Public water system · IA1716076
ActiveClear Lake Water Department
At a glance
Clear Lake Water Department (PWSID IA1716076) is an active community water system in Cerro Gordo County, Iowa. It reports serving 7,687 people through 4,068 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,687
Service connections
4,068
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Clear Lake Water Department compare with other water systems in Cerro Gordo County?
By EPA's size categories, Clear Lake Water Department is a medium system (3,301 to 10,000 people). Cerro Gordo County has 34 active public water systems, and Clear Lake Water Department is the 2nd-largest of them by population served. Its population served is about 6.6 times the county average of 1,173 people per system, and accounts for 19% of the 39,879 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 Clear Lake Water Department is about 15% above 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 Clear Lake Water Department?
EPA lists Clear Lake Water Department 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. 11 of the 34 active systems in Cerro Gordo County (32%) are also owned by a local government.
Does Clear Lake Water Department have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 1994. The violations listed here began between January 1987 and February 1994. By type: 8 monitoring and reporting. The contaminants or rules involved are Total coliform bacteria (TCR), 1,1,1-Trichloroethane, 1,1-Dichloroethylene and 1,2-Dichloroethane. EPA lists 8 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 |
|---|---|---|---|---|
| 1994-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 1987-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
All 8 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.
Clear Lake Water Department: frequently asked questions
Who runs Clear Lake Water Department?
Clear Lake Water Department (PWSID IA1716076) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Clear Lake Water Department serve?
Clear Lake Water Department reports serving 7,687 people through 4,068 service connections in Cerro Gordo County, Iowa.
Where does Clear Lake Water Department 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 Clear Lake Water Department have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 1994. 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 Clear Lake Water Department'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 8 violations for this system; none is health-based, and the most recent began in February 1994. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Clear Lake Water Department's water quality report?
As a community water system, Clear Lake Water Department 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 Cerro Gordo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mason City Water Department | Cerro Gordo | 27,338 | Community | Groundwater |
| Rockwell Water Supply | Cerro Gordo | 1,071 | Community | Groundwater |
| Ventura Water Works | Cerro Gordo | 716 | Community | Groundwater |
| Thornton Water Supply | Cerro Gordo | 400 | Community | Groundwater |
| Plymouth Water Supply | Cerro Gordo | 378 | Community | Groundwater |
| Bell Harbor | Cerro Gordo | 352 | 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, “Clear Lake Water Department, PWSID IA1716076, Iowa”, https://aquacensus.com/water-systems/iowa/clear-lake-water-department-ia1716076 (data as of October 1, 2026).