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Community Water System · PWS MT0003911

Salish Shores Trade Winds Comm Village

Thompson Falls, Montana 59873-1030 - drinking water served from groundwater sources to 215 people, tracked in EPA SDWIS and UCMR5.

215
People served
102
EPA violations
29
Health-based
Untested
UCMR5 result

The verdict

EPA records 102 drinking-water violations at Salish Shores Trade Winds Comm Village, 28% of them health-based - below the Montana per-system average.

102
Total EPA violations on record
28%
Health-based (MCL / treatment failure)
215
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Salish Shores Trade Winds Comm Village

Salish Shores Trade Winds Comm Village is a private-owned community water system that delivers drinking water to 215 residents in Thompson Falls, Montana (Sanders County) through 168 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 102 total violations for this system , of which 29 (28%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 73 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 Arsenic, recorded in 29 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, 28 of 45 UCMR5-tested systems have reported PFAS detections (62.2%).

Salish Shores Trade Winds Comm Village's 102 violations sit below 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
215
Total Violations
102
Health-Based Violations
29
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
168
County
Sanders
School/Daycare
No
MCL Violations
29
Monitoring Violations
73
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 29 2012
Arsenic MR 15 2012
Coliform (TCR) MR 10 2015
Lead and Copper Rule MR 5 2015
Fluoride MR 4 2002
Antimony, Total MR 4 2002
Cadmium MR 4 2002
Chromium MR 4 2002
Thallium, Total MR 4 2002
Nickel MR 4 2002
Barium MR 4 2002
Mercury MR 4 2002
Selenium MR 4 2002
Beryllium, Total MR 4 2002
Nitrate-Nitrite MR 3 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 Salish Shores Trade Winds Comm Village.

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 MT0003911 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 Nitrate-Nitrite MR 3 SDWIS / MT0003911 / 1038
2015 Coliform (TCR) MR 10 SDWIS / MT0003911 / 3100
2015 Lead and Copper Rule MR 5 SDWIS / MT0003911 / 5000
2012 Arsenic MCL 29 SDWIS / MT0003911 / 1005
2012 Arsenic MR 15 SDWIS / MT0003911 / 1005
2002 Fluoride MR 4 SDWIS / MT0003911 / 1025
2002 Antimony, Total MR 4 SDWIS / MT0003911 / 1074
2002 Cadmium MR 4 SDWIS / MT0003911 / 1015
2002 Chromium MR 4 SDWIS / MT0003911 / 1020
2002 Thallium, Total MR 4 SDWIS / MT0003911 / 1085
2002 Nickel MR 4 SDWIS / MT0003911 / 1036
2002 Barium MR 4 SDWIS / MT0003911 / 1010
2002 Mercury MR 4 SDWIS / MT0003911 / 1035
2002 Selenium MR 4 SDWIS / MT0003911 / 1045
2002 Beryllium, Total MR 4 SDWIS / MT0003911 / 1075

How Salish Shores Trade Winds Comm Village Compares

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

Metric Salish Shores Trade Winds Comm Village Montana avg Federal benchmark
Total violations 102 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 29 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 215 492 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 Salish Shores Trade Winds Comm Village water safe to drink? ▼
Salish Shores Trade Winds Comm Village (PWS ID: MT0003911) has 102 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 215 people using Groundwater sources.
How many people does Salish Shores Trade Winds Comm Village serve? ▼
Salish Shores Trade Winds Comm Village serves 215 people in Thompson Falls, Montana. It is a Private-owned system using Groundwater water sources with 168 service connections.
What type of violations does Salish Shores Trade Winds Comm Village have? ▼
Salish Shores Trade Winds Comm Village has 102 total violations: 29 health-based violations (MCL exceedances or treatment failures), 73 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Salish Shores Trade Winds Comm Village water? ▼
No PFAS testing data is available for Salish Shores Trade Winds Comm Village under the EPA's UCMR5 monitoring program.
What water source does Salish Shores Trade Winds Comm Village use? ▼
Salish Shores Trade Winds Comm Village 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.