Potosi-Tennyson Sewage Commission WWTF
100 Plant St, Potosi, WI 53820 · Grant County · Publicly Owned Treatment Works
- Average flow
- 0.92 MGD
- Design flow
- 0.33 MGD
- NPDES permit
- WI0021547
- Expired
- Permit expires
- December 2023
- Population served
- 768
- CWNS 2022
Potosi-Tennyson Sewage Commission WWTF is a publicly owned wastewater treatment works in Potosi, Grant County, Wisconsin treating an average of 0.92 million gallons per day against a permitted design capacity of 0.33 MGD, serving about 768 residents. It discharges under NPDES permit WI0021547 (expired), which expires in December 2023, with 21 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Potosi-Tennyson Sewage Commission WWTF.
Available with a free Klarifi account
See the full treatment train at Potosi-Tennyson Sewage Commission WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 21
- Effluent violations
- 21
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Potosi-Tennyson Sewage Commission WWTF, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Potosi-Tennyson Sewage Commission WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Dickeyville · 7 mi away
0.06 MGD
Kieler · 8 mi away
0.09 MGD
Hazel Green · 11 mi away
0.00078 MGD
Platteville · 12 mi away
1.23 MGD
Cassville · 13 mi away
0.07 MGD
Cuba City · 16 mi away
0.13 MGD
Hazel Green · 18 mi away
0.05 MGD
Stitzer · 19 mi away
0.0054 MGD
Potosi-Tennyson Sewage Commission WWTF: 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 November 27, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms