The 50 largest wastewater treatment plants in Texas
Ranked by average flow · 1,270 MGD combined · 56% of the state's reported flow
Village Creek Reclamation Facility in Arlington is the largest publicly owned wastewater treatment plant in Texas by reported average flow, treating about 142 million gallons per day. The 50 plants below treat 1,270 MGD between them, 56% of the flow reported by all 1,220 plants in the state, and serve about 9,119,349 people. Every plant links to its profile with permit, technology and compliance data.
| # | Facility | City | Avg flow (MGD) | Population | NPDES permit | Expires | Technology | Violations (3y) |
|---|---|---|---|---|---|---|---|---|
| 1 | Village Creek Reclamation Facility | Arlington | 142 | 1,136,072 | TX0047295 | Jan 2029 | Clarifiers, Biogas silos, Biogas balloons | 3 |
| 2 | Dos Rios Water Recycling Center | San Antonio | 105.32 | 1,161,197 | TX0077801 | Jun 2025 | Clarifiers, Aerated lagoons, Biogas silos | 48 |
| 3 | City Of Dallas Central WWTP | Dallas | 104 | 744,579 | TX0047830 | Apr 2027 | Clarifiers, Aerated lagoons, Uncovered lagoons, Biogas silos | 10 |
| 4 | Wilson Creek Regional Wastewater Treatment Plant | Mc Kinney | 70.77 | 244,117 | TX0047911 | Oct 2027 | Clarifiers, Carrousels / oxidation ditches, Biogas balloons | 24 |
| 5 | Walnut Creek WWTP | Austin | 56.6 | 400,000 | TX0046981 | Mar 2025 | Clarifiers, Uncovered lagoons | 0 |
| 6 | Southwest WWTP | Houston | 50.14 | 100,000 | TX0062995 | Sep 2027 | Clarifiers | 68 |
| 7 | Hillebrandt WWTP | Beaumont | 47.3 | 140,984 | TX0046990 | Apr 2029 | Clarifiers, Aerated lagoons, Uncovered lagoons | 24 |
| 8 | South Austin Regional WWTP Electrical | Del Valle | 43.8 | 457,525 | TX0071889 | Jun 2031 | Clarifiers, Biogas balloons | 0 |
| 9 | South Mesquite Regional Wastewater Treatment Plant | Mesquite | 37.57 | 354,544 | TX0047431 | Aug 2027 | Clarifiers, Biogas silos | 23 |
| 10 | Roberto R Bustamante WWTP | El Paso | 32.92 | 377,670 | TX0101605 | Apr 2030 | Clarifiers, Uncovered lagoons, Biogas silos, Biogas balloons | 35 |
| 11 | Leon Creek Water Recycling Center | San Antonio | 32 | 165,587 | TX0052639 | Jul 2027 | Clarifiers | 5 |
| 12 | Pecan Creek Water Reclamation Plant | Denton | 30.27 | 148,099 | TX0047180 | Jul 2028 | Clarifiers, Biogas silos | 8 |
| 13 | City Of Houston | Houston | 28.8 | 100,000 | TX0062201 | Aug 2002 | Clarifiers | 3 |
| 14 | New Vince Bayou WWTF | Pasadena | 25 | 113,435 | TX0117528 | Jul 2026 | Clarifiers, Carrousels / oxidation ditches | 139 |
| 15 | City Of Garland Rowlett Creek WWTF | Garland | 22.38 | 197,170 | TX0024686 | Oct 2030 | Clarifiers, Biogas silos | 6 |
| 16 | Southeast Water Reclamation Plant | Lubbock | 21.96 | 263,075 | TX0106071 | Nov 2024 | Clarifiers, Biogas silos, Biogas balloons | 270 |
| 17 | Waco Metropolitan Area Regional Sewarge System | Waco | 21.83 | 188,342 | TX0026506 | Jul 2030 | Clarifiers, Uncovered lagoons, Biogas silos | 48 |
| 18 | Brushy Creek Regional Wastewater System - East | Round Rock | 20.77 | 284,597 | TX0101940 | Jan 2029 | Clarifiers, Biogas balloons | 33 |
| 19 | South Laredo WWTP | Laredo | 16.98 | 263,966 | TX0085316 | Jun 2031 | Clarifiers, Carrousels / oxidation ditches | 2 |
| 20 | River Road Wastewater Treatment Plant | Wichita Falls | 16.92 | 105,333 | TX0047686 | Jul 2028 | Clarifiers, Aerated lagoons, Biogas silos | 2 |
| 21 | City Of Houston Upper Brays WWTF | Houston | 16.38 | 50,000 | TX0088153 | Aug 2030 | Clarifiers | 26 |
| 22 | Oso WWTP | Corpus Christi | 16.32 | 133,576 | TX0047058 | Sep 2025 | Clarifiers | 1 |
