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Transient Non-Community Water System · PWS MT0004079

Whitewater Inn

Big Sky, Montana 59716 - drinking water served from groundwater sources to 125 people, tracked in EPA SDWIS and UCMR5.

125
People served
192
EPA violations
45
Health-based
Untested
UCMR5 result

The verdict

EPA records 192 drinking-water violations at Whitewater Inn, 23% of them health-based - above the Montana per-system average.

192
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
125
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Whitewater Inn

Whitewater Inn is a private-owned transient non-community water system that delivers drinking water to 125 residents in Big Sky, Montana (Gallatin County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 192 total violations for this system , of which 45 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 147 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 102 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%).

Whitewater Inn's 192 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
125
Total Violations
192
Health-Based Violations
45
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Gallatin
School/Daycare
No
MCL Violations
42
Monitoring Violations
147
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 102 2011
Coliform (TCR) MCL 42 2008
Nitrate-Nitrite MR 22 2015
Groundwater Rule MR 14 2024
Revised Total Coliform Rule MON 6 2021
E. COLI MR 3 2011
Groundwater Rule TT 3 2025

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 Whitewater Inn.

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 MT0004079 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 Groundwater Rule TT 3 SDWIS / MT0004079 / 0700
2024 Groundwater Rule MR 14 SDWIS / MT0004079 / 0700
2021 Revised Total Coliform Rule MON 6 SDWIS / MT0004079 / 8000
2015 Nitrate-Nitrite MR 22 SDWIS / MT0004079 / 1038
2011 Coliform (TCR) MR 102 SDWIS / MT0004079 / 3100
2011 E. COLI MR 3 SDWIS / MT0004079 / 3014
2008 Coliform (TCR) MCL 42 SDWIS / MT0004079 / 3100

How Whitewater Inn Compares

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

Metric Whitewater Inn Montana avg Federal benchmark
Total violations 192 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 45 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 125 492 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 Whitewater Inn water safe to drink? ▼
Whitewater Inn (PWS ID: MT0004079) has 192 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 125 people using Groundwater sources.
How many people does Whitewater Inn serve? ▼
Whitewater Inn serves 125 people in Big Sky, Montana. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Whitewater Inn have? ▼
Whitewater Inn has 192 total violations: 45 health-based violations (MCL exceedances or treatment failures), 147 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Whitewater Inn water? ▼
No PFAS testing data is available for Whitewater Inn under the EPA's UCMR5 monitoring program.
What water source does Whitewater Inn use? ▼
Whitewater Inn uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.