Public water system · IN5271009
ActiveMishawaka Utilities
At a glance
Mishawaka Utilities (PWSID IN5271009) is an active community water system in St. Joseph County, Indiana. It reports serving 49,675 people through 17,457 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
49,675
Service connections
17,457
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mishawaka Utilities compare with other water systems in St. Joseph County?
By EPA's size categories, Mishawaka Utilities is a large system (10,001 to 100,000 people). St. Joseph County has 221 active public water systems, and Mishawaka Utilities is the 2nd-largest of them by population served. Its population served is about 50 times the county average of 989 people per system, and accounts for 23% of the 218,558 people reported by systems filed under the county. Across Indiana, the 3,969 active systems average 1,456 people each. Nationally, the average active community water system reports serving 6,703 people, so Mishawaka Utilities is about 7.4 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Indiana has 770 active community water systems, 19% of the state's 3,969 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,769 Indiana systems (95%) list groundwater as their primary source.
Who owns and regulates Mishawaka Utilities?
EPA lists Mishawaka Utilities as owned by a local government. The IN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 21 of the 221 active systems in St. Joseph County (9.5%) are also owned by a local government.
Does Mishawaka Utilities have drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in July 2025. The violations listed here began between October 1979 and July 2025. By type: 3 monitoring and reporting, 3 contaminant level above the legal limit, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 6 as resolved, 2 as archived and 1 as unaddressed. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2010-11-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2010-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1980-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
All 9 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Mishawaka Utilities: frequently asked questions
Who runs Mishawaka Utilities?
Mishawaka Utilities (PWSID IN5271009) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Mishawaka Utilities serve?
Mishawaka Utilities reports serving 49,675 people through 17,457 service connections in St. Joseph County, Indiana.
Where does Mishawaka Utilities get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Mishawaka Utilities have any drinking water violations?
EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in July 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Mishawaka Utilities' water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Mishawaka Utilities' water quality report?
As a community water system, Mishawaka Utilities must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in St. Joseph County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| South Bend Water Works | St. Joseph | 115,000 | Community | Groundwater |
| University of Notre Dame | St. Joseph | 7,400 | Community | Groundwater |
| Walkerton Light & Water | St. Joseph | 2,262 | Community | Groundwater |
| Sisters of Holy Cross-St. Marys College | St. Joseph | 2,111 | Community | Groundwater |
| North Liberty Water Works | St. Joseph | 1,896 | Community | Groundwater |
| New Carlisle Water Works | St. Joseph | 1,861 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Mishawaka Utilities, PWSID IN5271009, Indiana”, https://aquacensus.com/water-systems/indiana/mishawaka-utilities-in5271009 (data as of October 1, 2026).