Public water system · IL0390250
ActiveWapella
At a glance
Wapella (PWSID IL0390250) is an active community water system in De Witt County, Illinois. It reports serving 513 people through 291 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
513
Service connections
291
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Wapella compare with other water systems in De Witt County?
By EPA's size categories, Wapella is a small system (501 to 3,300 people). De Witt County has 14 active public water systems, and Wapella is the 4th-largest of them by population served. Its population served is about 42% below the county average of 884 people per system, and accounts for 4.1% of the 12,370 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Wapella is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Illinois has 1,773 active community water systems, 46% 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 Wapella?
EPA lists Wapella 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. 7 of the 14 active systems in De Witt County (50%) are also owned by a local government.
Does Wapella have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2010. The violations listed here began between June 1977 and July 2010. By type: 4 monitoring and reporting. The contaminant or rule involved most often is Chlorine (2 of them). EPA lists 3 as resolved 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. 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 |
|---|---|---|---|---|
| 2010-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 1993-10-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
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.
Wapella: frequently asked questions
Who runs Wapella?
Wapella (PWSID IL0390250) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Wapella serve?
Wapella reports serving 513 people through 291 service connections in De Witt County, Illinois.
Where does Wapella 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 Wapella have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2010. 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 Wapella'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 4 violations for this system; none is health-based, and the most recent began in July 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Wapella's water quality report?
As a community water system, Wapella must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in De Witt County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clinton | De Witt | 7,200 | Community | Groundwater |
| Farmer City | De Witt | 1,811 | Community | Groundwater |
| Constellation Clinton Power Station | De Witt | 515 | Non-transient non-community | Surface water |
| Mascoutin Sra | De Witt | 500 | Transient non-community | Groundwater |
| Weldon | De Witt | 404 | Community | Groundwater |
| Kenney | De Witt | 400 | 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, “Wapella, PWSID IL0390250, Illinois”, https://aquacensus.com/water-systems/illinois/wapella-il0390250 (data as of October 1, 2026).