Massillon WWTP
100 Big Indian Dr SW, Massillon, OH 44646 · Stark County · Publicly Owned Treatment Works
- Average flow
- 11.5 MGD
- Design flow
- 17 MGD
- NPDES permit
- OH0020516
- Effective
- Permit expires
- May 2031
- Population served
- 62,192
- CWNS 2022
Massillon WWTP is a publicly owned wastewater treatment works in Massillon, Stark County, Ohio treating an average of 11.5 million gallons per day against a permitted design capacity of 17 MGD, serving about 62,192 residents. It discharges under NPDES permit OH0020516 (effective), which expires in May 2031, with 0 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Massillon WWTP.
Available with a free Klarifi account
See the full treatment train at Massillon WWTP: 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 Massillon WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Massillon WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Navarre · 4 mi away
0.67 MGD
Navarre · 4 mi away
0.04 MGD
Navarre · 4 mi away
0.01 MGD
Massillon · 5 mi away
0.62 MGD
Brewster · 6 mi away
—
Navarre · 7 mi away
0.05 MGD
Canal Fulton · 7 mi away
0.5 MGD
Canton · 8 mi away
25.4 MGD
Massillon WWTP: 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 September 14, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms