Public water system · IL1214220
ActiveCentralia
At a glance
Centralia (PWSID IL1214220) is an active community water system in Marion County, Illinois. It reports serving 12,182 people through 5,900 service connections. Its primary water source is surface water, 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 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
12,182
Service connections
5,900
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Centralia compare with other water systems in Marion County?
By EPA's size categories, Centralia is a large system (10,001 to 100,000 people). Marion County has 18 active public water systems, and Centralia is the largest of them by population served. Its population served is about 5.1 times the county average of 2,372 people per system, and accounts for 29% of the 42,699 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 Centralia is about 82% above 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 89 Illinois systems (2.3%) list surface water as their primary source.
Who owns and regulates Centralia?
EPA lists Centralia 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. 11 of the 18 active systems in Marion County (61%) are also owned by a local government.
Does Centralia have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2024. The violations listed here began between June 1977 and July 2024. By type: 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Public Notice, Haloacetic acids (HAA5), Chloramine and Gross alpha (excluding radon and uranium). 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 |
|---|---|---|---|---|
| 2024-07-11 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloraminecode 1006 | 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.
Centralia: frequently asked questions
Who runs Centralia?
Centralia (PWSID IL1214220) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Centralia serve?
Centralia reports serving 12,182 people through 5,900 service connections in Marion County, Illinois.
Where does Centralia get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Centralia 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 2024. 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 Centralia'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 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Centralia's water quality report?
As a community water system, Centralia 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 Marion County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Salem | Marion | 7,905 | Community | Surface water |
| Raccoon Water Company | Marion | 7,080 | Community | Purchased surface water |
| North East Marion County Water Cmpny | Marion | 3,220 | Community | Purchased surface water |
| Fmc Water Company | Marion | 2,945 | Community | Purchased surface water |
| Odin | Marion | 2,543 | Community | Purchased surface water |
| Sandoval | Marion | 1,422 | Community | Purchased surface water |
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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, “Centralia, PWSID IL1214220, Illinois”, https://aquacensus.com/water-systems/illinois/centralia-il1214220 (data as of October 1, 2026).