Public water system · IA8055014
ActiveMount Ayr Water Treatment Plant
At a glance
Mount Ayr Water Treatment Plant (PWSID IA8055014) is an active community water system in Ringgold County, Iowa. It reports serving 1,683 people through 900 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,683
Service connections
900
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Mount Ayr Water Treatment Plant compare with other water systems in Ringgold County?
By EPA's size categories, Mount Ayr Water Treatment Plant is a small system (501 to 3,300 people). Ringgold County has 3 active public water systems, and Mount Ayr Water Treatment Plant is the largest of them by population served. Its population served is about 123% above the county average of 756 people per system, and accounts for 74% of the 2,268 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 Mount Ayr Water Treatment Plant 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 surface water means the system buys surface water from another public water system rather than drawing its own. 119 Iowa systems (6.5%) list purchased surface water as their primary source.
Who owns and regulates Mount Ayr Water Treatment Plant?
EPA lists Mount Ayr Water Treatment Plant 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. 3 of the 3 active systems in Ringgold County (100%) are also owned by a local government.
Does Mount Ayr Water Treatment Plant have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2022. The violations listed here began between December 1997 and June 2022. By type: 6 contaminant level above the legal limit, 4 monitoring and reporting and 2 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (7 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2022-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2011-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2002-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2001-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2001-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2001-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2000-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 1997-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
The 12 most recent 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.
Mount Ayr Water Treatment Plant: frequently asked questions
Who runs Mount Ayr Water Treatment Plant?
Mount Ayr Water Treatment Plant (PWSID IA8055014) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Mount Ayr Water Treatment Plant serve?
Mount Ayr Water Treatment Plant reports serving 1,683 people through 900 service connections in Ringgold County, Iowa.
Where does Mount Ayr Water Treatment Plant get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Mount Ayr Water Treatment Plant have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2022. 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 Mount Ayr Water Treatment Plant'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. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Mount Ayr Water Treatment Plant's water quality report?
As a community water system, Mount Ayr Water Treatment Plant 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 Ringgold County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Diagonal Water Department | Ringgold | 338 | Community | Purchased surface water |
| Kellerton Water Supply | Ringgold | 247 | Community | Purchased surface water |
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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, “Mount Ayr Water Treatment Plant, PWSID IA8055014, Iowa”, https://aquacensus.com/water-systems/iowa/mount-ayr-water-treatment-plant-ia8055014 (data as of October 1, 2026).