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Non-Transient Non-Community Water System · PWS MT0000763

Great Falls KOA Kampground

Great Falls, Montana 59405 - drinking water served from groundwater sources to 287 people, tracked in EPA SDWIS and UCMR5.

287
People served
564
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 564 drinking-water violations at Great Falls KOA Kampground, 2% of them health-based - above the Montana per-system average.

564
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
287
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Great Falls KOA Kampground

Great Falls KOA Kampground is a private-owned non-transient non-community water system that delivers drinking water to 287 residents in Great Falls, Montana (Cascade County) through 130 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 564 total violations for this system , of which 10 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 554 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Picloram, recorded in 21 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%).

Great Falls KOA Kampground's 564 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
287
Total Violations
564
Health-Based Violations
10
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
130
County
Cascade
School/Daycare
No
MCL Violations
6
Monitoring Violations
554
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Picloram MR 21 2020
1,2,4-Trichlorobenzene MR 19 2020
Xylenes, Total MR 19 2020
DICHLOROMETHANE MR 19 2020
o-Dichlorobenzene MR 19 2020
p-Dichlorobenzene MR 19 2020
trans-1,2-Dichloroethylene MR 19 2020
Carbon tetrachloride MR 19 2020
1,2-Dichloropropane MR 19 2020
Trichloroethylene MR 19 2020
Tetrachloroethylene MR 19 2020
CHLOROBENZENE MR 19 2020
Benzene MR 19 2020
Vinyl chloride MR 19 2020
1,1,1-Trichloroethane MR 19 2020
Toluene MR 19 2020
Ethylbenzene MR 19 2020
cis-1,2-Dichloroethylene MR 19 2020
1,1,2-Trichloroethane MR 19 2020
Styrene MR 19 2020
1,1-Dichloroethylene MR 19 2020
1,2-Dichloroethane MR 19 2020
Coliform (TCR) MR 10 2005
Coliform (TCR) MCL 6 2012
Lead and Copper Rule MR 5 2020
Nitrate MR 4 1999
E. COLI MR 4 2025
Groundwater Rule TT 4 2011
Endrin MR 3 2011
Methoxychlor MR 3 2011

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 Great Falls KOA Kampground.

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 MT0000763 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
2025 E. COLI MR 4 SDWIS / MT0000763 / 3014
2020 Picloram MR 21 SDWIS / MT0000763 / 2040
2020 1,2,4-Trichlorobenzene MR 19 SDWIS / MT0000763 / 2378
2020 Xylenes, Total MR 19 SDWIS / MT0000763 / 2955
2020 DICHLOROMETHANE MR 19 SDWIS / MT0000763 / 2964
2020 o-Dichlorobenzene MR 19 SDWIS / MT0000763 / 2968
2020 p-Dichlorobenzene MR 19 SDWIS / MT0000763 / 2969
2020 trans-1,2-Dichloroethylene MR 19 SDWIS / MT0000763 / 2979
2020 Carbon tetrachloride MR 19 SDWIS / MT0000763 / 2982
2020 1,2-Dichloropropane MR 19 SDWIS / MT0000763 / 2983
2020 Trichloroethylene MR 19 SDWIS / MT0000763 / 2984
2020 Tetrachloroethylene MR 19 SDWIS / MT0000763 / 2987
2020 CHLOROBENZENE MR 19 SDWIS / MT0000763 / 2989
2020 Benzene MR 19 SDWIS / MT0000763 / 2990
2020 Vinyl chloride MR 19 SDWIS / MT0000763 / 2976

How Great Falls KOA Kampground Compares

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

Metric Great Falls KOA Kampground Montana avg Federal benchmark
Total violations 564 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 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 287 492 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 Great Falls KOA Kampground water safe to drink? ▼
Great Falls KOA Kampground (PWS ID: MT0000763) has 564 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 287 people using Groundwater sources.
How many people does Great Falls KOA Kampground serve? ▼
Great Falls KOA Kampground serves 287 people in Great Falls, Montana. It is a Private-owned system using Groundwater water sources with 130 service connections.
What type of violations does Great Falls KOA Kampground have? ▼
Great Falls KOA Kampground has 564 total violations: 10 health-based violations (MCL exceedances or treatment failures), 554 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Great Falls KOA Kampground water? ▼
No PFAS testing data is available for Great Falls KOA Kampground under the EPA's UCMR5 monitoring program.
What water source does Great Falls KOA Kampground use? ▼
Great Falls KOA Kampground 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.