Greenwood Forest WWTP
13415 Bammel-North Houston Rd, Houston, TX 77066 · Harris County · Publicly Owned Treatment Works
- Average flow
- 2.53 MGD
- Design flow
- 3 MGD
- NPDES permit
- TX0033243
- Effective
- Permit expires
- February 2028
- Population served
- 13,370
- CWNS 2022
Greenwood Forest WWTP is a publicly owned wastewater treatment works in Houston, Harris County, Texas treating an average of 2.53 million gallons per day against a permitted design capacity of 3 MGD, serving about 13,370 residents. It discharges under NPDES permit TX0033243 (effective), which expires in February 2028, with 13 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in December 2025.
Treatment technology
Treatment structures and unit processes at Greenwood Forest WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 13
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Greenwood Forest WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $125,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Dec 2025
Harris County WCID No. 109
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $125,000
EPA's description of the case:
“On December 16, 2025, EPA Region 6 issued an Administrative Order (AO) under its authority pursuant to Section 309 of the Clean Water Act to Harris County WCID No. 109 WWTF. The AO was issued in…”
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Source: EPA ECHO, civil enforcement case 06-2026-1718.
Full case history with a free Klarifi account
Every action against Greenwood Forest WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Houston
Houston's capital improvement plan lists 22 water, sewer and wastewater line items worth $1.3B starting 2025–2025. The largest budgeted items are shown here.
All water and sewer capital projects in Houston →
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Plant Improvements | $353,943,200 | 2025–2025 |
| Wastewater Treatment Plant Consolidation | $166,807,000 | 2025–2025 |
| Surface Water Transmission Program | $132,740,144 | 2025–2025 |
| Neighborhood Sewer Rehab Program | $96,000,000 | 2025–2025 |
| Pump Station Program | $87,851,600 | 2025–2025 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Greenwood Forest WWTP.
No verified contacts on file yet
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Greenwood Forest 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 October 26, 2026; facility record last updated May 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms