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Non-Transient Non-Community Water System · PWS MT0004110

HI Heat Industries Inc

Lewistown, Montana 59457 - drinking water served from groundwater sources to 75 people, tracked in EPA SDWIS and UCMR5.

75
People served
1,120
EPA violations
34
Health-based
Untested
UCMR5 result

The verdict

EPA records 1,120 drinking-water violations at HI Heat Industries Inc, 3% of them health-based - above the Montana per-system average.

1,120
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
75
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: HI Heat Industries Inc

HI Heat Industries Inc is a private-owned non-transient non-community water system that delivers drinking water to 75 residents in Lewistown, Montana (Fergus County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,120 total violations for this system , of which 34 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,086 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 Lead and Copper Rule, recorded in 82 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%).

HI Heat Industries Inc's 1,120 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
75
Total Violations
1,120
Health-Based Violations
34
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Fergus
School/Daycare
No
MCL Violations
34
Monitoring Violations
1,086
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 82 2020
Nitrate-Nitrite MR 45 2024
Coliform (TCR) MCL 34 2009
Coliform (TCR) MR 23 2007
Atrazine MR 18 2014
LASSO MR 18 2014
Heptachlor epoxide MR 18 2014
2,4,5-TP MR 18 2014
HEXACHLOROBENZENE MR 18 2014
Benzo(a)pyrene MR 18 2014
Chlordane MR 18 2014
Di(2-ethylhexyl) adipate MR 18 2014
Di(2-ethylhexyl) phthalate MR 18 2014
Carbofuran MR 18 2014
Methoxychlor MR 18 2014
Toxaphene MR 18 2014
Dalapon MR 18 2014
Picloram MR 18 2014
Dinoseb MR 18 2014
Hexachlorocyclopentadiene MR 18 2014
Heptachlor MR 18 2014
BHC-GAMMA MR 18 2014
Simazine MR 18 2014
2,4-D MR 18 2014
Endrin MR 18 2014
Pentachlorophenol MR 18 2014
OXAMYL MR 18 2014
1,2,4-Trichlorobenzene MR 16 2008
p-Dichlorobenzene MR 16 2008
Vinyl chloride MR 16 2008

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 HI Heat Industries Inc.

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 MT0004110 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 E. COLI MR 3 SDWIS / MT0004110 / 3014
2024 Nitrate-Nitrite MR 45 SDWIS / MT0004110 / 1038
2020 Lead and Copper Rule MR 82 SDWIS / MT0004110 / 5000
2020 Revised Total Coliform Rule MON 4 SDWIS / MT0004110 / 8000
2014 Atrazine MR 18 SDWIS / MT0004110 / 2050
2014 LASSO MR 18 SDWIS / MT0004110 / 2051
2014 Heptachlor epoxide MR 18 SDWIS / MT0004110 / 2067
2014 2,4,5-TP MR 18 SDWIS / MT0004110 / 2110
2014 HEXACHLOROBENZENE MR 18 SDWIS / MT0004110 / 2274
2014 Benzo(a)pyrene MR 18 SDWIS / MT0004110 / 2306
2014 Chlordane MR 18 SDWIS / MT0004110 / 2959
2014 Di(2-ethylhexyl) adipate MR 18 SDWIS / MT0004110 / 2035
2014 Di(2-ethylhexyl) phthalate MR 18 SDWIS / MT0004110 / 2039
2014 Carbofuran MR 18 SDWIS / MT0004110 / 2046
2014 Methoxychlor MR 18 SDWIS / MT0004110 / 2015

How HI Heat Industries Inc Compares

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

Metric HI Heat Industries Inc Montana avg Federal benchmark
Total violations 1,120 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 34 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 75 492 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 HI Heat Industries Inc water safe to drink? ▼
HI Heat Industries Inc (PWS ID: MT0004110) has 1120 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 75 people using Groundwater sources.
How many people does HI Heat Industries Inc serve? ▼
HI Heat Industries Inc serves 75 people in Lewistown, Montana. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does HI Heat Industries Inc have? ▼
HI Heat Industries Inc has 1,120 total violations: 34 health-based violations (MCL exceedances or treatment failures), 1,086 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in HI Heat Industries Inc water? ▼
No PFAS testing data is available for HI Heat Industries Inc under the EPA's UCMR5 monitoring program.
What water source does HI Heat Industries Inc use? ▼
HI Heat Industries Inc uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.