Royalton WWTP
Motley, MN 56466 · Morrison County · Publicly Owned Treatment Works
- Average flow
- 0.28 MGD
- Design flow
- 0.43 MGD
- NPDES permit
- MN0024244
- Expired
- Permit expires
- May 2026
- Population served
- 680
- CWNS 2022
Royalton WWTP is a publicly owned wastewater treatment works in Motley, Morrison County, Minnesota treating an average of 0.28 million gallons per day against a permitted design capacity of 0.43 MGD, serving about 680 residents. It discharges under NPDES permit MN0024244 (expired), which expires in May 2026, with 18 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Royalton WWTP.
Available with a free Klarifi account
See the full treatment train at Royalton WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 18
- Effluent violations
- 18
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Royalton WWTP.
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Nearby wastewater treatment plants in Minnesota
Staples · 7 mi away
0.26 MGD
East Gull Lake · 15 mi away
0.11 MGD
Randall · 19 mi away
0.07 MGD
Bertha · 20 mi away
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Browerville · 21 mi away
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Hewitt · 22 mi away
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Wadena · 24 mi away
0.28 MGD
Long Prairie · 26 mi away
1.1 MGD
Royalton 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 November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms