Rison WWTP
Rison, AR · Cleveland County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.31 MGD
- NPDES permit
- AR0021695
- Effective
- Permit expires
- June 2029
- Population served
- 924
- CWNS 2022
Rison WWTP is a publicly owned wastewater treatment works in Rison, Cleveland County, Arkansas, serving about 924 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit AR0021695 (effective), which expires in June 2029, with 68 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 68
- Effluent violations
- 68
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Rison WWTP.
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Nearby wastewater treatment plants in Arkansas
Kingsland · 9 mi away
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Pine Bluff · 15 mi away
0.0023 MGD
Pine Bluff · 15 mi away
0.03 MGD
Fordyce · 15 mi away
0.24 MGD
Pine Bluff · 16 mi away
0.01 MGD
Carthage · 21 mi away
—
Star City · 22 mi away
0.17 MGD
Thornton · 22 mi away
—
Rison 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 July 24, 2026.