Public water system · IL1970900
ActiveRomeoville
At a glance
Romeoville (PWSID IL1970900) is an active community water system in Will County, Illinois. It reports serving 50,458 people through 16,743 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50,458
Service connections
16,743
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Romeoville compare with other water systems in Will County?
By EPA's size categories, Romeoville is a large system (10,001 to 100,000 people). Will County has 236 active public water systems, and Romeoville is the 3rd-largest of them by population served. Its population served is about 19 times the county average of 2,607 people per system, and accounts for 8.2% of the 615,219 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 Romeoville is about 7.5 times 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 Romeoville?
EPA lists Romeoville 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. 34 of the 236 active systems in Will County (14%) are also owned by a local government.
Does Romeoville have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2014. The violations listed here began between January 2014 and January 2014. By type: 12 monitoring and reporting. The contaminants or rules involved are Ethylene dibromide (EDB), Hexachlorobenzene, Endothall and Carbofuran. EPA lists 12 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 |
|---|---|---|---|---|
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylene dibromide (EDB)code 2946 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
The 12 most recent 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.
Romeoville: frequently asked questions
Who runs Romeoville?
Romeoville (PWSID IL1970900) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Romeoville serve?
Romeoville reports serving 50,458 people through 16,743 service connections in Will County, Illinois.
Where does Romeoville 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 Romeoville have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2014. 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 Romeoville'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Romeoville's water quality report?
As a community water system, Romeoville 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 Will County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Joliet | Will | 160,000 | Community | Groundwater |
| Il American-West Suburban | Will | 73,978 | Community | Purchased surface water |
| Plainfield | Will | 50,000 | Community | Purchased surface water |
| New Lenox | Will | 27,690 | Community | Purchased surface water |
| Il American-Homer Township | Will | 24,543 | Community | Purchased surface water |
| Frankfort | Will | 24,000 | 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, “Romeoville, PWSID IL1970900, Illinois”, https://aquacensus.com/water-systems/illinois/romeoville-il1970900 (data as of October 1, 2026).