Jefferson Wastewater Treatment
221 East Henry Street, Jefferson, WI 53549 · Jefferson County · Publicly Owned Treatment Works
- Average flow
- 1.17 MGD
- Design flow
- 1.7 MGD
- NPDES permit
- WI0024333
- Expired
- Permit expires
- March 2026
- Population served
- 7,989
- CWNS 2022
Jefferson Wastewater Treatment is a publicly owned wastewater treatment works in Jefferson, Jefferson County, Wisconsin treating an average of 1.17 million gallons per day against a permitted design capacity of 1.7 MGD, serving about 7,989 residents. It discharges under NPDES permit WI0024333 (expired), which expires in March 2026, with 0 recorded violations in the last three years.
Treatment technology
3 treatment structures and unit processes identified at Jefferson Wastewater Treatment.
Available with a free Klarifi account
See the full treatment train at Jefferson Wastewater Treatment: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Jefferson Wastewater Treatment, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Jefferson Wastewater Treatment, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Fort Atkinson · 7 mi away
2.45 MGD
Lake Mills · 8 mi away
0.61 MGD
Whitewater · 10 mi away
1.57 MGD
Cambridge · 11 mi away
0.37 MGD
Rockdale · 12 mi away
0.01 MGD
Watertown · 13 mi away
3.51 MGD
Palmyra · 14 mi away
0.16 MGD
Deerfield · 14 mi away
0.2 MGD
Jefferson Wastewater Treatment: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated March 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms