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Community Water System · PWS MT0004209

Ledgewood Estates

Bigfork, Montana 59911 - drinking water served from groundwater sources to 35 people, tracked in EPA SDWIS and UCMR5.

35
People served
345
EPA violations
21
Health-based
Untested
UCMR5 result

The verdict

EPA records 345 drinking-water violations at Ledgewood Estates, 6% of them health-based - above the Montana per-system average.

345
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
35
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ledgewood Estates

Ledgewood Estates is a private-owned community water system that delivers drinking water to 35 residents in Bigfork, Montana (Flathead County) through 14 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 345 total violations for this system , of which 21 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 324 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 Coliform (TCR), recorded in 21 violations (MCL, health-based). 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%).

Ledgewood Estates's 345 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
35
Total Violations
345
Health-Based Violations
21
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
14
County
Flathead
School/Daycare
No
MCL Violations
21
Monitoring Violations
324
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 21 2004
Revised Total Coliform Rule MON 9 2024
Endrin MR 6 2018
BHC-GAMMA MR 6 2018
Methoxychlor MR 6 2018
Toxaphene MR 6 2018
Dalapon MR 6 2018
Di(2-ethylhexyl) adipate MR 6 2018
OXAMYL MR 6 2018
Picloram MR 6 2018
Hexachlorocyclopentadiene MR 6 2018
Carbofuran MR 6 2018
Heptachlor MR 6 2018
2,4-D MR 6 2018
2,4,5-TP MR 6 2018
HEXACHLOROBENZENE MR 6 2018
Benzo(a)pyrene MR 6 2018
Pentachlorophenol MR 6 2018
Chlordane MR 6 2018
Di(2-ethylhexyl) phthalate MR 6 2018
Dinoseb MR 6 2018
Atrazine MR 6 2018
Simazine MR 6 2018
Heptachlor epoxide MR 6 2018
LASSO MR 6 2018
o-Dichlorobenzene MR 5 2020
p-Dichlorobenzene MR 5 2020
Vinyl chloride MR 5 2020
1,1-Dichloroethylene MR 5 2020
trans-1,2-Dichloroethylene MR 5 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 Ledgewood Estates.

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 MT0004209 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 9 SDWIS / MT0004209 / 8000
2020 o-Dichlorobenzene MR 5 SDWIS / MT0004209 / 2968
2020 p-Dichlorobenzene MR 5 SDWIS / MT0004209 / 2969
2020 Vinyl chloride MR 5 SDWIS / MT0004209 / 2976
2020 1,1-Dichloroethylene MR 5 SDWIS / MT0004209 / 2977
2020 trans-1,2-Dichloroethylene MR 5 SDWIS / MT0004209 / 2979
2020 1,2-Dichloroethane MR 5 SDWIS / MT0004209 / 2980
2020 1,1,1-Trichloroethane MR 5 SDWIS / MT0004209 / 2981
2020 1,1,2-Trichloroethane MR 5 SDWIS / MT0004209 / 2985
2020 Tetrachloroethylene MR 5 SDWIS / MT0004209 / 2987
2020 Ethylbenzene MR 5 SDWIS / MT0004209 / 2992
2020 Styrene MR 5 SDWIS / MT0004209 / 2996
2020 1,2,4-Trichlorobenzene MR 5 SDWIS / MT0004209 / 2378
2020 cis-1,2-Dichloroethylene MR 5 SDWIS / MT0004209 / 2380
2020 Xylenes, Total MR 5 SDWIS / MT0004209 / 2955

How Ledgewood Estates Compares

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

Metric Ledgewood Estates Montana avg Federal benchmark
Total violations 345 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 21 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 35 492 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 Ledgewood Estates water safe to drink? ▼
Ledgewood Estates (PWS ID: MT0004209) has 345 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 35 people using Groundwater sources.
How many people does Ledgewood Estates serve? ▼
Ledgewood Estates serves 35 people in Bigfork, Montana. It is a Private-owned system using Groundwater water sources with 14 service connections.
What type of violations does Ledgewood Estates have? ▼
Ledgewood Estates has 345 total violations: 21 health-based violations (MCL exceedances or treatment failures), 324 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ledgewood Estates water? ▼
No PFAS testing data is available for Ledgewood Estates under the EPA's UCMR5 monitoring program.
What water source does Ledgewood Estates use? ▼
Ledgewood Estates 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.