Public water system · IA9203007
ActiveAinsworth Water Works
At a glance
Ainsworth Water Works (PWSID IA9203007) is an active community water system in Washington County, Iowa. It reports serving 511 people through 238 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
511
Service connections
238
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Ainsworth Water Works compare with other water systems in Washington County?
By EPA's size categories, Ainsworth Water Works is a small system (501 to 3,300 people). Washington County has 24 active public water systems, and Ainsworth Water Works is the 6th-largest of them by population served. Its population served is about 24% below the county average of 670 people per system, and accounts for 3.2% of the 16,082 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 Ainsworth Water Works 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 Ainsworth Water Works?
EPA lists Ainsworth Water Works 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 24 active systems in Washington County (38%) are also owned by a local government.
Does Ainsworth Water Works have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 2022. The violations listed here began between April 1989 and July 2022. By type: 4 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are Xylenes, Total, Ethylbenzene, Arsenic and Combined Radium (-226 and -228). EPA lists 5 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 |
|---|---|---|---|---|
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2001-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1994-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1989-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
All 5 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.
Ainsworth Water Works: frequently asked questions
Who runs Ainsworth Water Works?
Ainsworth Water Works (PWSID IA9203007) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Ainsworth Water Works serve?
Ainsworth Water Works reports serving 511 people through 238 service connections in Washington County, Iowa.
Where does Ainsworth Water Works 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 Ainsworth Water Works have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 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 Ainsworth Water Works' 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 5 violations for this system; 1 is health-based, and the most recent began in July 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 Ainsworth Water Works' water quality report?
As a community water system, Ainsworth Water Works 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washington Water Department | Washington | 7,362 | Community | Groundwater |
| Kalona Water Dept | Washington | 2,630 | Community | Groundwater |
| Wellman Municipal Waterworks | Washington | 1,524 | Community | Groundwater |
| Riverside Water Supply | Washington | 1,060 | Community | Groundwater |
| Brighton Municipal Water Supply | Washington | 600 | Community | Groundwater |
| Highland High School | Washington | 405 | Non-transient non-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, “Ainsworth Water Works, PWSID IA9203007, Iowa”, https://aquacensus.com/water-systems/iowa/ainsworth-water-works-ia9203007 (data as of October 1, 2026).