Greenland Twp Wwsl
Depot Road, Mass City, MI 49948 · Ontonagon County · Publicly Owned Treatment Works
- Average flow
- 1.7 MGD
- Design flow
- —
- NPDES permit
- MIG580215
- Effective
- Permit expires
- April 2029
- Population served
- 773
- CWNS 2022
Greenland Twp Wwsl is a publicly owned wastewater treatment plant in Mass City, Ontonagon County, Michigan treating an average of 1.7 million gallons per day, serving about 773 residents. It discharges under NPDES permit MIG580215 (effective), which expires in April 2029, with 49 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Greenland Twp Wwsl.
Available with a free Klarifi account
See the full treatment train at Greenland Twp Wwsl: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 49
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Greenland Twp Wwsl, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Greenland Twp Wwsl, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Michigan
Rockland · 7 mi away
0.75 MGD
Ewen · 18 mi away
—
Trout Creek · 19 mi away
0.32 MGD
White Pine · 23 mi away
—
Bergland · 25 mi away
0.97 MGD
Baraga · 26 mi away
2.91 MGD
Painesdale · 28 mi away
1.98 MGD
Chassell · 32 mi away
—
Greenland Twp Wwsl: 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 19, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms