Public water system · WI2650327
ActiveKikkoman Foods
At a glance
Kikkoman Foods (PWSID WI2650327) is an active non-transient non-community water system in Walworth County, Wisconsin. It reports serving 170 people through 3 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, 2 are health-based, and the most recent began in November 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
170
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Kikkoman Foods compare with other water systems in Walworth County?
By EPA's size categories, Kikkoman Foods is a very small system (500 people or fewer). Walworth County has 252 active public water systems. Its population served is about 55% below the county average of 380 people per system, and accounts for 0.2% of the 95,693 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 Kikkoman Foods is about 60% below 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 Kikkoman Foods?
EPA lists Kikkoman Foods 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. 215 of the 252 active systems in Walworth County (85%) are also privately owned.
Does Kikkoman Foods have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in November 2025. The violations listed here began between January 2003 and November 2025. By type: 9 monitoring and reporting, 2 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Stage 1 Disinfectants and Disinfection Byproducts Rule (2 of them). EPA lists 8 as archived and 4 as resolved. 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. 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 |
|---|---|---|---|---|
| 2025-11-02 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2017-11-02 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2009-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Archived |
| 2004-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | o-Dichlorobenzenecode 2968 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Archived |
| 2003-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Archived |
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.
Kikkoman Foods: frequently asked questions
Who runs Kikkoman Foods?
Kikkoman Foods (PWSID WI2650327) is a non-transient non-community water system privately owned. It is regulated by the WI state drinking water program.
How many people does Kikkoman Foods serve?
Kikkoman Foods reports serving 170 people through 3 service connections in Walworth County, Wisconsin.
Where does Kikkoman Foods 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 Kikkoman Foods have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in November 2025. 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 Kikkoman Foods' 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, 2 are health-based, and the most recent began in November 2025. For current results, consult EPA ECHO, or the WI state drinking water program.
Where can I find Kikkoman Foods' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Kikkoman Foods 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 Walworth County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Whitewater Waterworks | Walworth | 14,000 | Community | Groundwater |
| Elkhorn Waterworks | Walworth | 10,317 | Community | Groundwater |
| Delavan Waterworks | Walworth | 9,028 | Community | Groundwater |
| Lake Geneva Utility Commission | Walworth | 7,107 | Community | Groundwater |
| East Troy Waterworks | Walworth | 5,054 | Community | Groundwater |
| Bloomfield, Village of | Walworth | 4,071 | 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, “Kikkoman Foods, PWSID WI2650327, Wisconsin”, https://aquacensus.com/water-systems/wisconsin/kikkoman-foods-wi2650327 (data as of October 1, 2026).