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Community Water System · PWS MT0062207

Trapper Creek Job Corps

Darby, Montana 59829 - drinking water served from groundwater sources to 275 people, tracked in EPA SDWIS and UCMR5.

275
People served
233
EPA violations
62
Health-based
Untested
UCMR5 result

The verdict

EPA records 233 drinking-water violations at Trapper Creek Job Corps, 27% of them health-based - above the Montana per-system average.

233
Total EPA violations on record
27%
Health-based (MCL / treatment failure)
275
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Trapper Creek Job Corps

Trapper Creek Job Corps is a federal-owned community water system that delivers drinking water to 275 residents in Darby, Montana (Ravalli County) through 24 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 233 total violations for this system , of which 62 (27%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 163 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 62 violations (MCL, health-based). 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%).

Trapper Creek Job Corps's 233 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
275
Total Violations
233
Health-Based Violations
62
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Federal
Connections
24
County
Ravalli
School/Daycare
No
MCL Violations
62
Monitoring Violations
163
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 62 2014
Coliform (TCR) MR 17 2013
Revised Total Coliform Rule MON 12 2024
Lead and Copper Rule MR 10 2020
Consumer Confidence Rule Other 8 2023
Gross Alpha, Excl. Radon and U MR 6 2016
Endrin MR 4 2016
BHC-GAMMA MR 4 2016
Dalapon MR 4 2016
Di(2-ethylhexyl) adipate MR 4 2016
Di(2-ethylhexyl) phthalate MR 4 2016
Picloram MR 4 2016
Hexachlorocyclopentadiene MR 4 2016
Aldicarb sulfoxide MR 4 2016
Carbofuran MR 4 2016
Atrazine MR 4 2016
LASSO MR 4 2016
Heptachlor MR 4 2016
Heptachlor epoxide MR 4 2016
2,4-D MR 4 2016
HEXACHLOROBENZENE MR 4 2016
Benzo(a)pyrene MR 4 2016
Pentachlorophenol MR 4 2016
Combined Radium (-226 and -228) MR 4 2016
Simazine MR 4 2016
Chlordane MR 4 2016
Toxaphene MR 4 2016
2,4,5-TP MR 4 2016
OXAMYL MR 4 2016
Aldicarb sulfone MR 4 2016

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 Trapper Creek Job Corps.

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 MT0062207 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 12 SDWIS / MT0062207 / 8000
2024 Nitrate-Nitrite MR 3 SDWIS / MT0062207 / 1038
2023 Consumer Confidence Rule Other 8 SDWIS / MT0062207 / 7000
2021 TTHM MR 3 SDWIS / MT0062207 / 2950
2021 Total Haloacetic Acids (HAA5) MR 3 SDWIS / MT0062207 / 2456
2020 Lead and Copper Rule MR 10 SDWIS / MT0062207 / 5000
2016 Gross Alpha, Excl. Radon and U MR 6 SDWIS / MT0062207 / 4000
2016 Endrin MR 4 SDWIS / MT0062207 / 2005
2016 BHC-GAMMA MR 4 SDWIS / MT0062207 / 2010
2016 Dalapon MR 4 SDWIS / MT0062207 / 2031
2016 Di(2-ethylhexyl) adipate MR 4 SDWIS / MT0062207 / 2035
2016 Di(2-ethylhexyl) phthalate MR 4 SDWIS / MT0062207 / 2039
2016 Picloram MR 4 SDWIS / MT0062207 / 2040
2016 Hexachlorocyclopentadiene MR 4 SDWIS / MT0062207 / 2042
2016 Aldicarb sulfoxide MR 4 SDWIS / MT0062207 / 2043

How Trapper Creek Job Corps Compares

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

Metric Trapper Creek Job Corps Montana avg Federal benchmark
Total violations 233 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 62 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 275 492 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 Trapper Creek Job Corps water safe to drink? ▼
Trapper Creek Job Corps (PWS ID: MT0062207) has 233 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 275 people using Groundwater sources.
How many people does Trapper Creek Job Corps serve? ▼
Trapper Creek Job Corps serves 275 people in Darby, Montana. It is a Federal-owned system using Groundwater water sources with 24 service connections.
What type of violations does Trapper Creek Job Corps have? ▼
Trapper Creek Job Corps has 233 total violations: 62 health-based violations (MCL exceedances or treatment failures), 163 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Trapper Creek Job Corps water? ▼
No PFAS testing data is available for Trapper Creek Job Corps under the EPA's UCMR5 monitoring program.
What water source does Trapper Creek Job Corps use? ▼
Trapper Creek Job Corps 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.