Public water system · IL3020636
ActiveOne More at Oak Hill
At a glance
One More at Oak Hill (PWSID IL3020636) is an active transient non-community water system in Peoria 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 8 violations for this system; 5 are health-based, and the most recent began in January 2009.
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 One More at Oak Hill compare with other water systems in Peoria County?
By EPA's size categories, One More at Oak Hill is a very small system (500 people or fewer). Peoria County has 66 active public water systems. Its population served is well below the county average of 2,857 people per system, and accounts for less than 0.1% of the 188,545 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 One More at Oak Hill 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 One More at Oak Hill?
EPA lists One More at Oak Hill 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. 48 of the 66 active systems in Peoria County (73%) are also privately owned.
Does One More at Oak Hill have drinking water violations?
EPA's records list 8 violations for this system; 5 are health-based, and the most recent began in January 2009. The violations listed here began between July 1989 and January 2009. By type: 5 contaminant level above the legal limit and 3 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 6 as resolved and 2 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. 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 |
|---|---|---|---|---|
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2006-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1989-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 8 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.
One More at Oak Hill: frequently asked questions
Who runs One More at Oak Hill?
One More at Oak Hill (PWSID IL3020636) is a transient non-community water system privately owned. It is regulated by the IL state drinking water program.
How many people does One More at Oak Hill serve?
One More at Oak Hill reports serving 100 people through 1 service connection in Peoria County, Illinois.
Where does One More at Oak Hill 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 One More at Oak Hill have any drinking water violations?
EPA's records list 8 violations for this system; 5 are health-based, and the most recent began in January 2009. 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 One More at Oak Hill'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 8 violations for this system; 5 are health-based, and the most recent began in January 2009. For current results, consult EPA ECHO, or the IL state drinking water program.
Where can I find One More at Oak Hill's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. One More at Oak Hill 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 Peoria County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Peoria | Peoria | 137,575 | Community | Surface water |
| Osf St Francis Hospital | Peoria | 10,000 | Non-transient non-community | Purchased surface water |
| Chillicothe | Peoria | 6,660 | Community | Groundwater |
| Peoria Heights | Peoria | 5,908 | Community | Groundwater |
| Pleasant Valley PWD | Peoria | 3,783 | Community | Groundwater |
| Cat Mossville | Peoria | 3,000 | Non-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, “One More at Oak Hill, PWSID IL3020636, Illinois”, https://aquacensus.com/water-systems/illinois/one-more-at-oak-hill-il3020636 (data as of October 1, 2026).