Public water system · IL0674300
ActiveDallas City
At a glance
Dallas City (PWSID IL0674300) is an active community water system in Hancock County, Illinois. It reports serving 788 people through 522 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
788
Service connections
522
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Dallas City compare with other water systems in Hancock County?
By EPA's size categories, Dallas City is a small system (501 to 3,300 people). Hancock County has 11 active public water systems, and Dallas City is the 6th-largest of them by population served. Its population served is about 27% below the county average of 1,077 people per system, and accounts for 6.6% of the 11,851 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 Dallas City 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 Dallas City?
EPA lists Dallas City 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. 11 of the 11 active systems in Hancock County (100%) are also owned by a local government.
Does Dallas City have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between June 1977 and July 2025. By type: 3 monitoring and reporting and 1 reporting. The contaminants or rules involved are Lead and Copper Rule Revisions, Surface Water Treatment Rule, Total coliform bacteria (TCR) and Gross alpha (excluding radon and uranium). EPA lists 3 as archived and 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 1994-09-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 1991-06-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | 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.
Dallas City: frequently asked questions
Who runs Dallas City?
Dallas City (PWSID IL0674300) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Dallas City serve?
Dallas City reports serving 788 people through 522 service connections in Hancock County, Illinois.
Where does Dallas City 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 Dallas City have any drinking water violations?
EPA's records list 4 violations for this system; none is 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 Dallas City'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; none is 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 Dallas City's water quality report?
As a community water system, Dallas City 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 Hancock County
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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, “Dallas City, PWSID IL0674300, Illinois”, https://aquacensus.com/water-systems/illinois/dallas-city-il0674300 (data as of October 1, 2026).