Public water system · IA7950097
ActiveMontezuma Muni Water Supply
At a glance
Montezuma Muni Water Supply (PWSID IA7950097) is an active community water system in Poweshiek County, Iowa. It reports serving 1,545 people through 800 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1988.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,545
Service connections
800
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Montezuma Muni Water Supply compare with other water systems in Poweshiek County?
By EPA's size categories, Montezuma Muni Water Supply is a small system (501 to 3,300 people). Poweshiek County has 8 active public water systems, and Montezuma Muni Water Supply is the 3rd-largest of them by population served. Its population served is about 19% below the county average of 1,919 people per system, and accounts for 10% 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 Montezuma Muni 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 Montezuma Muni Water Supply?
EPA lists Montezuma Muni 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 Montezuma Muni Water Supply have drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1988. The violations listed here began between June 1982 and October 1988. By type: 9 monitoring and reporting. The contaminant or rule involved most often is Fluoride (2 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 1988-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 1982-06-25 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | 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.
Montezuma Muni Water Supply: frequently asked questions
Who runs Montezuma Muni Water Supply?
Montezuma Muni Water Supply (PWSID IA7950097) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Montezuma Muni Water Supply serve?
Montezuma Muni Water Supply reports serving 1,545 people through 800 service connections in Poweshiek County, Iowa.
Where does Montezuma Muni 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 Montezuma Muni Water Supply have any drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 1988. 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 Montezuma Muni 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 9 violations for this system; none is health-based, and the most recent began in October 1988. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Montezuma Muni Water Supply's water quality report?
As a community water system, Montezuma Muni 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 |
| Brooklyn Water Department | Poweshiek | 1,505 | Community | Purchased groundwater |
| Grinnell MHP Mhc | Poweshiek | 313 | 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, “Montezuma Muni Water Supply, PWSID IA7950097, Iowa”, https://aquacensus.com/water-systems/iowa/montezuma-muni-water-supply-ia7950097 (data as of October 1, 2026).