North Plant WWTF
Silsbee, TX · Hardin County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- 0.25 MGD
- NPDES permit
- TX0023728
- Effective
- Permit expires
- November 2028
- Population served
- 1,449
- CWNS 2022
North Plant WWTF is a publicly owned wastewater treatment works in Silsbee, Hardin County, Texas treating an average of 0.1 million gallons per day against a permitted design capacity of 0.25 MGD, serving about 1,449 residents. Treatment on site includes clarifiers, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit TX0023728 (effective), which expires in November 2028, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at North Plant WWTF.
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Nearby wastewater treatment plants in Texas
Silsbee · 2 mi away
0.95 MGD
Kountze · 6 mi away
0.17 MGD
Evadale · 7 mi away
0.11 MGD
Lumberton · 10 mi away
2.9 MGD
Jasper · 15 mi away
0.13 MGD
Sour Lake · 16 mi away
0.13 MGD
Vidor · 19 mi away
2.14 MGD
Warren · 20 mi away
0.0035 MGD
North Plant WWTF: 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 March 19, 2025.