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States → Montana

Non-Transient Non-Community Water System · PWS MT0002844

Swan River School Dist 04

Bigfork, Montana 59911 - drinking water served from groundwater sources to 197 people, tracked in EPA SDWIS and UCMR5.

197
People served
78
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 78 drinking-water violations at Swan River School Dist 04, 4% of them health-based - below the Montana per-system average.

78
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
197
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Swan River School Dist 04

Swan River School Dist 04 is a local-owned non-transient non-community water system that delivers drinking water to 197 residents in Bigfork, Montana (Flathead County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 78 total violations for this system , of which 3 (4%) 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 2020.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 7 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%).

Swan River School Dist 04's 78 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
197
Total Violations
78
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
2
County
Flathead
School/Daycare
Yes
MCL Violations
3
Monitoring Violations
73
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 7 2006
1,2,4-Trichlorobenzene MR 3 2001
Xylenes, Total MR 3 2001
o-Dichlorobenzene MR 3 2001
p-Dichlorobenzene MR 3 2001
Vinyl chloride MR 3 2001
1,1,1-Trichloroethane MR 3 2001
1,2-Dichloropropane MR 3 2001
Tetrachloroethylene MR 3 2001
Benzene MR 3 2001
Toluene MR 3 2001
Ethylbenzene MR 3 2001
Styrene MR 3 2001
CHLOROBENZENE MR 3 2001
Asbestos MR 3 2020
Coliform (TCR) MCL 3 1996
1,1,2-Trichloroethane MR 3 2001
1,2-Dichloroethane MR 3 2001
Carbon tetrachloride MR 3 2001
DICHLOROMETHANE MR 3 2001
Trichloroethylene MR 3 2001
1,1-Dichloroethylene MR 3 2001
trans-1,2-Dichloroethylene MR 3 2001
cis-1,2-Dichloroethylene MR 3 2001

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 Swan River School Dist 04.

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 MT0002844 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
2020 Asbestos MR 3 SDWIS / MT0002844 / 1094
2006 Coliform (TCR) MR 7 SDWIS / MT0002844 / 3100
2001 1,2,4-Trichlorobenzene MR 3 SDWIS / MT0002844 / 2378
2001 Xylenes, Total MR 3 SDWIS / MT0002844 / 2955
2001 o-Dichlorobenzene MR 3 SDWIS / MT0002844 / 2968
2001 p-Dichlorobenzene MR 3 SDWIS / MT0002844 / 2969
2001 Vinyl chloride MR 3 SDWIS / MT0002844 / 2976
2001 1,1,1-Trichloroethane MR 3 SDWIS / MT0002844 / 2981
2001 1,2-Dichloropropane MR 3 SDWIS / MT0002844 / 2983
2001 Tetrachloroethylene MR 3 SDWIS / MT0002844 / 2987
2001 Benzene MR 3 SDWIS / MT0002844 / 2990
2001 Toluene MR 3 SDWIS / MT0002844 / 2991
2001 Ethylbenzene MR 3 SDWIS / MT0002844 / 2992
2001 Styrene MR 3 SDWIS / MT0002844 / 2996
2001 CHLOROBENZENE MR 3 SDWIS / MT0002844 / 2989

How Swan River School Dist 04 Compares

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

Metric Swan River School Dist 04 Montana avg Federal benchmark
Total violations 78 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 197 492 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 Swan River School Dist 04 water safe to drink? ▼
Swan River School Dist 04 (PWS ID: MT0002844) has 78 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 197 people using Groundwater sources.
How many people does Swan River School Dist 04 serve? ▼
Swan River School Dist 04 serves 197 people in Bigfork, Montana. It is a Local-owned system using Groundwater water sources with 2 service connections.
What type of violations does Swan River School Dist 04 have? ▼
Swan River School Dist 04 has 78 total violations: 3 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 Swan River School Dist 04 water? ▼
No PFAS testing data is available for Swan River School Dist 04 under the EPA's UCMR5 monitoring program.
What water source does Swan River School Dist 04 use? ▼
Swan River School Dist 04 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.