Public water system · IL1950400
ActiveProphetstown
At a glance
Prophetstown (PWSID IL1950400) is an active community water system in Whiteside County, Illinois. It reports serving 2,100 people through 937 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, 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,100
Service connections
937
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Prophetstown compare with other water systems in Whiteside County?
By EPA's size categories, Prophetstown is a small system (501 to 3,300 people). Whiteside County has 59 active public water systems, and Prophetstown is the 5th-largest of them by population served. Its population served is about 3 times the county average of 696 people per system, and accounts for 5.1% of the 41,082 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 Prophetstown 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. 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 Prophetstown?
EPA lists Prophetstown 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. 8 of the 59 active systems in Whiteside County (14%) are also owned by a local government.
Does Prophetstown have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. The violations listed here began between October 1986 and July 2025. By type: 9 monitoring and reporting, 1 reporting, 1 required treatment not met and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule Revisions (2 of them). EPA lists 9 as archived, 2 as unaddressed and 1 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2025-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2003-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Bariumcode 1010 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Fluoridecode 1025 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Chromiumcode 1020 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Cadmiumcode 1015 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Nitratecode 1040 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Mercurycode 1035 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Seleniumcode 1045 | No | Archived |
| 1986-10-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Arseniccode 1005 | No | Archived |
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.
Prophetstown: frequently asked questions
Who runs Prophetstown?
Prophetstown (PWSID IL1950400) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Prophetstown serve?
Prophetstown reports serving 2,100 people through 937 service connections in Whiteside County, Illinois.
Where does Prophetstown 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 Prophetstown have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 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 Prophetstown'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, 2 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 Prophetstown's water quality report?
As a community water system, Prophetstown 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 Whiteside County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Sterling | Whiteside | 14,782 | Community | Groundwater |
| Rock Falls | Whiteside | 8,620 | Community | Groundwater |
| Morrison | Whiteside | 4,188 | Community | Groundwater |
| Fulton | Whiteside | 3,346 | Community | Groundwater |
| Erie | Whiteside | 1,479 | Community | Groundwater |
| Albany | Whiteside | 846 | 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, “Prophetstown, PWSID IL1950400, Illinois”, https://aquacensus.com/water-systems/illinois/prophetstown-il1950400 (data as of October 1, 2026).