| 23 | Laredo City Of Sewer Plant | Laredo | 16.21 | 130,000 | TX0025461 | Oct 2027 | Clarifiers, Biogas silos | 81 |
| 24 | Bell County Wcid #1 Wastewater Treatment Facility | Killeen | 14.67 | 195,213 | TX0102938 | Feb 2030 | Clarifiers, Carrousels / oxidation ditches | 36 |
| 25 | Northwest WWTP | Houston | 14.58 | 100,000 | TX0063011 | Aug 2030 | Clarifiers | 16 |
| 26 | Robindale WWTP | Brownsville | 13.69 | 80,215 | TX0071340 | Jan 2029 | Clarifiers | 3 |
| 27 | Denton Creek Regional WWTF | Roanoke | 13.6 | 39,473 | TX0104957 | Apr 2029 | Clarifiers, Uncovered lagoons | 0 |
| 28 | City Of Longview Main WWTP | Longview | 13.3 | 81,025 | TX0022217 | Sep 2026 | Clarifiers, Aerated lagoons, Uncovered lagoons, Biogas silos | 11 |
| 29 | Almeda Sims WWTP | Houston | 12.85 | 125,465 | TX0034924 | Mar 2030 | Clarifiers | 15 |
| 30 | Haskell R. Street Wastewater Treatment Plant | El Paso | 12.08 | 181,728 | TX0026751 | May 2030 | Biogas silos, Biogas balloons | 2 |
| 31 | Port Arthur Main WWTF | Port Arthur | 11.9 | 54,634 | TX0047589 | Sep 2030 | Clarifiers | 78 |
| 32 | South Regional Waste Water Treatment Facility | Texarkana | 11.4 | 116,259 | TX0101800 | Jul 2026 | Clarifiers, Biogas silos | 12 |
| 33 | Dallas Salmon WWTP | League City | 11.35 | 15,000 | TX0085618 | Apr 2029 | Clarifiers, Uncovered lagoons | 4 |
| 34 | Keegans Bayou WWTP | Houston | 11.12 | 113,196 | TX0098191 | Jun 2026 | Clarifiers | 11 |
| 35 | Turkey Creek WWTF | Houston | 10.85 | 48,384 | TX0035017 | May 2031 | Clarifiers | 5 |
| 36 | City Of Texas City | Texas City | 10.53 | 48,036 | TX0023949 | Jul 2030 | Clarifiers, Aerated lagoons, Uncovered lagoons | 5 |
| 37 | City Of Tyler- Westside Wastewater Treatment Plant | Tyler | 10.19 | 74,080 | TX0047996 | Feb 2025 | Clarifiers, Carrousels / oxidation ditches, Biogas silos | 35 |
| 38 | Northeast WWTP | Houston | 9.97 | 38,198 | TX0063037 | Jul 2028 | Clarifiers | 15 |
| 39 | Chocolate Bayou Wastewater Treatment Facilities | Houston | 9.94 | 35,068 | TX0063061 | Sep 2027 | Clarifiers | 7 |
| 40 | City Of Nederland Wastewater Treatment Plant | Nederland | 9.82 | 17,460 | TX0026476 | Jan 2031 | Clarifiers, Uncovered lagoons | 20 |
| 41 | Galveston County Wcid 1 WWTP | Dickinson | 9.8 | 27,339 | TX0023655 | Apr 2029 | Clarifiers, Carrousels / oxidation ditches | 1 |
| 42 | Muddy Creek Regional WWTP | Wylie | 9.67 | 47,088 | TX0123561 | Aug 2030 | — | 11 |
| 43 | South Mission 1 WWTP | Mission | 9.49 | 66,255 | TX0070017 | Apr 2028 | Clarifiers, Aerated lagoons, Uncovered lagoons, Carrousels / oxidation ditches | 0 |
| 44 | Conroe Southwest Regional WWTP | Conroe | 9.4 | 50,004 | TX0022268 | Oct 2029 | Clarifiers, Uncovered lagoons | 9 |
| 45 | Temple Belton WWTP | Belton | 9.2 | 61,603 | TX0058378 | Jul 2030 | Clarifiers, Carrousels / oxidation ditches | 25 |
| 46 | West District WWTF | Houston | 9.01 | 50,000 | TX0063002 | Jul 2029 | Clarifiers | 13 |
| 47 | Medio Creek Water Recyc. Ctr. | San Antonio | 8.96 | — | TX0055689 | May 2028 | Clarifiers, Carrousels / oxidation ditches | 2 |
| 48 | Bob Derrington Water Reclamation Plant | Odessa | 8.79 | 106,933 | TX0072800 | Jul 2025 | Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches | 92 |
| 49 | Jackson Street WWTP | Orange | 8.7 | 26,391 | TX0073423 | Apr 2021 | Clarifiers | 194 |
| 50 | Cibolo Creek Municipal Authority WWTP | Schertz | 8.42 | 60,434 | TXR05FI55 | Aug 2026 | Clarifiers, Uncovered lagoons, Biogas silos | 1 |
Largest plants in Texas: 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.