Public water system · IA2154039
ActivePeterson Municipal Water Supply
At a glance
Peterson Municipal Water Supply (PWSID IA2154039) is an active community water system in Clay County, Iowa. It reports serving 322 people through 209 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
322
Service connections
209
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Peterson Municipal Water Supply compare with other water systems in Clay County?
By EPA's size categories, Peterson Municipal Water Supply is a very small system (500 people or fewer). Clay County has 6 active public water systems, and Peterson Municipal Water Supply is the 4th-largest of them by population served. Its population served is well below the county average of 3,227 people per system, and accounts for 1.7% of the 19,361 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 Peterson Municipal Water Supply 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 Peterson Municipal Water Supply?
EPA lists Peterson Municipal Water Supply as owned by a local government. 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. 5 of the 6 active systems in Clay County (83%) are also owned by a local government.
Does Peterson Municipal Water Supply have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2007. The violations listed here began between November 1999 and November 2007. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as resolved. 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 |
|---|---|---|---|---|
| 2007-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 2 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.
Peterson Municipal Water Supply: frequently asked questions
Who runs Peterson Municipal Water Supply?
Peterson Municipal Water Supply (PWSID IA2154039) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Peterson Municipal Water Supply serve?
Peterson Municipal Water Supply reports serving 322 people through 209 service connections in Clay County, Iowa.
Where does Peterson Municipal Water Supply 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 Peterson Municipal Water Supply have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2007. 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 Peterson Municipal Water Supply'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 2 violations for this system; none is health-based, and the most recent began in November 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Peterson Municipal Water Supply's water quality report?
As a community water system, Peterson Municipal Water Supply 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 Clay County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Spencer Municipal Water Utility | Clay | 11,325 | Community | Groundwater |
| Iowa Lakes Regional Water | Clay + 1 more | 6,755 | Community | Groundwater |
| Everly Water Supply | Clay | 575 | Community | Groundwater |
| Fostoria Municipal Water Supply | Clay | 233 | Community | Purchased groundwater |
| Dickens Water Works | Clay | 151 | 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, “Peterson Municipal Water Supply, PWSID IA2154039, Iowa”, https://aquacensus.com/water-systems/iowa/peterson-municipal-water-supply-ia2154039 (data as of October 1, 2026).