Mount Horeb WWTF
2247 Sand Rock Road, Mount Horeb, WI 53572 · Dane County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.6 MGD
- NPDES permit
- WI0020281
- Expired
- Permit expires
- December 2023
- Population served
- 7,334
- CWNS 2022
Mount Horeb WWTF is a publicly owned wastewater treatment works in Mount Horeb, Dane County, Wisconsin, serving about 7,334 residents. It discharges under NPDES permit WI0020281 (expired), which expires in December 2023, with 1 recorded violation in the last three years.
Treatment technology
One treatment structure or unit process identified at Mount Horeb WWTF.
Available with a free Klarifi account
See the full treatment train at Mount Horeb WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Mount Horeb WWTF.
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Nearby wastewater treatment plants in Wisconsin
Blue Mounds · 5 mi away
0.04 MGD
Cross Plains · 10 mi away
0.35 MGD
Ridgeway · 12 mi away
0.04 MGD
Hollandale · 12 mi away
0.06 MGD
Mazomanie · 13 mi away
0.34 MGD
New Glarus · 14 mi away
0.34 MGD
Belleville · 14 mi away
0.18 MGD
Monticello · 19 mi away
0.23 MGD
Mount Horeb 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 August 18, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms