Pcpwsd No 2, Twitty Industrial Park WWTP
Rolla, MO · Phelps County · Publicly Owned Treatment Works
- Average flow
- 0.00014 MGD
- Design flow
- —
- NPDES permit
- MO0129704
- Administratively continued
- Permit expires
- June 2023
- Population served
- 50
- CWNS 2022
Pcpwsd No 2, Twitty Industrial Park WWTP is a publicly owned wastewater treatment works in Rolla, Phelps County, Missouri treating an average of 0.00014 million gallons per day, serving about 50 residents. Treatment on site includes attached growth, aerobic, dechlorination, disinfection, chlorine/ chloramine, screening. It discharges under NPDES permit MO0129704 (administratively continued), which expires in June 2023, with 73 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Attached Growth, Aerobic
unit processDechlorination
unit processDisinfection, chlorine/ chloramine
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 73
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Pcpwsd No 2, Twitty Industrial Park WWTP.
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Pcpwsd No 2, Twitty Industrial Park 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 September 11, 2026; facility record last updated September 3, 2024.