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Non-Transient Non-Community Water System · PWS WI1281013

St Pauls Lutheran School

Ixonia, Wisconsin 53036-9718 - drinking water served from groundwater sources to 117 people, tracked in EPA SDWIS and UCMR5.

117
People served
80
EPA violations
16
Health-based
Untested
UCMR5 result

The verdict

EPA records 80 drinking-water violations at St Pauls Lutheran School, 20% of them health-based - above the Wisconsin per-system average.

80
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
117
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: St Pauls Lutheran School

St Pauls Lutheran School is a private-owned non-transient non-community water system that delivers drinking water to 117 residents in Ixonia, Wisconsin (Jefferson County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 80 total violations for this system , of which 16 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 64 monitoring and reporting violations are on file. The most recent violation on record dates to 2014.

The most frequently cited contaminant at this system is Di(2-ethylhexyl) phthalate, recorded in 11 violations (MCL, 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, 51 of 202 UCMR5-tested systems have reported PFAS detections (25.2%).

St Pauls Lutheran School's 80 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
117
Total Violations
80
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Jefferson
School/Daycare
Yes
MCL Violations
16
Monitoring Violations
64
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Di(2-ethylhexyl) phthalate MCL 11 2014
Coliform (TCR) MCL 5 2007
Lead and Copper Rule MR 4 2013
Nitrite MR 4 1998
Chromium MR 4 1998
Cadmium MR 4 1998
Barium MR 4 1998
Arsenic MR 4 1998
Nitrate MR 4 1998
Thallium, Total MR 4 1998
Selenium MR 4 1998
Fluoride MR 4 1998
Di(2-ethylhexyl) phthalate MR 4 2013
Nitrate-Nitrite MR 4 1998
Mercury MR 4 1998
Beryllium, Total MR 4 1998
Antimony, Total MR 4 1998
Nickel MR 4 1998

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 Pauls Lutheran School.

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 WI1281013 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 Pauls Lutheran School 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
2014 Di(2-ethylhexyl) phthalate MCL 11 SDWIS / WI1281013 / 2039
2013 Lead and Copper Rule MR 4 SDWIS / WI1281013 / 5000
2013 Di(2-ethylhexyl) phthalate MR 4 SDWIS / WI1281013 / 2039
2007 Coliform (TCR) MCL 5 SDWIS / WI1281013 / 3100
1998 Nitrite MR 4 SDWIS / WI1281013 / 1041
1998 Chromium MR 4 SDWIS / WI1281013 / 1020
1998 Cadmium MR 4 SDWIS / WI1281013 / 1015
1998 Barium MR 4 SDWIS / WI1281013 / 1010
1998 Arsenic MR 4 SDWIS / WI1281013 / 1005
1998 Nitrate MR 4 SDWIS / WI1281013 / 1040
1998 Thallium, Total MR 4 SDWIS / WI1281013 / 1085
1998 Selenium MR 4 SDWIS / WI1281013 / 1045
1998 Fluoride MR 4 SDWIS / WI1281013 / 1025
1998 Nitrate-Nitrite MR 4 SDWIS / WI1281013 / 1038
1998 Mercury MR 4 SDWIS / WI1281013 / 1035

How St Pauls Lutheran School Compares

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

Metric St Pauls Lutheran School Wisconsin avg Federal benchmark
Total violations 80 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 16 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 25.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 117 467 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 Pauls Lutheran School water safe to drink? ▼
St Pauls Lutheran School (PWS ID: WI1281013) has 80 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 117 people using Groundwater sources.
How many people does St Pauls Lutheran School serve? ▼
St Pauls Lutheran School serves 117 people in Ixonia, Wisconsin. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does St Pauls Lutheran School have? ▼
St Pauls Lutheran School has 80 total violations: 16 health-based violations (MCL exceedances or treatment failures), 64 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in St Pauls Lutheran School water? ▼
No PFAS testing data is available for St Pauls Lutheran School under the EPA's UCMR5 monitoring program.
What water source does St Pauls Lutheran School use? ▼
St Pauls Lutheran School 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.