Public water system · IA0723027
ActiveEvansdale Water Works
At a glance
Evansdale Water Works (PWSID IA0723027) is an active community water system in Black Hawk County, Iowa. It reports serving 4,561 people through 2,028 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,561
Service connections
2,028
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Evansdale Water Works compare with other water systems in Black Hawk County?
By EPA's size categories, Evansdale Water Works is a medium system (3,301 to 10,000 people). Black Hawk County has 18 active public water systems, and Evansdale Water Works is the 3rd-largest of them by population served. Its population served is about 33% below the county average of 6,856 people per system, and accounts for 3.7% of the 123,407 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 Evansdale Water Works is about 32% 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 Evansdale Water Works?
EPA lists Evansdale 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. 10 of the 18 active systems in Black Hawk County (56%) are also owned by a local government.
Does Evansdale Water Works have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2019. The violations listed here began between October 2002 and June 2019. By type: 3 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Revised Total Coliform Rule, Haloacetic acids (HAA5), Total trihalomethanes (TTHM) and Nitrate. EPA lists 4 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 |
|---|---|---|---|---|
| 2019-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 4 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.
Evansdale Water Works: frequently asked questions
Who runs Evansdale Water Works?
Evansdale Water Works (PWSID IA0723027) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Evansdale Water Works serve?
Evansdale Water Works reports serving 4,561 people through 2,028 service connections in Black Hawk County, Iowa.
Where does Evansdale 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 Evansdale Water Works have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2019. 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 Evansdale 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 4 violations for this system; none is health-based, and the most recent began in June 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Evansdale Water Works' water quality report?
As a community water system, Evansdale 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 Black Hawk County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Waterloo Water Works | Black Hawk | 69,504 | Community | Groundwater |
| Cedar Falls Municipal Water Utilities | Black Hawk | 40,713 | Community | Groundwater |
| Hudson Water Supply | Black Hawk | 2,546 | Community | Purchased groundwater |
| La Porte City Utilities | Black Hawk | 2,284 | Community | Groundwater |
| Elk Run Heights Water Supply | Black Hawk | 1,069 | Community | Purchased groundwater |
| Dunkerton Muni Water Supply | Black Hawk | 842 | 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, “Evansdale Water Works, PWSID IA0723027, Iowa”, https://aquacensus.com/water-systems/iowa/evansdale-water-works-ia0723027 (data as of October 1, 2026).