PlainWater
States → Wisconsin

Community Water System · PWS WI6320326

Town of Farmington Sanitary District

Mindoro, Wisconsin 54644 - drinking water served from groundwater sources to 275 people, tracked in EPA SDWIS and UCMR5.

275
People served
41
EPA violations
25
Health-based
Untested
UCMR5 result

The verdict

EPA records 41 drinking-water violations at Town of Farmington Sanitary District, 61% of them health-based - above the Wisconsin per-system average.

41
Total EPA violations on record
61%
Health-based (MCL / treatment failure)
275
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Town of Farmington Sanitary District

Town of Farmington Sanitary District is a local-owned community water system that delivers drinking water to 275 residents in Mindoro, Wisconsin (La Crosse County) through 117 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 41 total violations for this system , of which 25 (61%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 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 Groundwater Rule, recorded in 20 violations (TT, health-based). 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%).

Town of Farmington Sanitary District's 41 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
275
Total Violations
41
Health-Based Violations
25
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
117
County
La Crosse
School/Daycare
No
MCL Violations
4
Monitoring Violations
15
Treatment Tech Violations
21

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule TT 20 2017
Coliform (TCR) MCL 4 2004
Coliform (TCR) MR 4 2014
Chlorine MR 4 2014
Revised Total Coliform Rule MON 4 2024
Lead and Copper Rule MR 3 1993
Public Notice Other 1 2024
LEAD AND COPPER RULE REVISIONS TT 1 2024

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 Town of Farmington Sanitary District.

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 WI6320326 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 Town of Farmington Sanitary District 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
2024 Revised Total Coliform Rule MON 4 SDWIS / WI6320326 / 8000
2024 Public Notice Other 1 SDWIS / WI6320326 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / WI6320326 / 5200
2017 Groundwater Rule TT 20 SDWIS / WI6320326 / 0700
2014 Coliform (TCR) MR 4 SDWIS / WI6320326 / 3100
2014 Chlorine MR 4 SDWIS / WI6320326 / 0999
2004 Coliform (TCR) MCL 4 SDWIS / WI6320326 / 3100
1993 Lead and Copper Rule MR 3 SDWIS / WI6320326 / 5000

How Town of Farmington Sanitary District Compares

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

Metric Town of Farmington Sanitary District Wisconsin avg Federal benchmark
Total violations 41 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 25 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 275 467 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 Town of Farmington Sanitary District water safe to drink? ▼
Town of Farmington Sanitary District (PWS ID: WI6320326) has 41 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 275 people using Groundwater sources.
How many people does Town of Farmington Sanitary District serve? ▼
Town of Farmington Sanitary District serves 275 people in Mindoro, Wisconsin. It is a Local-owned system using Groundwater water sources with 117 service connections.
What type of violations does Town of Farmington Sanitary District have? ▼
Town of Farmington Sanitary District has 41 total violations: 25 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 21 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Town of Farmington Sanitary District water? ▼
No PFAS testing data is available for Town of Farmington Sanitary District under the EPA's UCMR5 monitoring program.
What water source does Town of Farmington Sanitary District use? ▼
Town of Farmington Sanitary District 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.