Public water system · IA0690305
ActiveWalnut Street Well
At a glance
Walnut Street Well (PWSID IA0690305) is an active community water system in Benton County, Iowa. It reports serving 45 people through 18 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; none is health-based, and the most recent began in November 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
45
Service connections
18
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Walnut Street Well compare with other water systems in Benton County?
By EPA's size categories, Walnut Street Well is a very small system (500 people or fewer). Benton County has 23 active public water systems. Its population served is well below the county average of 826 people per system, and accounts for 0.2% of the 19,007 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 Walnut Street Well 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 Walnut Street Well?
EPA lists Walnut Street Well 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. 9 of the 23 active systems in Benton County (39%) are also privately owned.
Does Walnut Street Well have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in November 2024. The violations listed here began between November 2016 and November 2024. By type: 4 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). 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 |
|---|---|---|---|---|
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-12-10 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2017-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Walnut Street Well: frequently asked questions
Who runs Walnut Street Well?
Walnut Street Well (PWSID IA0690305) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Walnut Street Well serve?
Walnut Street Well reports serving 45 people through 18 service connections in Benton County, Iowa.
Where does Walnut Street Well 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 Walnut Street Well have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in November 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 Walnut Street Well'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 5 violations for this system; none is health-based, and the most recent began in November 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 Walnut Street Well's water quality report?
As a community water system, Walnut Street Well 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 Benton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Vinton Municipal Water Dept | Benton | 4,938 | Community | Groundwater |
| Belle Plaine Water Dept | Benton | 2,380 | Community | Groundwater |
| Atkins Municipal Water Works | Benton | 2,056 | Community | Groundwater |
| Poweshiek Water Association (Cr) | Benton | 2,000 | Community | Purchased groundwater under influence |
| Urbana Water Supply | Benton | 1,554 | Community | Groundwater |
| Shellsburg Water Supply | Benton | 961 | 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, “Walnut Street Well, PWSID IA0690305, Iowa”, https://aquacensus.com/water-systems/iowa/walnut-street-well-ia0690305 (data as of October 1, 2026).