 SDWIS / MT0001772 / 1020
2005 Barium MR 7 SDWIS / MT0001772 / 1010
2005 Mercury MR 7 SDWIS / MT0001772 / 1035
2005 Thallium, Total MR 7 SDWIS / MT0001772 / 1085

How Turner Colony Compares

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

Metric Turner Colony Montana avg Federal benchmark
Total violations 739 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 113 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 50 492 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 Turner Colony water safe to drink? ▼
Turner Colony (PWS ID: MT0001772) has 739 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 50 people using Groundwater sources.
How many people does Turner Colony serve? ▼
Turner Colony serves 50 people in Turner, Montana. It is a Private-owned system using Groundwater water sources with 17 service connections.
What type of violations does Turner Colony have? ▼
Turner Colony has 739 total violations: 113 health-based violations (MCL exceedances or treatment failures), 616 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Turner Colony water? ▼
No PFAS testing data is available for Turner Colony under the EPA's UCMR5 monitoring program.
What water source does Turner Colony use? ▼
Turner Colony uses Groundwater 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.