Public water system · IN2710900
ActiveGranger St. (Martins Supermrk & Oscos)
At a glance
Granger St. (Martins Supermrk & Oscos) (PWSID IN2710900) is an active non-transient non-community water system in St. Joseph County, Indiana. It reports serving 880 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
880
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Granger St. (Martins Supermrk & Oscos) compare with other water systems in St. Joseph County?
By EPA's size categories, Granger St. (Martins Supermrk & Oscos) is a small system (501 to 3,300 people). St. Joseph County has 221 active public water systems. Its population served is about 11% below the county average of 989 people per system, and accounts for 0.4% 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 non-transient non-community water system reports serving 430 people, so Granger St. (Martins Supermrk & Oscos) is about twice that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Indiana has 603 active non-transient non-community water systems, 15% 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 Granger St. (Martins Supermrk & Oscos)?
EPA lists Granger St. (Martins Supermrk & Oscos) as privately owned. 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. 199 of the 221 active systems in St. Joseph County (90%) are also privately owned.
Does Granger St. (Martins Supermrk & Oscos) have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in April 2025. The violations listed here began between April 2005 and April 2025. By type: 4 monitoring and reporting and 1 monitoring. The contaminants or rules involved are E. coli, Revised Total Coliform Rule, Lead and Copper Rule and Arsenic. EPA lists 5 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-04-27 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2024-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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.
Granger St. (Martins Supermrk & Oscos): frequently asked questions
Who runs Granger St. (Martins Supermrk & Oscos)?
Granger St. (Martins Supermrk & Oscos) (PWSID IN2710900) is a non-transient non-community water system privately owned. It is regulated by the IN state drinking water program.
How many people does Granger St. (Martins Supermrk & Oscos) serve?
Granger St. (Martins Supermrk & Oscos) reports serving 880 people through 3 service connections in St. Joseph County, Indiana.
Where does Granger St. (Martins Supermrk & Oscos) 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 Granger St. (Martins Supermrk & Oscos) have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in April 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 Granger St. (Martins Supermrk & Oscos)'s 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 5 violations for this system; none is health-based, and the most recent began in April 2025. For current results, consult EPA ECHO, or the IN state drinking water program.
Where can I find Granger St. (Martins Supermrk & Oscos)'s water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Granger St. (Martins Supermrk & Oscos) is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in St. Joseph County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| South Bend Water Works | St. Joseph | 115,000 | Community | Groundwater |
| Mishawaka Utilities | St. Joseph | 49,675 | 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 |
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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, “Granger St. (Martins Supermrk & Oscos), PWSID IN2710900, Indiana”, https://aquacensus.com/water-systems/indiana/granger-st-martins-supermrk-oscos-in2710900 (data as of October 1, 2026).