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Non-Transient Non-Community Water System · PWS MT0002903

Four Corners Business Park

Bozeman, Montana 59718 - drinking water served from groundwater sources to 200 people, tracked in EPA SDWIS and UCMR5.

200
People served
313
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 313 drinking-water violations at Four Corners Business Park - above the Montana per-system average.

313
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
200
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Four Corners Business Park

Four Corners Business Park is a private-owned non-transient non-community water system that delivers drinking water to 200 residents in Bozeman, Montana (Gallatin County) through 36 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 313 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 313 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 Lead and Copper Rule, recorded in 195 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%).

Four Corners Business Park's 313 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
200
Total Violations
313
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
36
County
Gallatin
School/Daycare
No
MCL Violations
0
Monitoring Violations
313
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 195 2024
Coliform (TCR) MR 19 2000
Nitrate MR 9 1994
Antimony, Total MR 6 2014
cis-1,2-Dichloroethylene MR 3 2005
DICHLOROMETHANE MR 3 2005
o-Dichlorobenzene MR 3 2005
p-Dichlorobenzene MR 3 2005
1,2-Dichloroethane MR 3 2005
Carbon tetrachloride MR 3 2005
Trichloroethylene MR 3 2005
Toluene MR 3 2005
CYANIDE MR 3 2020
Diquat MR 3 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2020
1,1-Dichloroethylene MR 3 2005
1,1,2-Trichloroethane MR 3 2005
Endothall MR 3 2020
ETHYLENE DIBROMIDE MR 3 2020
Vinyl chloride MR 3 2005
Ethylbenzene MR 3 2005
Tetrachloroethylene MR 3 2005
1,2-Dichloropropane MR 3 2005
Xylenes, Total MR 3 2005
Benzene MR 3 2005
1,2,4-Trichlorobenzene MR 3 2005
CHLOROBENZENE MR 3 2005
trans-1,2-Dichloroethylene MR 3 2005
Glyphosate MR 3 2020
Styrene MR 3 2005

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 Four Corners Business 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 MT0002903 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 195 SDWIS / MT0002903 / 5000
2020 CYANIDE MR 3 SDWIS / MT0002903 / 1024
2020 Diquat MR 3 SDWIS / MT0002903 / 2032
2020 1,2-DIBROMO-3-CHLOROPROPANE MR 3 SDWIS / MT0002903 / 2931
2020 Endothall MR 3 SDWIS / MT0002903 / 2033
2020 ETHYLENE DIBROMIDE MR 3 SDWIS / MT0002903 / 2946
2020 Glyphosate MR 3 SDWIS / MT0002903 / 2034
2020 Total Polychlorinated Biphenyls (PCB) MR 3 SDWIS / MT0002903 / 2383
2014 Antimony, Total MR 6 SDWIS / MT0002903 / 1074
2005 cis-1,2-Dichloroethylene MR 3 SDWIS / MT0002903 / 2380
2005 DICHLOROMETHANE MR 3 SDWIS / MT0002903 / 2964
2005 o-Dichlorobenzene MR 3 SDWIS / MT0002903 / 2968
2005 p-Dichlorobenzene MR 3 SDWIS / MT0002903 / 2969
2005 1,2-Dichloroethane MR 3 SDWIS / MT0002903 / 2980
2005 Carbon tetrachloride MR 3 SDWIS / MT0002903 / 2982

How Four Corners Business Park Compares

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

Metric Four Corners Business Park Montana avg Federal benchmark
Total violations 313 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 200 492 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 Four Corners Business Park water safe to drink? ▼
Four Corners Business Park (PWS ID: MT0002903) has 313 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 200 people using Groundwater sources.
How many people does Four Corners Business Park serve? ▼
Four Corners Business Park serves 200 people in Bozeman, Montana. It is a Private-owned system using Groundwater water sources with 36 service connections.
What type of violations does Four Corners Business Park have? ▼
Four Corners Business Park has 313 total violations: 0 health-based violations (MCL exceedances or treatment failures), 313 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Four Corners Business Park water? ▼
No PFAS testing data is available for Four Corners Business Park under the EPA's UCMR5 monitoring program.
What water source does Four Corners Business Park use? ▼
Four Corners Business Park 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.