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Community Water System · PWS WI7370158

Deer Trail Village

Mosinee, Wisconsin 54455 - drinking water served from groundwater sources to 120 people, tracked in EPA SDWIS and UCMR5.

120
People served
399
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 399 drinking-water violations at Deer Trail Village - above the Wisconsin per-system average.

399
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
120
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Deer Trail Village

Deer Trail Village is a private-owned community water system that delivers drinking water to 120 residents in Mosinee, Wisconsin (Marathon County) through 44 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 399 total violations for this system , of which 1 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 380 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 Revised Total Coliform Rule, recorded in 25 violations (MON). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Deer Trail Village's 399 violations sit above the Wisconsin 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
120
Total Violations
399
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
44
County
Marathon
School/Daycare
No
MCL Violations
0
Monitoring Violations
380
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 25 2025
Lead and Copper Rule MR 16 2025
Coliform (TCR) MR 15 2011
Consumer Confidence Rule Other 11 2025
Vinyl chloride MR 8 2000
Carbon tetrachloride MR 8 2000
Benzene MR 8 2000
Toluene MR 8 2000
Ethylbenzene MR 8 2000
o-Dichlorobenzene MR 8 2000
trans-1,2-Dichloroethylene MR 8 2000
CHLOROBENZENE MR 8 2000
Styrene MR 8 2000
1,2,4-Trichlorobenzene MR 8 2000
1,1,2-Trichloroethane MR 8 2000
Trichloroethylene MR 8 2000
1,1,1-Trichloroethane MR 8 2000
1,2-Dichloroethane MR 8 2000
1,1-Dichloroethylene MR 8 2000
DICHLOROMETHANE MR 8 2000
Xylenes, Total MR 8 2000
cis-1,2-Dichloroethylene MR 8 2000
1,2-Dichloropropane MR 8 2000
p-Dichlorobenzene MR 8 2000
Tetrachloroethylene MR 8 2000
Cadmium MR 4 2000
Antimony, Total MR 4 2000
Mercury MR 4 2000
Chromium MR 4 2000
Nitrite MR 4 2000

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 Deer Trail Village.

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 WI7370158 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Deer Trail Village under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

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 Revised Total Coliform Rule MON 25 SDWIS / WI7370158 / 8000
2025 Lead and Copper Rule MR 16 SDWIS / WI7370158 / 5000
2025 Consumer Confidence Rule Other 11 SDWIS / WI7370158 / 7000
2024 E. COLI MR 4 SDWIS / WI7370158 / 3014
2024 Public Notice Other 4 SDWIS / WI7370158 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI7370158 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / WI7370158 / 5200
2023 Nitrate MR 4 SDWIS / WI7370158 / 1040
2011 Coliform (TCR) MR 15 SDWIS / WI7370158 / 3100
2000 Vinyl chloride MR 8 SDWIS / WI7370158 / 2976
2000 Carbon tetrachloride MR 8 SDWIS / WI7370158 / 2982
2000 Benzene MR 8 SDWIS / WI7370158 / 2990
2000 Toluene MR 8 SDWIS / WI7370158 / 2991
2000 Ethylbenzene MR 8 SDWIS / WI7370158 / 2992
2000 o-Dichlorobenzene MR 8 SDWIS / WI7370158 / 2968

How Deer Trail Village Compares

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

Metric Deer Trail Village Wisconsin avg Federal benchmark
Total violations 399 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 120 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

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 Deer Trail Village water safe to drink? ▼
Deer Trail Village (PWS ID: WI7370158) has 399 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 120 people using Groundwater sources.
How many people does Deer Trail Village serve? ▼
Deer Trail Village serves 120 people in Mosinee, Wisconsin. It is a Private-owned system using Groundwater water sources with 44 service connections.
What type of violations does Deer Trail Village have? ▼
Deer Trail Village has 399 total violations: 1 health-based violations (MCL exceedances or treatment failures), 380 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Deer Trail Village water? ▼
No PFAS testing data is available for Deer Trail Village under the EPA's UCMR5 monitoring program.
What water source does Deer Trail Village use? ▼
Deer Trail Village 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.