Public water system · IL3126367
ActiveOak Creek Tennis Club
At a glance
Oak Creek Tennis Club (PWSID IL3126367) is an active transient non-community water system in Kendall County, Illinois. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Oak Creek Tennis Club compare with other water systems in Kendall County?
By EPA's size categories, Oak Creek Tennis Club is a very small system (500 people or fewer). Kendall County has 47 active public water systems. Its population served is well below the county average of 1,747 people per system, and accounts for less than 0.1% of the 82,105 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 Oak Creek Tennis Club is well below 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 Oak Creek Tennis Club?
EPA lists Oak Creek Tennis Club 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. 33 of the 47 active systems in Kendall County (70%) are also privately owned.
Does Oak Creek Tennis Club have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026. The violations listed here began between January 2022 and March 2026. By type: 6 public notice, recordkeeping or other, 3 monitoring and 3 monitoring and reporting. The contaminant or rule involved most often is Public Notice (6 of them). EPA lists 6 as unaddressed and 6 as resolved. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2026-03-07 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-02-21 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-01-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-01-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-27 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-01-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
The 12 most recent 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.
Oak Creek Tennis Club: frequently asked questions
Who runs Oak Creek Tennis Club?
Oak Creek Tennis Club (PWSID IL3126367) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Oak Creek Tennis Club serve?
Oak Creek Tennis Club reports serving 25 people through 1 service connection in Kendall County, Illinois.
Where does Oak Creek Tennis Club 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 Oak Creek Tennis Club have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026. 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 Oak Creek Tennis Club'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Oak Creek Tennis Club's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oak Creek Tennis Club 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 Kendall County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Oswego | Kendall | 38,169 | Community | Groundwater |
| Yorkville | Kendall | 23,000 | Community | Groundwater |
| Plano | Kendall | 12,600 | Community | Groundwater |
| Il American-Valley Marina | Kendall | 1,102 | Community | Groundwater |
| Newark | Kendall | 986 | Community | Groundwater |
| Silver Springs State Park (94185) | Kendall | 750 | Transient non-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, “Oak Creek Tennis Club, PWSID IL3126367, Illinois”, https://aquacensus.com/water-systems/illinois/oak-creek-tennis-club-il3126367 (data as of October 1, 2026).