Public water system · IL3116889
ActiveTimbrook Field City of Colona
At a glance
Timbrook Field City of Colona (PWSID IL3116889) is an active transient non-community water system in Henry County, Illinois. It reports serving 100 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in January 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
100
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Timbrook Field City of Colona compare with other water systems in Henry County?
By EPA's size categories, Timbrook Field City of Colona is a very small system (500 people or fewer). Henry County has 72 active public water systems. Its population served is well below the county average of 598 people per system, and accounts for 0.2% of the 43,076 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 Timbrook Field City of Colona 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 Timbrook Field City of Colona?
EPA lists Timbrook Field City of Colona as owned by a local government. 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. 18 of the 72 active systems in Henry County (25%) are also owned by a local government.
Does Timbrook Field City of Colona have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in January 2022. The violations listed here began between July 1988 and January 2022. By type: 1 monitoring, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as archived and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2022-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1988-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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.
Timbrook Field City of Colona: frequently asked questions
Who runs Timbrook Field City of Colona?
Timbrook Field City of Colona (PWSID IL3116889) is a transient non-community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Timbrook Field City of Colona serve?
Timbrook Field City of Colona reports serving 100 people through 3 service connections in Henry County, Illinois.
Where does Timbrook Field City of Colona 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 Timbrook Field City of Colona have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in January 2022. 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 Timbrook Field City of Colona'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 3 violations for this system; 1 is health-based, and the most recent began in January 2022. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find Timbrook Field City of Colona's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Timbrook Field City of Colona 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 Henry County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Kewanee | Henry | 12,509 | Community | Groundwater |
| Geneseo | Henry | 6,539 | Community | Groundwater |
| Colona West | Henry | 2,640 | Community | Groundwater |
| Colona East | Henry | 2,501 | Community | Groundwater |
| Galva | Henry | 2,449 | Community | Groundwater |
| Cambridge | Henry | 2,086 | 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, “Timbrook Field City of Colona, PWSID IL3116889, Illinois”, https://aquacensus.com/water-systems/illinois/timbrook-field-city-of-colona-il3116889 (data as of October 1, 2026).