Public water system · IL3162743
ActiveNuestro Queso - Exterior Well
At a glance
Nuestro Queso - Exterior Well (PWSID IL3162743) is an active non-transient non-community water system in Stephenson County, Illinois. It reports serving 91 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 February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
91
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Nuestro Queso - Exterior Well compare with other water systems in Stephenson County?
By EPA's size categories, Nuestro Queso - Exterior Well is a very small system (500 people or fewer). Stephenson County has 42 active public water systems. Its population served is well below the county average of 811 people per system, and accounts for 0.3% of the 34,049 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Nuestro Queso - Exterior Well is well below 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. Illinois has 396 active non-transient non-community water systems, 10% 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 Nuestro Queso - Exterior Well?
EPA lists Nuestro Queso - Exterior Well 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. 29 of the 42 active systems in Stephenson County (69%) are also privately owned.
Does Nuestro Queso - Exterior Well have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2026. The violations listed here began between October 2022 and February 2026. By type: 8 monitoring and reporting, 2 public notice, recordkeeping or other and 2 monitoring. The contaminant or rule involved most often is Chlorine (3 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2026-02-26 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2024-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-01-24 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-02-15 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Resolved |
| 2022-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Nuestro Queso - Exterior Well: frequently asked questions
Who runs Nuestro Queso - Exterior Well?
Nuestro Queso - Exterior Well (PWSID IL3162743) is a non-transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Nuestro Queso - Exterior Well serve?
Nuestro Queso - Exterior Well reports serving 91 people through 1 service connection in Stephenson County, Illinois.
Where does Nuestro Queso - Exterior Well 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 Nuestro Queso - Exterior Well 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 February 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 Nuestro Queso - Exterior Well'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 February 2026. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Nuestro Queso - Exterior Well's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Nuestro Queso - Exterior Well 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 Stephenson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Freeport | Stephenson | 23,930 | Community | Groundwater |
| Lena | Stephenson | 2,680 | Community | Groundwater |
| Pearl City | Stephenson | 790 | Community | Groundwater |
| Orangeville | Stephenson | 780 | Community | Groundwater |
| Cedarville | Stephenson | 663 | Community | Groundwater |
| Prairie Path Water Company-Northern Hill | Stephenson | 600 | 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, “Nuestro Queso - Exterior Well, PWSID IL3162743, Illinois”, https://aquacensus.com/water-systems/illinois/nuestro-queso-exterior-well-il3162743 (data as of October 1, 2026).