Public water system · IL1010300
ActiveSumner
At a glance
Sumner (PWSID IL1010300) is an active community water system in Lawrence County, Illinois. It reports serving 921 people through 494 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 6 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
921
Service connections
494
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Sumner compare with other water systems in Lawrence County?
By EPA's size categories, Sumner is a small system (501 to 3,300 people). Lawrence County has 14 active public water systems, and Sumner is the 5th-largest of them by population served. Its population served is roughly in line with the county average of 969 people per system, and accounts for 6.8% of the 13,565 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 Sumner is well 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.
Who owns and regulates Sumner?
EPA lists Sumner 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. 6 of the 14 active systems in Lawrence County (43%) are also owned by a local government.
Does Sumner have drinking water violations?
EPA's records list 11 violations for this system; 6 are health-based, and the most recent began in July 2025. The violations listed here began between August 1994 and July 2025. By type: 6 contaminant level above the legal limit, 4 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Nitrate (4 of them). EPA lists 7 as resolved, 3 as archived and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2010-08-01 | Public notice, recordkeeping or otherFailure to Notify Other PWS · code 73 | Groundwater Rulecode 0700 | No | Resolved |
| 2006-08-23 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2005-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 2001-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1999-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1994-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1994-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 11 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.
Sumner: frequently asked questions
Who runs Sumner?
Sumner (PWSID IL1010300) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Sumner serve?
Sumner reports serving 921 people through 494 service connections in Lawrence County, Illinois.
Where does Sumner get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Sumner have any drinking water violations?
EPA's records list 11 violations for this system; 6 are health-based, and the most recent began in July 2025. 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 Sumner'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 11 violations for this system; 6 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Sumner's water quality report?
As a community water system, Sumner 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 Lawrence County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lawrenceville | Lawrence | 4,524 | Community | Groundwater |
| Bridgeport | Lawrence | 2,572 | Community | Groundwater |
| Petrolia PWD | Lawrence | 1,275 | Community | Purchased groundwater |
| South Lawrence Water Corp | Lawrence | 1,195 | Community | Purchased groundwater |
| Birds Pinkstaff Water District | Lawrence | 920 | Community | Purchased groundwater |
| Lawrence County Correctional Center | Lawrence | 870 | Community | Purchased 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, “Sumner, PWSID IL1010300, Illinois”, https://aquacensus.com/water-systems/illinois/sumner-il1010300 (data as of October 1, 2026).