Public water system · IA1240081
ActiveDumont Water Supply
At a glance
Dumont Water Supply (PWSID IA1240081) is an active community water system in Butler County, Iowa. It reports serving 635 people through 323 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in December 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
635
Service connections
323
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dumont Water Supply compare with other water systems in Butler County?
By EPA's size categories, Dumont Water Supply is a small system (501 to 3,300 people). Butler County has 16 active public water systems. Its population served is roughly in line with the county average of 586 people per system, and accounts for 6.8% of the 9,368 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 Dumont 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 Dumont Water Supply?
EPA lists Dumont 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. 9 of the 16 active systems in Butler County (56%) are also owned by a local government.
Does Dumont Water Supply have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in December 2023. The violations listed here began between July 2009 and December 2023. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2023-12-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 3 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.
Dumont Water Supply: frequently asked questions
Who runs Dumont Water Supply?
Dumont Water Supply (PWSID IA1240081) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Dumont Water Supply serve?
Dumont Water Supply reports serving 635 people through 323 service connections in Butler County, Iowa.
Where does Dumont 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 Dumont Water Supply have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in December 2023. 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 Dumont 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 3 violations for this system; 2 are health-based, and the most recent began in December 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Dumont Water Supply's water quality report?
As a community water system, Dumont 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 Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Parkersburg Water Supply | Butler | 2,019 | Community | Groundwater |
| Shell Rock Muni Water Supp | Butler | 1,269 | Community | Groundwater |
| Clarksville Water Supply | Butler | 1,254 | Community | Groundwater |
| Aplington Water Supply | Butler | 1,126 | Community | Groundwater |
| Greene Muni Water Supply | Butler | 994 | Community | Groundwater |
| Allison Water Supply | Butler | 966 | 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, “Dumont Water Supply, PWSID IA1240081, Iowa”, https://aquacensus.com/water-systems/iowa/dumont-water-supply-ia1240081 (data as of October 1, 2026).