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Community Water System · PWS MT0001983

Hebgen Lake Estates Co Water Sewer Distr

West Yellowstone, Montana 59758 - drinking water served from groundwater sources to 230 people, tracked in EPA SDWIS and UCMR5.

230
People served
709
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 709 drinking-water violations at Hebgen Lake Estates Co Water Sewer Distr - above the Montana per-system average.

709
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
230
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hebgen Lake Estates Co Water Sewer Distr

Hebgen Lake Estates Co Water Sewer Distr is a local-owned community water system that delivers drinking water to 230 residents in West Yellowstone, Montana (Gallatin County) through 94 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 709 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 706 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 Gross Alpha, Excl. Radon and U, recorded in 25 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%).

Hebgen Lake Estates Co Water Sewer Distr's 709 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
230
Total Violations
709
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
94
County
Gallatin
School/Daycare
No
MCL Violations
0
Monitoring Violations
706
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Gross Alpha, Excl. Radon and U MR 25 2022
Coliform (TCR) MR 23 2012
OXAMYL MR 23 2013
Simazine MR 23 2013
Combined Radium (-226 and -228) MR 22 2022
Methoxychlor MR 20 2013
Dalapon MR 20 2013
Di(2-ethylhexyl) adipate MR 20 2013
Picloram MR 20 2013
Hexachlorocyclopentadiene MR 20 2013
Atrazine MR 20 2013
LASSO MR 20 2013
2,4-D MR 20 2013
HEXACHLOROBENZENE MR 20 2013
Benzo(a)pyrene MR 20 2013
Pentachlorophenol MR 20 2013
Endrin MR 20 2013
BHC-GAMMA MR 20 2013
Toxaphene MR 20 2013
Di(2-ethylhexyl) phthalate MR 20 2013
Aldicarb sulfone MR 20 2013
Carbofuran MR 20 2013
Aldicarb MR 20 2013
Aldicarb sulfoxide MR 20 2013
Heptachlor MR 20 2013
2,4,5-TP MR 20 2013
Chlordane MR 20 2013
Dinoseb MR 20 2013
Heptachlor epoxide MR 20 2013
Lead and Copper Rule MR 9 2024

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 Hebgen Lake Estates Co Water Sewer Distr.

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 MT0001983 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 Lead and Copper Rule MR 9 SDWIS / MT0001983 / 5000
2022 Gross Alpha, Excl. Radon and U MR 25 SDWIS / MT0001983 / 4000
2022 Combined Radium (-226 and -228) MR 22 SDWIS / MT0001983 / 4010
2016 Revised Total Coliform Rule MON 3 SDWIS / MT0001983 / 8000
2013 OXAMYL MR 23 SDWIS / MT0001983 / 2036
2013 Simazine MR 23 SDWIS / MT0001983 / 2037
2013 Methoxychlor MR 20 SDWIS / MT0001983 / 2015
2013 Dalapon MR 20 SDWIS / MT0001983 / 2031
2013 Di(2-ethylhexyl) adipate MR 20 SDWIS / MT0001983 / 2035
2013 Picloram MR 20 SDWIS / MT0001983 / 2040
2013 Hexachlorocyclopentadiene MR 20 SDWIS / MT0001983 / 2042
2013 Atrazine MR 20 SDWIS / MT0001983 / 2050
2013 LASSO MR 20 SDWIS / MT0001983 / 2051
2013 2,4-D MR 20 SDWIS / MT0001983 / 2105
2013 HEXACHLOROBENZENE MR 20 SDWIS / MT0001983 / 2274

How Hebgen Lake Estates Co Water Sewer Distr Compares

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

Metric Hebgen Lake Estates Co Water Sewer Distr Montana avg Federal benchmark
Total violations 709 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 230 492 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 Hebgen Lake Estates Co Water Sewer Distr water safe to drink? ▼
Hebgen Lake Estates Co Water Sewer Distr (PWS ID: MT0001983) has 709 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 230 people using Groundwater sources.
How many people does Hebgen Lake Estates Co Water Sewer Distr serve? ▼
Hebgen Lake Estates Co Water Sewer Distr serves 230 people in West Yellowstone, Montana. It is a Local-owned system using Groundwater water sources with 94 service connections.
What type of violations does Hebgen Lake Estates Co Water Sewer Distr have? ▼
Hebgen Lake Estates Co Water Sewer Distr has 709 total violations: 0 health-based violations (MCL exceedances or treatment failures), 706 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hebgen Lake Estates Co Water Sewer Distr water? ▼
No PFAS testing data is available for Hebgen Lake Estates Co Water Sewer Distr under the EPA's UCMR5 monitoring program.
What water source does Hebgen Lake Estates Co Water Sewer Distr use? ▼
Hebgen Lake Estates Co Water Sewer Distr 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.