Public water system · IL3137901
ActiveBig Rock Cafe
At a glance
Big Rock Cafe (PWSID IL3137901) is an active transient non-community water system in Kane County, Illinois. It reports serving 100 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Big Rock Cafe compare with other water systems in Kane County?
By EPA's size categories, Big Rock Cafe is a very small system (500 people or fewer). Kane County has 118 active public water systems. Its population served is well below the county average of 4,933 people per system, and accounts for less than 0.1% of the 582,054 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 Big Rock Cafe is about 31% 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 Big Rock Cafe?
EPA lists Big Rock Cafe 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. 63 of the 118 active systems in Kane County (53%) are also privately owned.
Does Big Rock Cafe have drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in January 2025. The violations listed here began between January 2009 and January 2025. By type: 7 monitoring and reporting, 2 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (6 of them). EPA lists 7 as resolved, 2 as unaddressed 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-01-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2023-02-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 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 10 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.
Big Rock Cafe: frequently asked questions
Who runs Big Rock Cafe?
Big Rock Cafe (PWSID IL3137901) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Big Rock Cafe serve?
Big Rock Cafe reports serving 100 people through 1 service connection in Kane County, Illinois.
Where does Big Rock Cafe 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 Big Rock Cafe have any drinking water violations?
EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in January 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 Big Rock Cafe'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 10 violations for this system; 1 is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Big Rock Cafe's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Big Rock Cafe 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 Kane County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aurora | Kane | 183,000 | Community | Surface water |
| Elgin | Kane | 114,797 | Community | Surface water |
| Carpentersville | Kane | 37,983 | Community | Groundwater |
| St Charles | Kane | 33,103 | Community | Groundwater |
| Montgomery | Kane | 28,956 | Community | Groundwater |
| Batavia | Kane | 26,098 | 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, “Big Rock Cafe, PWSID IL3137901, Illinois”, https://aquacensus.com/water-systems/illinois/big-rock-cafe-il3137901 (data as of October 1, 2026).