Public water system · IL1890300
ActiveNashville
At a glance
Nashville (PWSID IL1890300) is an active community water system in Washington County, Illinois. It reports serving 3,230 people through 1,619 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; 2 are health-based, and the most recent began in June 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,230
Service connections
1,619
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Nashville compare with other water systems in Washington County?
By EPA's size categories, Nashville is a small system (501 to 3,300 people). Washington County has 15 active public water systems, and Nashville is the 2nd-largest of them by population served. Its population served is about 136% above the county average of 1,367 people per system, and accounts for 16% of the 20,507 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 Nashville is about half of 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 Nashville?
EPA lists Nashville 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. 9 of the 15 active systems in Washington County (60%) are also owned by a local government.
Does Nashville have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in June 1994. The violations listed here began between June 1977 and June 1994. By type: 2 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as archived. 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 |
|---|---|---|---|---|
| 1994-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1991-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 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.
Nashville: frequently asked questions
Who runs Nashville?
Nashville (PWSID IL1890300) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Nashville serve?
Nashville reports serving 3,230 people through 1,619 service connections in Washington County, Illinois.
Where does Nashville 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 Nashville have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in June 1994. 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 Nashville'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; 2 are health-based, and the most recent began in June 1994. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Nashville's water quality report?
As a community water system, Nashville 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washington County Water Company | Washington | 11,374 | Community | Purchased surface water |
| Okawville | Washington | 1,457 | Community | Purchased surface water |
| Irvington | Washington | 1,081 | Community | Purchased surface water |
| Hoyleton Rwc | Washington | 1,020 | Community | Purchased surface water |
| Hoyleton | Washington | 658 | Community | Purchased surface water |
| Ashley | Washington | 565 | Community | Purchased surface water |
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, “Nashville, PWSID IL1890300, Illinois”, https://aquacensus.com/water-systems/illinois/nashville-il1890300 (data as of October 1, 2026).