PlainWater
States → Montana

Community Water System · PWS MT0000298

Neihart Town Of

Neihart, Montana 59465 - drinking water served from surface water sources to 229 people, tracked in EPA SDWIS and UCMR5.

229
People served
376
EPA violations
128
Health-based
Untested
UCMR5 result

The verdict

EPA records 376 drinking-water violations at Neihart Town Of, 34% of them health-based - above the Montana per-system average.

376
Total EPA violations on record
34%
Health-based (MCL / treatment failure)
229
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Neihart Town Of

Neihart Town Of is a local-owned community water system that delivers drinking water to 229 residents in Neihart, Montana (Cascade County) through 110 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 376 total violations for this system , of which 128 (34%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 224 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 Surface Water Treatment Rule, recorded in 101 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%).

Neihart Town Of's 376 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
229
Total Violations
376
Health-Based Violations
128
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
110
County
Cascade
School/Daycare
No
MCL Violations
1
Monitoring Violations
224
Treatment Tech Violations
127

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 101 2006
Interim Enhanced Surface Water Treatment Rule TT 85 2009
Lead and Copper Rule MR 41 2018
Surface Water Treatment Rule TT 39 2004
Interim Enhanced Surface Water Treatment Rule MR 35 2006
Coliform (TCR) MR 14 2003
Consumer Confidence Rule Other 14 2020
Arsenic MR 7 2001
Revised Total Coliform Rule MON 6 2024
Nitrate MR 3 1997
Chlorine MR 3 2004
TTHM MR 3 2004
Total Haloacetic Acids (HAA5) MR 3 2004
Lead and Copper Rule TT 3 2001
Thallium, Total MR 2 1997
Nickel MR 2 1997
Antimony, Total MR 2 1997
Beryllium, Total MR 2 1997
Coliform (TCR) MCL 1 1998

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 Neihart 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 MT0000298 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 6 SDWIS / MT0000298 / 8000
2020 Consumer Confidence Rule Other 14 SDWIS / MT0000298 / 7000
2018 Lead and Copper Rule MR 41 SDWIS / MT0000298 / 5000
2009 Interim Enhanced Surface Water Treatment Rule TT 85 SDWIS / MT0000298 / 0300
2006 Surface Water Treatment Rule MR 101 SDWIS / MT0000298 / 0200
2006 Interim Enhanced Surface Water Treatment Rule MR 35 SDWIS / MT0000298 / 0300
2004 Surface Water Treatment Rule TT 39 SDWIS / MT0000298 / 0200
2004 Chlorine MR 3 SDWIS / MT0000298 / 0999
2004 TTHM MR 3 SDWIS / MT0000298 / 2950
2004 Total Haloacetic Acids (HAA5) MR 3 SDWIS / MT0000298 / 2456
2003 Coliform (TCR) MR 14 SDWIS / MT0000298 / 3100
2001 Arsenic MR 7 SDWIS / MT0000298 / 1005
2001 Lead and Copper Rule TT 3 SDWIS / MT0000298 / 5000
1998 Coliform (TCR) MCL 1 SDWIS / MT0000298 / 3100
1997 Nitrate MR 3 SDWIS / MT0000298 / 1040

How Neihart Town Of Compares

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

Metric Neihart Town Of Montana avg Federal benchmark
Total violations 376 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 128 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 229 492 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 Neihart Town Of water safe to drink? ▼
Neihart Town Of (PWS ID: MT0000298) has 376 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 229 people using Surface Water sources.
How many people does Neihart Town Of serve? ▼
Neihart Town Of serves 229 people in Neihart, Montana. It is a Local-owned system using Surface Water water sources with 110 service connections.
What type of violations does Neihart Town Of have? ▼
Neihart Town Of has 376 total violations: 128 health-based violations (MCL exceedances or treatment failures), 224 monitoring/reporting violations, and 127 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Neihart Town Of water? ▼
No PFAS testing data is available for Neihart Town Of under the EPA's UCMR5 monitoring program.
What water source does Neihart Town Of use? ▼
Neihart Town Of 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.