JEFFERSON WATERWORKS
PWSID: WI1280104 · Jefferson, WI · Serves 7,926 people
According to EPA Safe Drinking Water Information System (SDWIS), JEFFERSON WATERWORKS (PWSID WI1280104) in Jefferson, WI is listed as a CWS water system covering about 7,926 people. The same extract lists 23 health-based violation records spanning 1993-2024. Those 23 health-based rows for JEFFERSON WATERWORKS cover contaminants such as Combined Radium (-226 and -228), Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
JEFFERSON WATERWORKS has 23 health-based violation records 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. 2 distinct EPA contaminant codes appear in this system's record, including Combined Radium (-226 and -228), Lead and Copper Rule. Recorded violations span 1993–2024. 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)
- WI1280104
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Jefferson, WI
- Population Served
- 7,926
- Health Violations
- Yes (23)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Combined Radium (-226 and -228) | 22 | 22 |
| Lead and Copper Rule | 1 | 1 |
Violation History (23)
Frequently Asked Questions
What does EPA SDWIS list for JEFFERSON WATERWORKS?
How many people does JEFFERSON WATERWORKS serve?
What violations does JEFFERSON WATERWORKS have?
What contaminants have been found in JEFFERSON WATERWORKS water?
Compare beyond Wisconsin
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest JEFFERSON WATERWORKS on cumulative violation count (23) and EPA-reported population served (7,926). Violation-count peers include BETHEL-CITY S/D WATER, HOLLY GROVE WATERWORKS, DELIGHT WATERWORKS. Population peers include OCEAN ISLE BEACH, TOWN OF, FIRCREST CITY OF, PACIFIC CITY OF.
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).
Explore More
About This Data
JEFFERSON WATERWORKS (WI1280104) is drawn from EPA SDWIS. Health-based rows in this extract are MCL and Treatment Technique records spanning 1993-2024 covering Combined Radium (-226 and -228), Lead and Copper Rule. Historical registry entries, 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.