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Community Water System · PWS MT0000277

Lodge Grass Town Of

Lodge Grass, Montana 59050 - drinking water served from groundwater sources to 480 people, tracked in EPA SDWIS and UCMR5.

480
People served
1,445
EPA violations
19
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,445 drinking-water violations at Lodge Grass Town Of, 1% of them health-based - above the Montana per-system average.

1,445
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
480
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lodge Grass Town Of

Lodge Grass Town Of is a local-owned community water system that delivers drinking water to 480 residents in Lodge Grass, Montana (Big Horn County) through 186 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,445 total violations for this system , of which 19 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,411 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 Coliform (TCR), recorded in 55 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%).

Lodge Grass Town Of's 1,445 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
480
Total Violations
1,445
Health-Based Violations
19
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
186
County
Big Horn
School/Daycare
No
MCL Violations
19
Monitoring Violations
1,411
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 55 2013
1,2,4-Trichlorobenzene MR 49 2020
Xylenes, Total MR 49 2020
DICHLOROMETHANE MR 49 2020
o-Dichlorobenzene MR 49 2020
trans-1,2-Dichloroethylene MR 49 2020
Carbon tetrachloride MR 49 2020
1,2-Dichloropropane MR 49 2020
Tetrachloroethylene MR 49 2020
CHLOROBENZENE MR 49 2020
Benzene MR 49 2020
Toluene MR 49 2020
Styrene MR 49 2020
1,2-Dichloroethane MR 49 2020
1,1,1-Trichloroethane MR 49 2020
Trichloroethylene MR 49 2020
cis-1,2-Dichloroethylene MR 49 2020
Vinyl chloride MR 49 2020
Ethylbenzene MR 49 2020
p-Dichlorobenzene MR 49 2020
1,1-Dichloroethylene MR 49 2020
1,1,2-Trichloroethane MR 49 2020
Picloram MR 24 2020
Combined Radium (-226 and -228) MR 22 2020
Gross Alpha, Excl. Radon and U MR 22 2020
Nitrate-Nitrite MR 21 2020
Coliform (TCR) MCL 19 2005
Lead and Copper Rule MR 19 2024
Arsenic MR 10 1999
Nickel MR 9 2020

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 Lodge Grass 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 MT0000277 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 Consumer Confidence Rule Other 8 SDWIS / MT0000277 / 7000
2024 Lead and Copper Rule MR 19 SDWIS / MT0000277 / 5000
2020 1,2,4-Trichlorobenzene MR 49 SDWIS / MT0000277 / 2378
2020 Xylenes, Total MR 49 SDWIS / MT0000277 / 2955
2020 DICHLOROMETHANE MR 49 SDWIS / MT0000277 / 2964
2020 o-Dichlorobenzene MR 49 SDWIS / MT0000277 / 2968
2020 trans-1,2-Dichloroethylene MR 49 SDWIS / MT0000277 / 2979
2020 Carbon tetrachloride MR 49 SDWIS / MT0000277 / 2982
2020 1,2-Dichloropropane MR 49 SDWIS / MT0000277 / 2983
2020 Tetrachloroethylene MR 49 SDWIS / MT0000277 / 2987
2020 CHLOROBENZENE MR 49 SDWIS / MT0000277 / 2989
2020 Benzene MR 49 SDWIS / MT0000277 / 2990
2020 Toluene MR 49 SDWIS / MT0000277 / 2991
2020 Styrene MR 49 SDWIS / MT0000277 / 2996
2020 1,2-Dichloroethane MR 49 SDWIS / MT0000277 / 2980

How Lodge Grass Town Of Compares

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

Metric Lodge Grass Town Of Montana avg Federal benchmark
Total violations 1,445 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 19 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 480 492 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 Lodge Grass Town Of water safe to drink? ▼
Lodge Grass Town Of (PWS ID: MT0000277) has 1445 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 480 people using Groundwater sources.
How many people does Lodge Grass Town Of serve? ▼
Lodge Grass Town Of serves 480 people in Lodge Grass, Montana. It is a Local-owned system using Groundwater water sources with 186 service connections.
What type of violations does Lodge Grass Town Of have? ▼
Lodge Grass Town Of has 1,445 total violations: 19 health-based violations (MCL exceedances or treatment failures), 1,411 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lodge Grass Town Of water? ▼
No PFAS testing data is available for Lodge Grass Town Of under the EPA's UCMR5 monitoring program.
What water source does Lodge Grass Town Of use? ▼
Lodge Grass Town Of 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.