Washburn Tunnel Facility
1002 North Richey, Pasadena, TX 77506 · Harris County · Publicly Owned Treatment Works
- Average flow
- 19.4 MGD
- Design flow
- 54.7 MGD
- NPDES permit
- TX0052591
- Administratively continued
- Permit expires
- April 2019
- Population served
- —
- CWNS 2022
Washburn Tunnel Facility is a publicly owned wastewater treatment plant in Pasadena, Harris County, Texas treating an average of 19.4 million gallons per day against a permitted design capacity of 54.7 MGD. It discharges under NPDES permit TX0052591 (administratively continued), which expires in April 2019, with 11 recorded violations in the last three years. EPA has recorded 5 formal enforcement actions naming the plant, the latest in February 2021.
Treatment technology
2 treatment structures and unit processes identified at Washburn Tunnel Facility.
Available with a free Klarifi account
See the full treatment train at Washburn Tunnel Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 5
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 Washburn Tunnel Facility in EPA's ICIS system.
- Formal actions
- 5
- 0 since FY2020
- Penalties assessed
- $156,000
- all cases
- Compliance actions
- $14M
- required by EPA orders
- EPA inspections
- 1
- latest Feb 2008
Latest case · Feb 2021
Gulf Coast Disposal Authority
Administrative order · CWA, NPDES Permit Violations · Unilateral Administrative Order Without Adjudication · Compliance actions $11M
EPA's description of the case:
“Permittee, Gulf Coast Disposal Authority, owned or operated a wastewater treatment plant located on the south bank of the Houston Ship Channel in Harris County, Houston, Texas. The violation alleged…”
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Source: EPA ECHO, civil enforcement case 06-2011-1713.
1 informal enforcement action (notices of violation and similar), the latest in Mar 2009.
Full case history with a free Klarifi account
Every action against Washburn Tunnel Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Pasadena
Pasadena's capital improvement plan lists 43 water, sewer and wastewater line items worth $164M starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Pasadena →
| Project | Budget | Years |
|---|---|---|
| Golden Acres WWTP SW Det & Flow Diver | $13,500,000 | 2025–2026 |
| Bay Area Blvd Water Pressure Improv | $11,086,950 | 2027–2027 |
| Pas Ind Dis 36in Transmission Line Ph II | $10,698,930 | 2028–2028 |
| Pas Ind Dis 36in Transmission Line Ph I | $10,592,400 | 2027–2027 |
| CWA Pump Station Rehabilitation | $9,353,290 | 2029–2029 |
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 Washburn Tunnel Facility.
No verified contacts on file yet
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Nearby wastewater treatment plants in Texas
Pasadena · 1 mi away
25 MGD
Houston · 3 mi away
2.87 MGD
Jacinto City · 3 mi away
1.25 MGD
Houston · 3 mi away
—
South Houston · 4 mi away
4.88 MGD
Houston · 4 mi away
9.97 MGD
Houston · 5 mi away
0.5 MGD
Houston · 5 mi away
5.07 MGD
Washburn Tunnel Facility: 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 21, 2026; facility record last updated August 5, 2026.