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Community Water System · PWS MT0000591

Forest Park Water Users Association

Clancy, Montana 59634 - drinking water served from groundwater sources to 323 people, tracked in EPA SDWIS and UCMR5.

323
People served
119
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 119 drinking-water violations at Forest Park Water Users Association, 6% of them health-based - below the Montana per-system average.

119
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
323
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Forest Park Water Users Association

Forest Park Water Users Association is a private-owned community water system that delivers drinking water to 323 residents in Clancy, Montana (Jefferson County) through 134 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 119 total violations for this system , of which 7 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 105 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 Chlorine, recorded in 18 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%).

Forest Park Water Users Association's 119 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
323
Total Violations
119
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
134
County
Jefferson
School/Daycare
No
MCL Violations
7
Monitoring Violations
105
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 18 2009
Di(2-ethylhexyl) phthalate MR 16 2017
TTHM MR 10 2019
Coliform (TCR) MCL 7 2000
Total Haloacetic Acids (HAA5) MR 6 2019
Lead and Copper Rule MR 6 2024
Coliform (TCR) MR 5 2001
Arsenic MR 3 2002
Barium MR 3 2002
Cadmium MR 3 2002
Chromium MR 3 2002
Fluoride MR 3 2002
Mercury MR 3 2002
Nickel MR 3 2002
Antimony, Total MR 3 2002
Thallium, Total MR 3 2002
Selenium MR 3 2002
Consumer Confidence Rule Other 3 2007
Combined Uranium MR 3 2011
Beryllium, Total MR 3 2002
Picloram MR 3 2013
Nitrate-Nitrite MR 3 2005
Nitrate MR 2 1994

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 Forest Park Water Users Association.

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 MT0000591 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 Lead and Copper Rule MR 6 SDWIS / MT0000591 / 5000
2019 TTHM MR 10 SDWIS / MT0000591 / 2950
2019 Total Haloacetic Acids (HAA5) MR 6 SDWIS / MT0000591 / 2456
2017 Di(2-ethylhexyl) phthalate MR 16 SDWIS / MT0000591 / 2039
2013 Picloram MR 3 SDWIS / MT0000591 / 2040
2011 Combined Uranium MR 3 SDWIS / MT0000591 / 4006
2009 Chlorine MR 18 SDWIS / MT0000591 / 0999
2007 Consumer Confidence Rule Other 3 SDWIS / MT0000591 / 7000
2005 Nitrate-Nitrite MR 3 SDWIS / MT0000591 / 1038
2002 Arsenic MR 3 SDWIS / MT0000591 / 1005
2002 Barium MR 3 SDWIS / MT0000591 / 1010
2002 Cadmium MR 3 SDWIS / MT0000591 / 1015
2002 Chromium MR 3 SDWIS / MT0000591 / 1020
2002 Fluoride MR 3 SDWIS / MT0000591 / 1025
2002 Mercury MR 3 SDWIS / MT0000591 / 1035

How Forest Park Water Users Association Compares

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

Metric Forest Park Water Users Association Montana avg Federal benchmark
Total violations 119 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 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 323 492 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 Forest Park Water Users Association water safe to drink? ▼
Forest Park Water Users Association (PWS ID: MT0000591) has 119 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 323 people using Groundwater sources.
How many people does Forest Park Water Users Association serve? ▼
Forest Park Water Users Association serves 323 people in Clancy, Montana. It is a Private-owned system using Groundwater water sources with 134 service connections.
What type of violations does Forest Park Water Users Association have? ▼
Forest Park Water Users Association has 119 total violations: 7 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Forest Park Water Users Association water? ▼
No PFAS testing data is available for Forest Park Water Users Association under the EPA's UCMR5 monitoring program.
What water source does Forest Park Water Users Association use? ▼
Forest Park Water Users Association 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.