Public water system · IL3136556
ActiveSt Mary'S Slovenian Catholic Center
At a glance
St Mary'S Slovenian Catholic Center (PWSID IL3136556) is an active transient non-community water system in Cook County, Illinois. It reports serving 400 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does St Mary'S Slovenian Catholic Center compare with other water systems in Cook County?
By EPA's size categories, St Mary'S Slovenian Catholic Center is a very small system (500 people or fewer). Cook County has 251 active public water systems. Its population served is well below the county average of 20,993 people per system, and accounts for less than 0.1% of the 5,269,212 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active transient non-community water system reports serving 144 people, so St Mary'S Slovenian Catholic Center is about 178% above that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Illinois has 1,703 active transient non-community water systems, 44% of the state's 3,872 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates St Mary'S Slovenian Catholic Center?
EPA lists St Mary'S Slovenian Catholic Center as privately owned. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 108 of the 251 active systems in Cook County (43%) are also privately owned.
Does St Mary'S Slovenian Catholic Center have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2019. The violations listed here began between October 1998 and January 2019. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1998-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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.
St Mary'S Slovenian Catholic Center: frequently asked questions
Who runs St Mary'S Slovenian Catholic Center?
St Mary'S Slovenian Catholic Center (PWSID IL3136556) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does St Mary'S Slovenian Catholic Center serve?
St Mary'S Slovenian Catholic Center reports serving 400 people through 1 service connection in Cook County, Illinois.
Where does St Mary'S Slovenian Catholic Center 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 St Mary'S Slovenian Catholic Center have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2019. 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 St Mary'S Slovenian Catholic Center'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 3 violations for this system; none is health-based, and the most recent began in January 2019. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find St Mary'S Slovenian Catholic Center's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. St Mary'S Slovenian Catholic Center is a 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 Cook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Chicago | Cook | 2,721,308 | Community | Surface water |
| Cicero | Cook | 83,000 | Community | Purchased surface water |
| Schaumburg | Cook | 75,750 | Community | Purchased surface water |
| Evanston | Cook | 74,486 | Community | Surface water |
| Arlington Heights | Cook | 73,320 | Community | Purchased surface water |
| Palatine | Cook | 70,875 | Community | Purchased surface water |
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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, “St Mary'S Slovenian Catholic Center, PWSID IL3136556, Illinois”, https://aquacensus.com/water-systems/illinois/st-mary-s-slovenian-catholic-center-il3136556 (data as of October 1, 2026).