Diaz WWTP
Diaz, AR · Jackson County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.23 MGD
- NPDES permit
- AR0041033
- Effective
- Permit expires
- October 2027
- Population served
- 1,248
- CWNS 2022
Diaz WWTP is a publicly owned wastewater treatment works in Diaz, Jackson County, Arkansas, serving about 1,248 residents. Treatment on site includes aerated lagoons, uncovered lagoons. It discharges under NPDES permit AR0041033 (effective), which expires in October 2027, with 5 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
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Diaz WWTP.
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Nearby wastewater treatment plants in Arkansas
Newport · 3 mi away
—
Newport · 4 mi away
1.31 MGD
Tuckerman · 6 mi away
—
Amagon · 9 mi away
0.002 MGD
Grubbs · 10 mi away
—
Oil Trough · 11 mi away
—
Newark · 12 mi away
0.0087 MGD
Swifton · 13 mi away
—
Diaz 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 25, 2026.