Public water system · IA1800900
ActiveCherokee Rws- Mill Creek Subsystem
At a glance
Cherokee Rws- Mill Creek Subsystem (PWSID IA1800900) is an active community water system in Cherokee County, Iowa. It reports serving 1,451 people through 603 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; none is health-based, and the most recent began in May 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,451
Service connections
603
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cherokee Rws- Mill Creek Subsystem compare with other water systems in Cherokee County?
By EPA's size categories, Cherokee Rws- Mill Creek Subsystem is a small system (501 to 3,300 people). Cherokee County has 12 active public water systems, and Cherokee Rws- Mill Creek Subsystem is the 3rd-largest of them by population served. Its population served is about 32% above the county average of 1,096 people per system, and accounts for 11% of the 13,149 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so Cherokee Rws- Mill Creek Subsystem 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. Iowa has 1,084 active community water systems, 59% of the state's 1,828 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Cherokee Rws- Mill Creek Subsystem?
EPA lists Cherokee Rws- Mill Creek Subsystem as privately owned. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 4 of the 12 active systems in Cherokee County (33%) are also privately owned.
Does Cherokee Rws- Mill Creek Subsystem have drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in May 2015. The violations listed here began between September 1980 and May 2015. By type: 9 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR), Selenium, Mercury and Nitrate. EPA lists 8 as archived 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. 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 |
|---|---|---|---|---|
| 2015-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Archived |
All 9 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.
Cherokee Rws- Mill Creek Subsystem: frequently asked questions
Who runs Cherokee Rws- Mill Creek Subsystem?
Cherokee Rws- Mill Creek Subsystem (PWSID IA1800900) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Cherokee Rws- Mill Creek Subsystem serve?
Cherokee Rws- Mill Creek Subsystem reports serving 1,451 people through 603 service connections in Cherokee County, Iowa.
Where does Cherokee Rws- Mill Creek Subsystem 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 Cherokee Rws- Mill Creek Subsystem have any drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in May 2015. 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 Cherokee Rws- Mill Creek Subsystem'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 9 violations for this system; none is health-based, and the most recent began in May 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Cherokee Rws- Mill Creek Subsystem's water quality report?
As a community water system, Cherokee Rws- Mill Creek Subsystem 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 Cherokee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Cherokee Water Supply - Plant 1 | Cherokee | 5,199 | Community | Groundwater |
| Cherokee Rws - Cherokee Subsystem | Cherokee | 3,315 | Community | Groundwater |
| Marcus Water Supply | Cherokee | 1,079 | Community | Groundwater |
| Aurelia Water Supply | Cherokee | 968 | Community | Groundwater |
| Quimby Water Supply | Cherokee | 249 | Community | Groundwater |
| Cleghorn Water Supply | Cherokee | 240 | 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, “Cherokee Rws- Mill Creek Subsystem, PWSID IA1800900, Iowa”, https://aquacensus.com/water-systems/iowa/cherokee-rws-mill-creek-subsystem-ia1800900 (data as of October 1, 2026).