Ashland Sewage Utility
1901 Knight Road, Ashland, WI 54806 · Ashland County · Publicly Owned Treatment Works
- Average flow
- 0.95 MGD
- Design flow
- 1.6 MGD
- NPDES permit
- WI0030767
- Expired
- Permit expires
- March 2022
- Population served
- 7,892
- CWNS 2022
Ashland Sewage Utility is a publicly owned wastewater treatment works in Ashland, Ashland County, Wisconsin treating an average of 0.95 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 7,892 residents. It discharges under NPDES permit WI0030767 (expired), which expires in March 2022, with 1 recorded violation in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Ashland Sewage Utility.
Available with a free Klarifi account
See the full treatment train at Ashland Sewage Utility: 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 Ashland Sewage Utility.
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Nearby wastewater treatment plants in Wisconsin
Washburn · 5 mi away
0.18 MGD
Odanah · 7 mi away
0.05 MGD
Bayfield · 14 mi away
0.11 MGD
La Pointe · 14 mi away
0.03 MGD
Bayfield · 19 mi away
0.49 MGD
Grand View · 19 mi away
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Mellen · 21 mi away
0.14 MGD
Cornucopia · 22 mi away
0.04 MGD
Ashland Sewage Utility: 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 · Biosolids · Filter press · all terms