City Of Montreal
53 Wisconsin Ave., Montreal, WI 54550 · Iron County · Publicly Owned Treatment Works
- Average flow
- 0.19 MGD
- Design flow
- 0.65 MGD
- NPDES permit
- WI0022306
- Expired
- Permit expires
- June 2023
- Population served
- 1,039
- CWNS 2022
City Of Montreal is a publicly owned wastewater treatment plant in Montreal, Iron County, Wisconsin treating an average of 0.19 million gallons per day against a permitted design capacity of 0.65 MGD, serving about 1,039 residents. It discharges under NPDES permit WI0022306 (expired), which expires in June 2023, with 19 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at City Of Montreal.
Available with a free Klarifi account
See the full treatment train at City Of Montreal: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 19
- Effluent violations
- 19
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for City Of Montreal, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at City Of Montreal, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Wisconsin
Upson · 8 mi away
0.06 MGD
Mellen · 21 mi away
0.14 MGD
Odanah · 25 mi away
0.05 MGD
Glidden · 27 mi away
0.15 MGD
Ashland · 31 mi away
0.95 MGD
La Pointe · 35 mi away
0.03 MGD
Washburn · 36 mi away
0.18 MGD
Park Falls · 36 mi away
0.3 MGD
City Of Montreal: 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 9, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms