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ST. JOSEPH THE WORKER SCHOOL

PWS ID: MI2004237 · MT PLEASANT, Michigan 48858

ST. JOSEPH THE WORKER SCHOOL serves 135 people in MT PLEASANT, Michigan using Groundwater water sources. It has 83 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: ST. JOSEPH THE WORKER SCHOOL

ST. JOSEPH THE WORKER SCHOOL is a private-owned non-transient non-community water system that delivers drinking water to 135 residents in MT PLEASANT, Michigan (Isabella County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 83 total violations for this system , of which 3 (4%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 70 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Arsenic, recorded in 11 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 Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. ST. JOSEPH THE WORKER SCHOOL's 83 violations sit above the Michigan average. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%). 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
135
Total Violations
83
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Isabella
School/Daycare
Yes
MCL Violations
3
Monitoring Violations
70
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MR 11 2023
Revised Total Coliform Rule MON 7 2023
Nitrate MR 5 2015
Lead and Copper Rule MR 5 2020
Arsenic MCL 3 2008
Coliform (TCR) MR 2 2013
BHC-GAMMA MR 2 1999
Toxaphene MR 2 1999
Simazine MR 2 1999
Dinoseb MR 2 1999
Hexachlorocyclopentadiene MR 2 1999
Heptachlor MR 2 1999
Heptachlor epoxide MR 2 1999
2,4-D MR 2 1999
2,4,5-TP MR 2 1999
HEXACHLOROBENZENE MR 2 1999
Pentachlorophenol MR 2 1999
Chlordane MR 2 1999
LASSO MR 2 1999
Endrin MR 2 1999
Picloram MR 2 1999
Carbofuran MR 2 1999
OXAMYL MR 2 1999
Atrazine MR 2 1999
Methoxychlor MR 2 1999
Total Polychlorinated Biphenyls (PCB) MR 2 1999

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 THE WORKER 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 MI2004237 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Michigan Drinking Water Authority

Michigan EGLE — Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects ST. JOSEPH THE WORKER SCHOOL under EPA-delegated authority.

Open MI regulator portal

Source: Michigan EGLE — Drinking Water and Environmental Health Division

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
2023 Arsenic MR 11 SDWIS / MI2004237 / 1005
2023 Revised Total Coliform Rule MON 7 SDWIS / MI2004237 / 8000
2020 Lead and Copper Rule MR 5 SDWIS / MI2004237 / 5000
2015 Nitrate MR 5 SDWIS / MI2004237 / 1040
2013 Coliform (TCR) MR 2 SDWIS / MI2004237 / 3100
2008 Arsenic MCL 3 SDWIS / MI2004237 / 1005
1999 BHC-GAMMA MR 2 SDWIS / MI2004237 / 2010
1999 Toxaphene MR 2 SDWIS / MI2004237 / 2020
1999 Simazine MR 2 SDWIS / MI2004237 / 2037
1999 Dinoseb MR 2 SDWIS / MI2004237 / 2041
1999 Hexachlorocyclopentadiene MR 2 SDWIS / MI2004237 / 2042
1999 Heptachlor MR 2 SDWIS / MI2004237 / 2065
1999 Heptachlor epoxide MR 2 SDWIS / MI2004237 / 2067
1999 2,4-D MR 2 SDWIS / MI2004237 / 2105
1999 2,4,5-TP MR 2 SDWIS / MI2004237 / 2110

How ST. JOSEPH THE WORKER SCHOOL Compares

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

Metric ST. JOSEPH THE WORKER SCHOOL Michigan avg Federal benchmark
Total violations 83 23.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 3 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 27.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 135 830 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is ST. JOSEPH THE WORKER SCHOOL water safe to drink? ▼
ST. JOSEPH THE WORKER SCHOOL (PWS ID: MI2004237) has 83 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 135 people using Groundwater sources.
How many people does ST. JOSEPH THE WORKER SCHOOL serve? ▼
ST. JOSEPH THE WORKER SCHOOL serves 135 people in MT PLEASANT, Michigan. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does ST. JOSEPH THE WORKER SCHOOL have? ▼
ST. JOSEPH THE WORKER SCHOOL has 83 total violations: 3 health-based violations (MCL exceedances or treatment failures), 70 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 THE WORKER SCHOOL water? ▼
No PFAS testing data is available for ST. JOSEPH THE WORKER SCHOOL under the EPA's UCMR5 monitoring program.
What water source does ST. JOSEPH THE WORKER SCHOOL use? ▼
ST. JOSEPH THE WORKER 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.

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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.

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