Public water system · WI4600437
ActiveCedar Grove Waterworks
At a glance
Cedar Grove Waterworks (PWSID WI4600437) is an active community water system in Sheboygan County, Wisconsin. It reports serving 2,213 people through 819 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, one is health-based, and the most recent began in September 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,213
Service connections
819
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Cedar Grove Waterworks compare with other water systems in Sheboygan County?
By EPA's size categories, Cedar Grove Waterworks is a small system (501 to 3,300 people). Sheboygan County has 215 active public water systems. Its population served is about 4 times the county average of 559 people per system, and accounts for 1.8% of the 120,200 people reported by systems filed under the county. Across Wisconsin, the 11,056 active systems average 469 people each. Nationally, the average active community water system reports serving 6,703 people, so Cedar Grove Waterworks 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. Wisconsin has 1,053 active community water systems, 9.5% of the state's 11,056 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,978 Wisconsin systems (99%) list groundwater as their primary source.
Who owns and regulates Cedar Grove Waterworks?
EPA lists Cedar Grove Waterworks as owned by a local government. The WI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 31 of the 215 active systems in Sheboygan County (14%) are also owned by a local government.
Does Cedar Grove Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2014. The violations listed here began between January 1996 and September 2014. By type: 11 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 11 as resolved and 1 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 |
|---|---|---|---|---|
| 2014-09-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-09-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-09-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-09-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,3,7,8-TCDD (dioxin)code 2063 | No | Archived |
| 1997-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2,4-Trichlorobenzenecode 2378 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 1996-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | 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.
Cedar Grove Waterworks: frequently asked questions
Who runs Cedar Grove Waterworks?
Cedar Grove Waterworks (PWSID WI4600437) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Cedar Grove Waterworks serve?
Cedar Grove Waterworks reports serving 2,213 people through 819 service connections in Sheboygan County, Wisconsin.
Where does Cedar Grove Waterworks 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 Cedar Grove Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2014. 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 Cedar Grove Waterworks' 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, one is health-based, and the most recent began in September 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Cedar Grove Waterworks' water quality report?
As a community water system, Cedar Grove Waterworks 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 Sheboygan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sheboygan Water Utilities | Sheboygan | 49,931 | Community | Surface water |
| Plymouth Utilities | Sheboygan | 8,964 | Community | Groundwater |
| Sheboygan Falls Utilities | Sheboygan | 8,687 | Community | Purchased surface water |
| Sheboygan Tn Waterworks | Sheboygan | 4,596 | Community | Groundwater |
| Oostburg Waterworks | Sheboygan | 3,110 | Community | Groundwater |
| Kohler Waterworks | Sheboygan | 2,271 | Community | Purchased surface water |
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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, “Cedar Grove Waterworks, PWSID WI4600437, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/cedar-grove-waterworks-wi4600437 (data as of October 1, 2026).