Public water system · IL3114694
ActiveLos Contaros
At a glance
Los Contaros (PWSID IL3114694) is an active transient non-community water system in Will County, Illinois. It reports serving 75 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as under public/private ownership. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in March 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
75
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Los Contaros compare with other water systems in Will County?
By EPA's size categories, Los Contaros is a very small system (500 people or fewer). Will County has 236 active public water systems. Its population served is well below the county average of 2,607 people per system, and accounts for less than 0.1% of the 615,219 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 Los Contaros is about half of 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 Los Contaros?
EPA lists Los Contaros as under public/private ownership. 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. 34 of the 236 active systems in Will County (14%) are also under public/private ownership.
Does Los Contaros have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in March 2024. The violations listed here began between January 2009 and March 2024. By type: 1 public notice, recordkeeping or other, 1 monitoring, 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Public Notice, Revised Total Coliform Rule, Nitrite and Total coliform bacteria (TCR). EPA lists 3 as resolved and 1 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-03-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-02-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
| 2009-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 4 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.
Los Contaros: frequently asked questions
Who runs Los Contaros?
Los Contaros (PWSID IL3114694) is a transient non-community water system under public/private ownership. It is regulated by the IL state drinking water program.
How many people does Los Contaros serve?
Los Contaros reports serving 75 people through 1 service connection in Will County, Illinois.
Where does Los Contaros 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 Los Contaros have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in March 2024. 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 Los Contaros' 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 4 violations for this system; 1 is health-based, and the most recent began in March 2024. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Los Contaros' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Los Contaros 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 Will County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Joliet | Will | 160,000 | Community | Groundwater |
| Il American-West Suburban | Will | 73,978 | Community | Purchased surface water |
| Romeoville | Will | 50,458 | Community | Groundwater |
| Plainfield | Will | 50,000 | Community | Purchased surface water |
| New Lenox | Will | 27,690 | Community | Purchased surface water |
| Il American-Homer Township | Will | 24,543 | 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, “Los Contaros, PWSID IL3114694, Illinois”, https://aquacensus.com/water-systems/illinois/los-contaros-il3114694 (data as of October 1, 2026).