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Wastewater treatment plants in Texas

1244 facilities · 2,511 MGD combined flow

Klarifi tracks 1,244 publicly owned wastewater treatment plants in Texas with a combined average flow of 2,511 MGD, serving about 17,213,061 residents. 373 plants treat more than 1 MGD and 44 more than 10 MGD; 338 use lagoon systems and 67 have digesters or biogas infrastructure. The largest is Village Creek Reclamation Facility in Arlington at 147.27 MGD. 143 NPDES permits expire this year and 245 next year.

Every plant below links to a profile with average and design flow, the NPDES permit and its expiry, a three-year compliance snapshot and the capital projects planned in its city. Treatment technology and verified contacts are shown with a free Klarifi account. Showing facilities 1–200 of 1244 by average flow — browse the rest with the page links below.

800 plant locations in Texas; dot size follows average flow. Boundaries: U.S. Census Bureau.

NPDES permits and renewals in Texas

Every plant discharges under an NPDES permit that is renewed every five years, usually with tighter limits. The renewal year is the year a plant budgets for upgrades.

All NPDES permits in Texas →143 permits expiring in 2026 →245 permits expiring in 2027 →222 permits expiring in 2028 →Find plants near you on the map →

Largest wastewater treatment plants in Texas

The 10 largest publicly owned wastewater treatment plants in Texas by average flow, with NPDES permit, expiry and three-year violation count. Source: EPA ICIS-NPDES via Klarifi.
FacilityCityAvg flow (MGD)Design (MGD)NPDES permitExpiresViolations (3y)
Village Creek Reclamation FacilityArlington147.27166TX0047295Jan 20293
Dos Rios Water Recycling CenterSan Antonio124.77125TX0077801Jun 202544
City Of Dallas Central WWTPDallas118.1200TX0047830Apr 202711
Walnut Creek WWTPAustin69.41100TX0046981Mar 20250
Southwest WWTPHouston5560TX0062995Sep 202773
South Austin Regional WWTP ElectricalDel Valle52.1975TX0071889Jun 20310
South Mesquite Regional Wastewater Treatment PlantMesquite43.3141TX0047431Aug 202724
Leon Creek Water Recycling CenterSan Antonio41.2346TX0052639Jul 20275
Hillebrandt WWTPBeaumont34.2346TX0046990Apr 202922
Roberto R Bustamante WWTPEl Paso33.0739TX0101605Apr 203035

Treatment technology for each plant is shown with a free Klarifi account. Create one →

The 50 largest plants in Texas →EPA enforcement actions in Texas →Texas capital improvement plans →

Texas plants by treatment technology

Activated sludge and clarifiers (691)Lagoon systems (339)Oxidation ditches (261)Anaerobic digesters and biogas (68)Chlorine disinfection (14)

