Public water system · IL3137794
ActiveI-39 Shell Express
At a glance
I-39 Shell Express (PWSID IL3137794) is an active transient non-community water system in Winnebago County, Illinois. It reports serving 500 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
500
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does I-39 Shell Express compare with other water systems in Winnebago County?
By EPA's size categories, I-39 Shell Express is a very small system (500 people or fewer). Winnebago County has 137 active public water systems. Its population served is well below the county average of 1,841 people per system, and accounts for 0.2% of the 252,201 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 I-39 Shell Express is about 3.5 times 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 I-39 Shell Express?
EPA lists I-39 Shell Express 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. 102 of the 137 active systems in Winnebago County (74%) are also privately owned.
Does I-39 Shell Express have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2020. The violations listed here began between January 2018 and January 2020. By type: 3 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 4 as resolved. 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 |
|---|---|---|---|---|
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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 |
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.
I-39 Shell Express: frequently asked questions
Who runs I-39 Shell Express?
I-39 Shell Express (PWSID IL3137794) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does I-39 Shell Express serve?
I-39 Shell Express reports serving 500 people through 1 service connection in Winnebago County, Illinois.
Where does I-39 Shell Express 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 I-39 Shell Express have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in January 2020. 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 I-39 Shell Express' 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; none is health-based, and the most recent began in January 2020. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find I-39 Shell Express' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. I-39 Shell Express 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 Winnebago County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rockford | Winnebago | 147,051 | Community | Groundwater |
| North Park PWD | Winnebago | 35,580 | Community | Groundwater |
| Loves Park | Winnebago | 23,335 | Community | Groundwater |
| Il American-South Beloit | Winnebago | 7,893 | Community | Purchased groundwater |
| Rockton | Winnebago | 7,685 | Community | Groundwater |
| Cherry Valley | Winnebago | 4,731 | 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, “I-39 Shell Express, PWSID IL3137794, Illinois”, https://aquacensus.com/water-systems/illinois/i-39-shell-express-il3137794 (data as of October 1, 2026).