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Community Water System · PWS MT0000203

Dodson Town Of

Dodson, Montana 59524 - drinking water served from groundwater sources to 120 people, tracked in EPA SDWIS and UCMR5.

120
People served
718
EPA violations
30
Health-based
Untested
UCMR5 result

The verdict

EPA records 718 drinking-water violations at Dodson Town Of, 4% of them health-based - above the Montana per-system average.

718
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
120
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Dodson Town Of

Dodson Town Of is a local-owned community water system that delivers drinking water to 120 residents in Dodson, Montana (Phillips County) through 55 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 718 total violations for this system , of which 30 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 654 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 Consumer Confidence Rule, recorded in 31 violations (Other). 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, 5 of 45 UCMR5-tested systems have reported PFAS detections (11.1%).

Dodson Town Of's 718 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
120
Total Violations
718
Health-Based Violations
30
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
55
County
Phillips
School/Daycare
No
MCL Violations
26
Monitoring Violations
654
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 31 2025
Revised Total Coliform Rule MON 27 2025
Coliform (TCR) MCL 22 2006
Nitrate-Nitrite MR 19 2024
cis-1,2-Dichloroethylene MR 18 2020
Xylenes, Total MR 18 2020
DICHLOROMETHANE MR 18 2020
o-Dichlorobenzene MR 18 2020
Vinyl chloride MR 18 2020
1,1-Dichloroethylene MR 18 2020
trans-1,2-Dichloroethylene MR 18 2020
1,2-Dichloropropane MR 18 2020
Trichloroethylene MR 18 2020
CHLOROBENZENE MR 18 2020
Benzene MR 18 2020
Toluene MR 18 2020
Ethylbenzene MR 18 2020
Styrene MR 18 2020
Tetrachloroethylene MR 18 2020
Carbon tetrachloride MR 18 2020
1,2,4-Trichlorobenzene MR 18 2020
1,1,2-Trichloroethane MR 18 2020
1,1,1-Trichloroethane MR 18 2020
1,2-Dichloroethane MR 18 2020
p-Dichlorobenzene MR 18 2020
Lead and Copper Rule MR 16 2024
Gross Alpha, Excl. Radon and U MR 14 2020
Coliform (TCR) MR 13 2015
E. COLI MR 9 2025
Dalapon MR 6 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 Dodson 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 MT0000203 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 31 SDWIS / MT0000203 / 7000
2025 Revised Total Coliform Rule MON 27 SDWIS / MT0000203 / 8000
2025 E. COLI MR 9 SDWIS / MT0000203 / 3014
2024 Nitrate-Nitrite MR 19 SDWIS / MT0000203 / 1038
2024 Lead and Copper Rule MR 16 SDWIS / MT0000203 / 5000
2021 Groundwater Rule TT 4 SDWIS / MT0000203 / 0700
2020 cis-1,2-Dichloroethylene MR 18 SDWIS / MT0000203 / 2380
2020 Xylenes, Total MR 18 SDWIS / MT0000203 / 2955
2020 DICHLOROMETHANE MR 18 SDWIS / MT0000203 / 2964
2020 o-Dichlorobenzene MR 18 SDWIS / MT0000203 / 2968
2020 Vinyl chloride MR 18 SDWIS / MT0000203 / 2976
2020 1,1-Dichloroethylene MR 18 SDWIS / MT0000203 / 2977
2020 trans-1,2-Dichloroethylene MR 18 SDWIS / MT0000203 / 2979
2020 1,2-Dichloropropane MR 18 SDWIS / MT0000203 / 2983
2020 Trichloroethylene MR 18 SDWIS / MT0000203 / 2984

How Dodson Town Of Compares

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

Metric Dodson Town Of Montana avg Federal benchmark
Total violations 718 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 30 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 11.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 120 492 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 Dodson Town Of water safe to drink? ▼
Dodson Town Of (PWS ID: MT0000203) has 718 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Groundwater sources.
How many people does Dodson Town Of serve? ▼
Dodson Town Of serves 120 people in Dodson, Montana. It is a Local-owned system using Groundwater water sources with 55 service connections.
What type of violations does Dodson Town Of have? ▼
Dodson Town Of has 718 total violations: 30 health-based violations (MCL exceedances or treatment failures), 654 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Dodson Town Of water? ▼
No PFAS testing data is available for Dodson Town Of under the EPA's UCMR5 monitoring program.
What water source does Dodson Town Of use? ▼
Dodson 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.