All 1,244 plants in Texas

FacilityCityFlow (MGD)
Village Creek Reclamation FacilityArlington147.27
Dos Rios Water Recycling CenterSan Antonio124.77
City Of Dallas Central WWTPDallas118.1
Walnut Creek WWTPAustin69.41
Southwest WWTPHouston55
South Austin Regional WWTP ElectricalDel Valle52.19
South Mesquite Regional Wastewater Treatment PlantMesquite43.31
Leon Creek Water Recycling CenterSan Antonio41.23
Hillebrandt WWTPBeaumont34.23
Roberto R Bustamante WWTPEl Paso33.07
Brushy Creek Regional Wastewater System - EastRound Rock28.7
Waco Metropolitan Area Regional Sewarge SystemWaco28.36
City Of Garland Rowlett Creek WWTFGarland25.28
Southeast Water Reclamation PlantLubbock21.94
Oso WWTPCorpus Christi21.26
Pecan Creek Water Reclamation PlantDenton20.72
City Of HoustonHouston20.08
Northwest WWTPHouston19.83
Almeda Sims WWTPHouston18.59
Bell County Wcid #1 Wastewater Treatment FacilityKilleen17.65
City Of Houston Upper Brays WWTFHouston17.19
Port Arthur Main WWTFPort Arthur16.99
Washburn Tunnel FacilityPasadena15.54
Keegans Bayou WWTPHouston15.14
Turkey Creek WWTFHouston14.84
City Of Texas CityTexas City14.65
City Of Longview Main WWTPLongview14.44
Denton Creek Regional WWTFRoanoke14.01
New Vince Bayou WWTFPasadena13.95
Northeast WWTPHouston13.71
Temple Belton WWTPBelton13.65
Freshwater Supply District 23Houston13.57
Dallas Salmon WWTPLeague City12.64
South Regional Waste Water Treatment FacilityTexarkana12.51
Muddy Creek Regional WWTPWylie12.18
West District WWTFHouston12.11
Haskell R. Street Wastewater Treatment PlantEl Paso11.57
City Of Tyler- Westside Wastewater Treatment PlantTyler10.94
South Laredo WWTPLaredo10.86
Laredo City Of Sewer PlantLaredo10.77
Hamby WWTPHamby10.57
River Road Wastewater Treatment PlantWichita Falls10.56
Conroe Southwest Regional WWTPConroe10.4
Cibolo Creek Municipal Authority WWTPSchertz10.39
Blackhawk Regional WWTPHouston9.87
City Of Nederland Wastewater Treatment PlantNederland9.76
Carters Creek Wastewater Treatment PlantCollege Station9.6
Medio Creek Water Recyc. Ctr.San Antonio9.52
Little Cedar Bayou Wastewater Treatment FacilityLa Porte9.24
Chocolate Bayou Wastewater Treatment FacilitiesHouston9.12
Robindale WWTPBrownsville9.12
South Mission 1 WWTPMission9.06
Robert T. Savely Water Reclamation FacilityHouston9
Beltway WWTPHouston8.87
City Of Tyler - Southside Wastewater Treatment PlantTyler8.82
Branch Regional Water Reclamation WWTPLewisville8.62
Bob Derrington Water Reclamation PlantOdessa8.49
40-Acre FacilityTexas City8.07
Gulf Coast Wat.Reclm.Ctr.-WWTPPort Arthur8.06
Atascocita Regional WWTPHouston8
San Marcos WWTPSan Marcos7.76
Northbelt WWTFHouston7.75
Burton Creek Wastewater Treatment PlantBryan7.56
STP 2a WWTPNacogdoches7.52
City Of GalvestonGalveston7.29
Jackson Street WWTPOrange7.21
River Road WWTPAmarillo7.16
Red Oak Creek Regional WWTPRed Oak7.15
Salatrillo Creek WWTPConverse7.15
Ntmwd Stewart Creek West Wastewater Treatment PlantFrisco7.09
City Of Lufkin Wastewater Treatment PlantLufkin7.09
Clute-Richwood WWTPClute7.01
Town Of Flower Mound WWTPFlower Mound6.92
Harlingen WWTPHarlingen6.87
Sabine Creek WWTPWylie6.75
Kingwood Central WWTPHouston6.73
West District Wastewater Treatment PlantBaytown6.53
Su-Regional WWTF PlantHouston6.48
Galveston County Wcid 1 WWTPDickinson6.45
City Of Deer ParkDeer Park6.44
Sugar Land South WWTPSugar Land6.41
Victoria Regional WWTPVictoria6.4
Lakeview Regional Water Reclamation PlantLewisville6.31
Central District Wastewater Treatment PlantBaytown6.24
City Of Pharr WWTPPharr6.19
City Of Sugar Land North Wastewater Treatment PlantSugar Land6.09
City Of Alvin WWTPAlvin6.08
Southeast WWTPHouston6.01
City Of PflugervillePflugerville6
Mountain Creek Reg WWTPMidlothian5.89
Bell Co Wcid 1 WWTP 3Killeen5.78
Harris Co. Wcid 21 WWTPChannelview5.71
Mustang Creek WWTPTaylor5.69
Sagemont WWTPHouston5.64
Intercontinental Airport WWTPHouston5.5
Homestead WWTPHouston5.47
Galveston Airport Wastewater Treatment PlantGalveston5.41
Riverbend Reg Water Reclamation FacilityLewisville5.41
Doshier Farm Wastewater Treatment PlantTemple5.27
Greenville Wastewater Reclamation CenterGreenville5.23
John Hargrove Water Reclamation FacilityPearland5.2
Chelford City Regional Wastewater Treatment PlantHouston5.1
Steep Bank/flat Bank WWTPMissouri City5.07
City Of La-Marque Wastewater Treatment FacilityLa Marque5.07
