Public water system · WI4600278
ActiveAldrich Chemical Co
At a glance
Aldrich Chemical Co (PWSID WI4600278) is an active non-transient non-community water system in Sheboygan County, Wisconsin. It reports serving 400 people through 13 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 1995.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
13
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Aldrich Chemical Co compare with other water systems in Sheboygan County?
By EPA's size categories, Aldrich Chemical Co is a very small system (500 people or fewer). Sheboygan County has 215 active public water systems. Its population served is about 28% below the county average of 559 people per system, and accounts for 0.3% 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 non-transient non-community water system reports serving 430 people, so Aldrich Chemical Co is roughly in line with that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Wisconsin has 891 active non-transient non-community water systems, 8.1% 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 Aldrich Chemical Co?
EPA lists Aldrich Chemical Co as privately owned. 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. 166 of the 215 active systems in Sheboygan County (77%) are also privately owned.
Does Aldrich Chemical Co have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 1995. The violations listed here began between April 1995 and October 1995. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Tetrachloroethylene (2 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 |
|---|---|---|---|---|
| 1995-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Tetrachloroethylenecode 2987 | No | Resolved |
| 1995-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | 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.
Aldrich Chemical Co: frequently asked questions
Who runs Aldrich Chemical Co?
Aldrich Chemical Co (PWSID WI4600278) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Aldrich Chemical Co serve?
Aldrich Chemical Co reports serving 400 people through 13 service connections in Sheboygan County, Wisconsin.
Where does Aldrich Chemical Co 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 Aldrich Chemical Co 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 October 1995. 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 Aldrich Chemical Co'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 1995. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Aldrich Chemical Co's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Aldrich Chemical Co is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Aldrich Chemical Co, PWSID WI4600278, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/aldrich-chemical-co-wi4600278 (data as of October 1, 2026).