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Non-Transient Non-Community Water System · PWS WI4600278

Aldrich Chemical Co

Sheboygan Falls, Wisconsin 53085 - drinking water served from groundwater sources to 400 people, tracked in EPA SDWIS and UCMR5.

400
People served
93
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 93 drinking-water violations at Aldrich Chemical Co - above the Wisconsin per-system average.

93
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
400
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aldrich Chemical Co

Aldrich Chemical Co is a private-owned non-transient non-community water system that delivers drinking water to 400 residents in Sheboygan Falls, Wisconsin (Sheboygan County) through 13 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 93 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 93 monitoring and reporting violations are on file. The most recent violation on record dates to 1995.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 9 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Aldrich Chemical Co's 93 violations sit above the Wisconsin average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
400
Total Violations
93
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
13
County
Sheboygan
School/Daycare
No
MCL Violations
0
Monitoring Violations
93
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 9 1995
1,2-Dichloroethane MR 4 1995
p-Dichlorobenzene MR 4 1995
Tetrachloroethylene MR 4 1995
Toluene MR 4 1995
cis-1,2-Dichloroethylene MR 4 1995
DICHLOROMETHANE MR 4 1995
CHLOROBENZENE MR 4 1995
1,2-Dichloropropane MR 4 1995
1,1,1-Trichloroethane MR 4 1995
o-Dichlorobenzene MR 4 1995
trans-1,2-Dichloroethylene MR 4 1995
1,1-Dichloroethylene MR 4 1995
Styrene MR 4 1995
Benzene MR 4 1995
Trichloroethylene MR 4 1995
Xylenes, Total MR 4 1995
Carbon tetrachloride MR 4 1995
1,1,2-Trichloroethane MR 4 1995
Vinyl chloride MR 4 1995
Ethylbenzene MR 4 1995
1,2,4-Trichlorobenzene MR 4 1995

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Aldrich Chemical Co.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WI4600278 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Aldrich Chemical Co under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
1995 Coliform (TCR) MR 9 SDWIS / WI4600278 / 3100
1995 1,2-Dichloroethane MR 4 SDWIS / WI4600278 / 2980
1995 p-Dichlorobenzene MR 4 SDWIS / WI4600278 / 2969
1995 Tetrachloroethylene MR 4 SDWIS / WI4600278 / 2987
1995 Toluene MR 4 SDWIS / WI4600278 / 2991
1995 cis-1,2-Dichloroethylene MR 4 SDWIS / WI4600278 / 2380
1995 DICHLOROMETHANE MR 4 SDWIS / WI4600278 / 2964
1995 CHLOROBENZENE MR 4 SDWIS / WI4600278 / 2989
1995 1,2-Dichloropropane MR 4 SDWIS / WI4600278 / 2983
1995 1,1,1-Trichloroethane MR 4 SDWIS / WI4600278 / 2981
1995 o-Dichlorobenzene MR 4 SDWIS / WI4600278 / 2968
1995 trans-1,2-Dichloroethylene MR 4 SDWIS / WI4600278 / 2979
1995 1,1-Dichloroethylene MR 4 SDWIS / WI4600278 / 2977
1995 Styrene MR 4 SDWIS / WI4600278 / 2996
1995 Benzene MR 4 SDWIS / WI4600278 / 2990

How Aldrich Chemical Co Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Aldrich Chemical Co Wisconsin avg Federal benchmark
Total violations 93 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 5.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 400 467 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Aldrich Chemical Co water safe to drink? ▼
Aldrich Chemical Co (PWS ID: WI4600278) has 93 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 400 people using Groundwater sources.
How many people does Aldrich Chemical Co serve? ▼
Aldrich Chemical Co serves 400 people in Sheboygan Falls, Wisconsin. It is a Private-owned system using Groundwater water sources with 13 service connections.
What type of violations does Aldrich Chemical Co have? ▼
Aldrich Chemical Co has 93 total violations: 0 health-based violations (MCL exceedances or treatment failures), 93 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aldrich Chemical Co water? ▼
No PFAS testing data is available for Aldrich Chemical Co under the EPA's UCMR5 monitoring program.
What water source does Aldrich Chemical Co use? ▼
Aldrich Chemical Co uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.