WILLIAMS BAY WATERWORKS
PWSID: WI2650060 · Williams Bay, WI · Serves 2,601 people
According to EPA Safe Drinking Water Information System (SDWIS), WILLIAMS BAY WATERWORKS (PWSID WI2650060) in Williams Bay, WI is listed as a CWS water system covering about 2,601 people. The same extract lists 1 health-based violation record spanning 2025-2025. Those 1 health-based row for WILLIAMS BAY WATERWORKS cover contaminants such as Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
WILLIAMS BAY WATERWORKS has 1 health-based violation record in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Lead and Copper Rule. Recorded violations span 2025–2025. Day-to-day primacy enforcement for this system runs through the Wisconsin drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Wisconsin state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- WI2650060
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Williams Bay, WI
- Population Served
- 2,601
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead and Copper Rule | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Jul 1, 2025 |
Frequently Asked Questions
What does EPA SDWIS list for WILLIAMS BAY WATERWORKS?
How many people does WILLIAMS BAY WATERWORKS serve?
What violations does WILLIAMS BAY WATERWORKS have?
What contaminants have been found in WILLIAMS BAY WATERWORKS water?
Compare beyond Wisconsin
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest WILLIAMS BAY WATERWORKS on cumulative violation count (1) and EPA-reported population served (2,601). Violation-count peers include CHOCTAW - CONEHATTA, CHOCTAW - PEARL RIVER, CHOCTAW - TUCKER. Population peers include FORT BELKNAP AGENCY WATER SYSTEM, EUDORA WATERWORKS, BISBEE DOUGLAS INTL AIRPORT.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
WILLIAMS BAY WATERWORKS (WI2650060) is drawn from EPA SDWIS. Nearby county systems in this extract include WHITEWATER WATERWORKS; ELKHORN WATERWORKS; DELAVAN WATERWORKS; EAST TROY WATERWORKS. Health-based rows (1 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.