City Of Kyle WWTPKyle5.01
City Of South HoustonSouth Houston4.96
City Of Corpus ChristiCorpus Christi4.83
The Woodlands WWTP 2The Woodlands4.78
Kings Creek WWTPTerrell4.75
City Of Cleburne Wastewater Treatment PlantCleburne4.75
Eagle Pass STPEagle Pass4.75
City Of Katy Waste Water Treatment PlantKaty4.66
Stewart Creek Wastewater Treatment PlantThe Colony4.62
South Kuehler WWTFNew Braunfels4.62
Conroe Central WWTPConroe4.62
Harris County Wcid 47 WWTPHouston4.49
San Jacinto River Authority WWTP 2The Woodlands4.49
Oyster Creek WWTPAngleton4.43
White Oak WWTPHouston4.42
Sulphur Springs WWTFSulphur Springs4.39
Fort Bend County Wcid 2Stafford4.31
City Of HitchcockHitchcock4.27
Wastewater Treatment PlantParis4.27
City Of Grapevine - Peach Street Plant WWTPGrapevine4.22
Main WWTPGalveston4.11
Paw Paw WWTFDenison4.1
Humble, City Of Southwest WWTPHumble4
Easthaven WWTPHouston3.92
Clinton Park WWTPHouston3.91
City Of Ennis Wastewater Treatment PlantEnnis3.87
City Of Corsicana LandfillCorsicana3.85
Lumberton Municipal Utility DistrictLumberton3.79
Reflection Bay Water Reclamation FacilityPearland3.71
Harris County Wcid 111 WWTPHouston3.68
Odessa South Industrial WWTPOdessa3.68
Walnut Branch WWTPSeguin3.68
San Gabriel WWTPGeorgetown3.58
Weslaco North WWTPWeslaco3.57
Kleinwood Central Wastewater Treatment PlantSpring3.57
Porter Mud WWTPPorter3.54
Little Elm WWTPLittle Elm3.51
Oak Lane WWTPVidor3.45
City Of Mount Pleasant Wastewater Treatment PlantMount Pleasant3.45
West Memorial MudKaty3.39
Sam C Mckenzie Jr Water Reclamation FacilityNew Braunfels3.38
Memorial Villages Wa WWTPHouston3.35
City Of Kilgore Wastewater Treatment PlantKilgore3.34
City Of Carthage Water & SwrCarthage3.34
Aj Brown Parker Creek WWTFHuntsville3.33
City Of Harker HeightsHarker Heights3.32
Floyd Branch Regional Wastewater Treatment PlantRichardson3.3
City Of Bay City WWTPBay City3.25
North Kuehler WWTPNew Braunfels3.2
Double Creek Wastewater Treatment PlantJacksonville3.2
Odem Street WWTPVictoria3.2
Williamsburg RegionalKaty3.14
Pecan Branch WWTPGeorgetown3.14
City Of Bonham WWTPBonham3.13
Richmond Regional Wastewater Treatment PlantRichmond3.09
Moore Street Waste Water Treatment PlantBeeville3.06
Martinez Iv WWTPSan Antonio3.03
City Of BrenhamBrenham3.03
City Of Brownwood Wastewater Treatment PlantBrownwood3.01
Willowood WWTPHouston3
City Of PalestinePalestine3
Weatherford FacilityWeatherford2.93
City Of Pearland Barry Rose W. W. Treatment PlantPearland2.89
Harris County Fwsd 61 WWTPCypress2.85
Quail Valley WWTPMissouri City2.78
Jackrabbit Road Pud WWTPHouston2.75
City Of Gainesville Wastewater Treatment PlantGainesville2.72
City Of San Juan WWTPSan Juan2.71
Southwest Water Reclamation FacilityLeague City2.71
City Of Leander WWTFLeander2.7
City Of DaytonDayton2.7
City Of BellaireBellaire2.66
Geronimo Creek Wastewater Treatment PlantSeguin2.64
Tamu Main Campus WWTPCollege Station2.6
Southside WTPHenderson2.57
Timber Lane Utility District WWTPHouston2.57
City Of SeabrookCity Of Seabrook2.56
City Of Big Spring Water Reclamation Plant WWTPBig Spring2.55
Harris County Wcid 84 WWTPChannelview2.53
Cedar Bayou WWTFHuffman2.53
Greenwood Forest WWTPHouston2.53
New Caney Mud WWTPNew Caney2.51
Copperfield Plant WWTPHouston2.51
Renn Road Mud WWTPHouston2.51
City Of Cedar Park WRFCedar Park2.48
City Of Copperas CoveCopperas Cove2.42
Lynn'S Bayou WWTPPort Lavaca2.41
Imperial Valley WWTPHouston2.4
Lake Forest Regional WWTPHouston2.39
Harris Co Mud 387 WWTPSpring2.38
Hutto South WWTPHutto2.38
Metro Central WWTPHouston2.36
San Leon Mud-Plant - 443 24th AveSan Leon2.35
City Of West ColumbiaWest Columbia2.31
City Of Freeport Central WWTFFreeport2.28
Laguna Madre WWTPCorpus Christi2.28

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Wastewater treatment 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 October 26, 2026.

Wastewater terms: WWTP · POTW · MGD · NPDES permit · Centrate · Ozonation · all terms

Cite this page

Journalists, researchers and educators are welcome to quote these figures. Please credit Klarifi as the source and link to this page.

Klarifi. “Wastewater treatment plants in Texas.” Updated October 26, 2026. https://klarifi.io/facilities/texas

Need a custom cut of the data for a state, a county or a list of plants? Email info@klarifi.io.

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