Public water system · IL0550450
ActiveSesser
At a glance
Sesser (PWSID IL0550450) is an active community water system in Franklin County, Illinois. It reports serving 2,556 people through 1,022 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,556
Service connections
1,022
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Sesser compare with other water systems in Franklin County?
By EPA's size categories, Sesser is a small system (501 to 3,300 people). Franklin County has 23 active public water systems, and Sesser is the 5th-largest of them by population served. Its population served is about 37% above the county average of 1,860 people per system, and accounts for 6% of the 42,771 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 Sesser is about 62% 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 619 Illinois systems (16%) list purchased surface water as their primary source.
Who owns and regulates Sesser?
EPA lists Sesser 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. 21 of the 23 active systems in Franklin County (91%) are also owned by a local government.
Does Sesser have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2023. The violations listed here began between January 1997 and October 2023. By type: 5 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as resolved and 2 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 |
|---|---|---|---|---|
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2021-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloraminecode 1006 | No | Resolved |
| 2007-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1997-01-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 6 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.
Sesser: frequently asked questions
Who runs Sesser?
Sesser (PWSID IL0550450) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Sesser serve?
Sesser reports serving 2,556 people through 1,022 service connections in Franklin County, Illinois.
Where does Sesser get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Sesser have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in October 2023. 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 Sesser'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 6 violations for this system; none is health-based, and the most recent began in October 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Sesser's water quality report?
As a community water system, Sesser 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 Franklin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| West Frankfort | Franklin | 8,650 | Community | Purchased surface water |
| Benton | Franklin | 8,104 | Community | Purchased surface water |
| Rend Lake Inter-City Water System | Franklin | 3,650 | Community | Surface water |
| Christopher | Franklin | 3,072 | Community | Purchased surface water |
| Greenwood-Creek Nation Water Company | Franklin | 2,530 | Community | Purchased surface water |
| Ewing-Ina Water Commission | Franklin | 2,393 | 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, “Sesser, PWSID IL0550450, Illinois”, https://aquacensus.com/water-systems/illinois/sesser-il0550450 (data as of October 1, 2026).