Public water system · IL0130010
ActiveCalhoun County Rwd
At a glance
Calhoun County Rwd (PWSID IL0130010) is an active community water system in Calhoun County, Illinois. It reports serving 4,675 people through 1,771 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in September 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,675
Service connections
1,771
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Calhoun County Rwd compare with other water systems in Calhoun County?
By EPA's size categories, Calhoun County Rwd is a medium system (3,301 to 10,000 people). Calhoun County has 6 active public water systems, and Calhoun County Rwd is the largest of them by population served. Its population served is about 4.5 times the county average of 1,038 people per system, and accounts for 75% of the 6,230 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 Calhoun County Rwd is about 30% 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 Calhoun County Rwd?
EPA lists Calhoun County Rwd 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. 4 of the 6 active systems in Calhoun County (67%) are also owned by a local government.
Does Calhoun County Rwd have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in September 2020. The violations listed here began between January 2002 and September 2020. By type: 6 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Chlorine (3 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2020-09-08 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2020-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2007-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-06-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
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.
Calhoun County Rwd: frequently asked questions
Who runs Calhoun County Rwd?
Calhoun County Rwd (PWSID IL0130010) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Calhoun County Rwd serve?
Calhoun County Rwd reports serving 4,675 people through 1,771 service connections in Calhoun County, Illinois.
Where does Calhoun County Rwd 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 Calhoun County Rwd have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in September 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 Calhoun County Rwd'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; 1 is health-based, and the most recent began in September 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Calhoun County Rwd's water quality report?
As a community water system, Calhoun County Rwd 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 Calhoun County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Hardin | Calhoun | 839 | Community | Groundwater |
| Kampsville | Calhoun | 335 | Community | Groundwater |
| Batchtown | Calhoun | 220 | Community | Groundwater |
| Brussels | Calhoun | 136 | Community | Groundwater |
| Alton Woodriver Sportsmans Clb | Calhoun | 25 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Calhoun County Rwd, PWSID IL0130010, Illinois”, https://aquacensus.com/water-systems/illinois/calhoun-county-rwd-il0130010 (data as of October 1, 2026).