Public water system · WI4600446
ActivePlymouth Utilities
At a glance
Plymouth Utilities (PWSID WI4600446) is an active community water system in Sheboygan County, Wisconsin. It reports serving 8,964 people through 3,139 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, none is health-based, and the most recent began in April 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,964
Service connections
3,139
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Plymouth Utilities compare with other water systems in Sheboygan County?
By EPA's size categories, Plymouth Utilities is a medium system (3,301 to 10,000 people). Sheboygan County has 215 active public water systems, and Plymouth Utilities is the 2nd-largest of them by population served. Its population served is about 16 times the county average of 559 people per system, and accounts for 7.5% 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 Plymouth Utilities is about 34% 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. 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 Plymouth Utilities?
EPA lists Plymouth Utilities 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 Plymouth Utilities have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2024. The violations listed here began between April 2015 and April 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are Nitrate, 1,2-Dichloropropane, Vinyl chloride and Dichloromethane. 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 |
|---|---|---|---|---|
| 2024-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzenecode 2990 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2015-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | 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.
Plymouth Utilities: frequently asked questions
Who runs Plymouth Utilities?
Plymouth Utilities (PWSID WI4600446) is a community water system owned by a local government. It is regulated by the WI state drinking water program.
How many people does Plymouth Utilities serve?
Plymouth Utilities reports serving 8,964 people through 3,139 service connections in Sheboygan County, Wisconsin.
Where does Plymouth Utilities 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 Plymouth Utilities have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2024. 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 Plymouth Utilities' 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, none is health-based, and the most recent began in April 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the WI state drinking water program.
Where can I find Plymouth Utilities' water quality report?
As a community water system, Plymouth Utilities 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 |
| 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 |
| Cedar Grove Waterworks | Sheboygan | 2,213 | 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, “Plymouth Utilities, PWSID WI4600446, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/plymouth-utilities-wi4600446 (data as of October 1, 2026).