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Community Water System · PWS MT0000437

Westview Mobile Home Park

Missoula, Montana 59802 - drinking water served from groundwater sources to 947 people, tracked in EPA SDWIS and UCMR5.

947
People served
2,111
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 2,111 drinking-water violations at Westview Mobile Home Park - above the Montana per-system average.

2,111
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
947
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Westview Mobile Home Park

Westview Mobile Home Park is a private-owned community water system that delivers drinking water to 947 residents in Missoula, Montana (Missoula County) through 383 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 2,111 total violations for this system , of which 3 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 2,104 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 1,2,4-Trichlorobenzene, recorded in 58 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%).

Westview Mobile Home Park's 2,111 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
947
Total Violations
2,111
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
383
County
Missoula
School/Daycare
No
MCL Violations
0
Monitoring Violations
2,104
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 58 2020
Xylenes, Total MR 58 2020
DICHLOROMETHANE MR 58 2020
o-Dichlorobenzene MR 58 2020
p-Dichlorobenzene MR 58 2020
trans-1,2-Dichloroethylene MR 58 2020
1,1,1-Trichloroethane MR 58 2020
Carbon tetrachloride MR 58 2020
1,2-Dichloropropane MR 58 2020
Trichloroethylene MR 58 2020
1,1,2-Trichloroethane MR 58 2020
Tetrachloroethylene MR 58 2020
Benzene MR 58 2020
Ethylbenzene MR 58 2020
cis-1,2-Dichloroethylene MR 58 2020
Vinyl chloride MR 58 2020
1,1-Dichloroethylene MR 58 2020
1,2-Dichloroethane MR 58 2020
CHLOROBENZENE MR 58 2020
Toluene MR 58 2020
Styrene MR 58 2020
BHC-GAMMA MR 30 2020
Methoxychlor MR 30 2020
Dalapon MR 30 2020
Di(2-ethylhexyl) adipate MR 30 2020
OXAMYL MR 30 2020
Dinoseb MR 30 2020
Hexachlorocyclopentadiene MR 30 2020
Heptachlor epoxide MR 30 2020
HEXACHLOROBENZENE MR 30 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 Westview Mobile Home Park.

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 MT0000437 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 1,2,4-Trichlorobenzene MR 58 SDWIS / MT0000437 / 2378
2020 Xylenes, Total MR 58 SDWIS / MT0000437 / 2955
2020 DICHLOROMETHANE MR 58 SDWIS / MT0000437 / 2964
2020 o-Dichlorobenzene MR 58 SDWIS / MT0000437 / 2968
2020 p-Dichlorobenzene MR 58 SDWIS / MT0000437 / 2969
2020 trans-1,2-Dichloroethylene MR 58 SDWIS / MT0000437 / 2979
2020 1,1,1-Trichloroethane MR 58 SDWIS / MT0000437 / 2981
2020 Carbon tetrachloride MR 58 SDWIS / MT0000437 / 2982
2020 1,2-Dichloropropane MR 58 SDWIS / MT0000437 / 2983
2020 Trichloroethylene MR 58 SDWIS / MT0000437 / 2984
2020 1,1,2-Trichloroethane MR 58 SDWIS / MT0000437 / 2985
2020 Tetrachloroethylene MR 58 SDWIS / MT0000437 / 2987
2020 Benzene MR 58 SDWIS / MT0000437 / 2990
2020 Ethylbenzene MR 58 SDWIS / MT0000437 / 2992
2020 cis-1,2-Dichloroethylene MR 58 SDWIS / MT0000437 / 2380

How Westview Mobile Home Park Compares

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

Metric Westview Mobile Home Park Montana avg Federal benchmark
Total violations 2,111 131.4 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 947 492 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 Westview Mobile Home Park water safe to drink? ▼
Westview Mobile Home Park (PWS ID: MT0000437) has 2111 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 947 people using Groundwater sources.
How many people does Westview Mobile Home Park serve? ▼
Westview Mobile Home Park serves 947 people in Missoula, Montana. It is a Private-owned system using Groundwater water sources with 383 service connections.
What type of violations does Westview Mobile Home Park have? ▼
Westview Mobile Home Park has 2,111 total violations: 3 health-based violations (MCL exceedances or treatment failures), 2,104 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Westview Mobile Home Park water? ▼
No PFAS testing data is available for Westview Mobile Home Park under the EPA's UCMR5 monitoring program.
What water source does Westview Mobile Home Park use? ▼
Westview Mobile Home Park 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.