Public water system · IA2427049
ActiveDow City Water Works
At a glance
Dow City Water Works (PWSID IA2427049) is an active community water system in Crawford County, Iowa. It reports serving 467 people through 255 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in May 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
467
Service connections
255
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dow City Water Works compare with other water systems in Crawford County?
By EPA's size categories, Dow City Water Works is a very small system (500 people or fewer). Crawford County has 10 active public water systems, and Dow City Water Works is the 6th-largest of them by population served. Its population served is well below the county average of 1,553 people per system, and accounts for 3% of the 15,526 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 Dow City 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 Dow City Water Works?
EPA lists Dow City 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 10 active systems in Crawford County (90%) are also owned by a local government.
Does Dow City Water Works have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in May 2020. The violations listed here began between January 1994 and May 2020. By type: 9 monitoring and reporting, 2 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Nitrate (5 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2020-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-11-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2019-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 2004-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Nitratecode 1040 | Yes | Resolved |
| 1996-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Resolved |
| 1995-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | 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.
Dow City Water Works: frequently asked questions
Who runs Dow City Water Works?
Dow City Water Works (PWSID IA2427049) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Dow City Water Works serve?
Dow City Water Works reports serving 467 people through 255 service connections in Crawford County, Iowa.
Where does Dow City 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 Dow City Water Works have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in May 2020. 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 Dow City 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. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in May 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Dow City Water Works' water quality report?
As a community water system, Dow City 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 Crawford County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Denison Water Supply | Crawford | 9,381 | Community | Groundwater |
| W Central Rwa - Denison Subsys | Crawford | 2,428 | Community | Purchased groundwater |
| Schleswig Munic Water Supply | Crawford | 803 | Community | Purchased groundwater |
| Manilla Muni Service Dept | Crawford | 758 | Community | Groundwater |
| Charter Oak Water Supply | Crawford | 522 | Community | Purchased groundwater |
| Vail Water Supply | Crawford | 383 | 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, “Dow City Water Works, PWSID IA2427049, Iowa”, https://aquacensus.com/water-systems/iowa/dow-city-water-works-ia2427049 (data as of October 1, 2026).