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Community Water System · PWS MT0000449

Greenwood Trailer Court

Missoula, Montana 59808 - drinking water served from groundwater sources to 53 people, tracked in EPA SDWIS and UCMR5.

53
People served
302
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 302 drinking-water violations at Greenwood Trailer Court, 1% of them health-based - above the Montana per-system average.

302
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
53
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Greenwood Trailer Court

Greenwood Trailer Court is a private-owned community water system that delivers drinking water to 53 residents in Missoula, Montana (Missoula County) through 21 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 302 total violations for this system , of which 4 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 292 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is 2,4,5-TP, recorded in 22 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, 5 of 45 UCMR5-tested systems have reported PFAS detections (11.1%).

Greenwood Trailer Court's 302 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
53
Total Violations
302
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
21
County
Missoula
School/Daycare
No
MCL Violations
1
Monitoring Violations
292
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
2,4,5-TP MR 22 2020
Di(2-ethylhexyl) phthalate MR 17 2009
Coliform (TCR) MR 13 2008
Nitrate-Nitrite MR 9 2008
Consumer Confidence Rule Other 5 2008
cis-1,2-Dichloroethylene MR 4 1999
Xylenes, Total MR 4 1999
p-Dichlorobenzene MR 4 1999
Vinyl chloride MR 4 1999
1,1-Dichloroethylene MR 4 1999
1,2-Dichloroethane MR 4 1999
1,2-Dichloropropane MR 4 1999
Trichloroethylene MR 4 1999
1,1,2-Trichloroethane MR 4 1999
Tetrachloroethylene MR 4 1999
CHLOROBENZENE MR 4 1999
Toluene MR 4 1999
Ethylbenzene MR 4 1999
Endrin MR 4 1999
Methoxychlor MR 4 1999
Dalapon MR 4 1999
Endothall MR 4 1999
Glyphosate MR 4 1999
Picloram MR 4 1999
Aldicarb sulfone MR 4 1999
Carbofuran MR 4 1999
Atrazine MR 4 1999
LASSO MR 4 1999
Heptachlor MR 4 1999
Heptachlor epoxide MR 4 1999

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 Greenwood Trailer Court.

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 MT0000449 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
2022 Revised Total Coliform Rule TT 3 SDWIS / MT0000449 / 8000
2020 2,4,5-TP MR 22 SDWIS / MT0000449 / 2110
2009 Di(2-ethylhexyl) phthalate MR 17 SDWIS / MT0000449 / 2039
2008 Coliform (TCR) MR 13 SDWIS / MT0000449 / 3100
2008 Nitrate-Nitrite MR 9 SDWIS / MT0000449 / 1038
2008 Consumer Confidence Rule Other 5 SDWIS / MT0000449 / 7000
2004 Lead and Copper Rule MR 3 SDWIS / MT0000449 / 5000
1999 cis-1,2-Dichloroethylene MR 4 SDWIS / MT0000449 / 2380
1999 Xylenes, Total MR 4 SDWIS / MT0000449 / 2955
1999 p-Dichlorobenzene MR 4 SDWIS / MT0000449 / 2969
1999 Vinyl chloride MR 4 SDWIS / MT0000449 / 2976
1999 1,1-Dichloroethylene MR 4 SDWIS / MT0000449 / 2977
1999 1,2-Dichloroethane MR 4 SDWIS / MT0000449 / 2980
1999 1,2-Dichloropropane MR 4 SDWIS / MT0000449 / 2983
1999 Trichloroethylene MR 4 SDWIS / MT0000449 / 2984

How Greenwood Trailer Court Compares

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

Metric Greenwood Trailer Court Montana avg Federal benchmark
Total violations 302 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 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 53 492 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 Greenwood Trailer Court water safe to drink? ▼
Greenwood Trailer Court (PWS ID: MT0000449) has 302 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 53 people using Groundwater sources.
How many people does Greenwood Trailer Court serve? ▼
Greenwood Trailer Court serves 53 people in Missoula, Montana. It is a Private-owned system using Groundwater water sources with 21 service connections.
What type of violations does Greenwood Trailer Court have? ▼
Greenwood Trailer Court has 302 total violations: 4 health-based violations (MCL exceedances or treatment failures), 292 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Greenwood Trailer Court water? ▼
No PFAS testing data is available for Greenwood Trailer Court under the EPA's UCMR5 monitoring program.
What water source does Greenwood Trailer Court use? ▼
Greenwood Trailer Court 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.