Public water system · IA9921050
ActiveDows Water Supply
At a glance
Dows Water Supply (PWSID IA9921050) is an active community water system in Wright County, Iowa. It reports serving 526 people through 299 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in November 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
526
Service connections
299
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dows Water Supply compare with other water systems in Wright County?
By EPA's size categories, Dows Water Supply is a small system (501 to 3,300 people). Wright County has 22 active public water systems, and Dows Water Supply is the 6th-largest of them by population served. Its population served is roughly in line with the county average of 552 people per system, and accounts for 4.3% of the 12,136 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 Dows 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 Dows Water Supply?
EPA lists Dows 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. 9 of the 22 active systems in Wright County (41%) are also owned by a local government.
Does Dows Water Supply have drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in November 2016. The violations listed here began between October 1978 and November 2016. By type: 3 contaminant level above the legal limit, 2 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Fluoride (4 of them). EPA lists 3 as resolved and 3 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 |
|---|---|---|---|---|
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2004-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 1995-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 1978-12-21 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Fluoridecode 1025 | Yes | Archived |
| 1978-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Fluoridecode 1025 | Yes | Archived |
| 1978-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Fluoridecode 1025 | Yes | Archived |
All 6 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.
Dows Water Supply: frequently asked questions
Who runs Dows Water Supply?
Dows Water Supply (PWSID IA9921050) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Dows Water Supply serve?
Dows Water Supply reports serving 526 people through 299 service connections in Wright County, Iowa.
Where does Dows 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 Dows Water Supply have any drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in November 2016. 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 Dows 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 6 violations for this system; 3 are health-based, and the most recent began in November 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Dows Water Supply's water quality report?
As a community water system, Dows 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 Wright County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eagle Grove Water Supply | Wright | 3,601 | Community | Groundwater |
| Clarion Water Supply | Wright | 2,810 | Community | Groundwater |
| Belmond Water Supply | Wright | 2,463 | Community | Groundwater |
| Prestage Foods of Iowa | Wright | 800 | Non-transient non-community | Groundwater |
| Goldfield Water Supply | Wright | 634 | Community | Groundwater |
| Daybreak Foods Eagle Grove Complex | Wright | 210 | 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, “Dows Water Supply, PWSID IA9921050, Iowa”, https://aquacensus.com/water-systems/iowa/dows-water-supply-ia9921050 (data as of October 1, 2026).