Public water system · IA7930601
ActiveGrinnell MHP Mhc
At a glance
Grinnell MHP Mhc (PWSID IA7930601) is an active community water system in Poweshiek County, Iowa. It reports serving 313 people through 121 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
313
Service connections
121
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Grinnell MHP Mhc compare with other water systems in Poweshiek County?
By EPA's size categories, Grinnell MHP Mhc is a very small system (500 people or fewer). Poweshiek County has 8 active public water systems, and Grinnell MHP Mhc is the 5th-largest of them by population served. Its population served is well below the county average of 1,919 people per system, and accounts for 2% 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 Grinnell MHP Mhc 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 Grinnell MHP Mhc?
EPA lists Grinnell MHP Mhc 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. 2 of the 8 active systems in Poweshiek County (25%) are also privately owned.
Does Grinnell MHP Mhc have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2024. The violations listed here began between July 2022 and September 2024. By type: 2 public notice, recordkeeping or other, 1 required treatment not met and 1 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 3 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-09-01 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2024-01-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2023-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 4 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.
Grinnell MHP Mhc: frequently asked questions
Who runs Grinnell MHP Mhc?
Grinnell MHP Mhc (PWSID IA7930601) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Grinnell MHP Mhc serve?
Grinnell MHP Mhc reports serving 313 people through 121 service connections in Poweshiek County, Iowa.
Where does Grinnell MHP Mhc 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 Grinnell MHP Mhc have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in September 2024. 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 Grinnell MHP Mhc'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 4 violations for this system; 1 is health-based, and the most recent began in September 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Grinnell MHP Mhc's water quality report?
As a community water system, Grinnell MHP Mhc 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 |
| Malcom Water Supply | Poweshiek | 270 | 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, “Grinnell MHP Mhc, PWSID IA7930601, Iowa”, https://aquacensus.com/water-systems/iowa/grinnell-mhp-mhc-ia7930601 (data as of October 1, 2026).