Public water system · IA7945018
ActiveMalcom Water Supply
At a glance
Malcom Water Supply (PWSID IA7945018) is an active community water system in Poweshiek County, Iowa. It reports serving 270 people through 175 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in September 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
270
Service connections
175
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Malcom Water Supply compare with other water systems in Poweshiek County?
By EPA's size categories, Malcom Water Supply is a very small system (500 people or fewer). Poweshiek County has 8 active public water systems, and Malcom Water Supply is the 6th-largest of them by population served. Its population served is well below the county average of 1,919 people per system, and accounts for 1.8% of the 15,352 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 Malcom 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 156 Iowa systems (8.5%) list purchased groundwater as their primary source.
Who owns and regulates Malcom Water Supply?
EPA lists Malcom 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. 6 of the 8 active systems in Poweshiek County (75%) are also owned by a local government.
Does Malcom Water Supply have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in September 2008. The violations listed here began between February 1979 and September 2008. By type: 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 as resolved and 1 as archived. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2008-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1979-02-14 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Archived |
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.
Malcom Water Supply: frequently asked questions
Who runs Malcom Water Supply?
Malcom Water Supply (PWSID IA7945018) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Malcom Water Supply serve?
Malcom Water Supply reports serving 270 people through 175 service connections in Poweshiek County, Iowa.
Where does Malcom Water Supply 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 Malcom Water Supply have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in September 2008. 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 Malcom 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; 1 is health-based, and the most recent began in September 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Malcom Water Supply's water quality report?
As a community water system, Malcom 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 Poweshiek County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grinnell Water Department | Poweshiek | 9,564 | Community | Groundwater |
| Ponderosa Utilities Inc.. | Poweshiek | 1,750 | Community | Purchased groundwater |
| Montezuma Muni Water Supply | Poweshiek | 1,545 | Community | Groundwater |
| Brooklyn Water Department | Poweshiek | 1,505 | Community | Purchased groundwater |
| Grinnell MHP Mhc | Poweshiek | 313 | Community | Purchased groundwater |
| Deep River Water Supply | Poweshiek | 249 | 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, “Malcom Water Supply, PWSID IA7945018, Iowa”, https://aquacensus.com/water-systems/iowa/malcom-water-supply-ia7945018 (data as of October 1, 2026).