Harris Co Mud 387 WWTP
Spring, TX · Harris County · Publicly Owned Treatment Works
- Average flow
- 1.13 MGD
- Design flow
- 3 MGD
- NPDES permit
- TX0124907
- Effective
- Permit expires
- November 2027
- Population served
- —
- CWNS 2022
Harris Co Mud 387 WWTP is a publicly owned wastewater treatment works in Spring, Harris County, Texas treating an average of 1.13 million gallons per day against a permitted design capacity of 3 MGD. Treatment on site includes clarifiers. It discharges under NPDES permit TX0124907 (effective), which expires in November 2027, with 38 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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Compliance snapshot (last 3 years)
- Total violations
- 38
- Effluent violations
- 33
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Harris Co Mud 387 WWTP.
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Nearby wastewater treatment plants in Texas
Houston · 2 mi away
0.83 MGD
Houston · 2 mi away
0.2 MGD
Houston · 2 mi away
0.21 MGD
Spring · 3 mi away
0.1 MGD
Houston · 3 mi away
0.31 MGD
Houston · 3 mi away
1.12 MGD
The Woodlands · 4 mi away
4.58 MGD
The Woodlands · 4 mi away
3.54 MGD
Harris Co Mud 387 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 May 29, 2025.