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Community Water System · PWS WI6320318

St Joseph San Dist 1

La Crosse, Wisconsin 54601 - drinking water served from groundwater sources to 503 people, tracked in EPA SDWIS and UCMR5.

503
People served
61
EPA violations
14
Health-based
Untested
UCMR5 result

The verdict

EPA records 61 drinking-water violations at St Joseph San Dist 1, 23% of them health-based - above the Wisconsin per-system average.

61
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
503
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: St Joseph San Dist 1

St Joseph San Dist 1 is a local-owned community water system that delivers drinking water to 503 residents in La Crosse, Wisconsin (La Crosse County) through 122 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 61 total violations for this system , of which 14 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 16 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 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%).

St Joseph San Dist 1's 61 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
503
Total Violations
61
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
122
County
La Crosse
School/Daycare
No
MCL Violations
14
Monitoring Violations
42
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 16 2013
Coliform (TCR) MCL 14 2011
Chlorine MR 8 2013
TTHM MR 8 2019
Total Haloacetic Acids (HAA5) MR 8 2019
Groundwater Rule Other 4 2019
Lead and Copper Rule MR 2 2021

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 St Joseph San Dist 1.

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 WI6320318 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 St Joseph San Dist 1 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
2021 Lead and Copper Rule MR 2 SDWIS / WI6320318 / 5000
2019 TTHM MR 8 SDWIS / WI6320318 / 2950
2019 Total Haloacetic Acids (HAA5) MR 8 SDWIS / WI6320318 / 2456
2019 Groundwater Rule Other 4 SDWIS / WI6320318 / 0700
2013 Coliform (TCR) MR 16 SDWIS / WI6320318 / 3100
2013 Chlorine MR 8 SDWIS / WI6320318 / 0999
2011 Coliform (TCR) MCL 14 SDWIS / WI6320318 / 3100

How St Joseph San Dist 1 Compares

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

Metric St Joseph San Dist 1 Wisconsin avg Federal benchmark
Total violations 61 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 14 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 503 467 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 St Joseph San Dist 1 water safe to drink? ▼
St Joseph San Dist 1 (PWS ID: WI6320318) has 61 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 503 people using Groundwater sources.
How many people does St Joseph San Dist 1 serve? ▼
St Joseph San Dist 1 serves 503 people in La Crosse, Wisconsin. It is a Local-owned system using Groundwater water sources with 122 service connections.
What type of violations does St Joseph San Dist 1 have? ▼
St Joseph San Dist 1 has 61 total violations: 14 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in St Joseph San Dist 1 water? ▼
No PFAS testing data is available for St Joseph San Dist 1 under the EPA's UCMR5 monitoring program.
What water source does St Joseph San Dist 1 use? ▼
St Joseph San Dist 1 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.