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Wastewater Treatment Plants in Louisiana

267 facilities · 471 MGD combined flow

Below are publicly owned wastewater treatment plants in Louisiana tracked by Klarifi, with average flow, treatment technology and NPDES permit details. Click a facility for its full profile. Showing the 200 largest by flow of 267 total — search the full set in the Klarifi platform.

FacilityCityFlow (MGD)
Clarence Sewage Treatment PlantClarence200
South Wastewater Treatment PlantBaton Rouge40
Jefferson Parish Department Of Sewerage- East Bank WWTPElmwood30.81
Baton Rouge, City OfScotlandville14.75
Sewerage & Water Board Of New Orleans Westb Ank SewageNew Orleans14.18
Jefferson Parish Department Of Sewerage- Marrero WWTPMarrero7.67
St. Bernard Parish - Munster WWTPChalmette7.63
Plant BLake Charles7.05
Hammond North STPHammond5.64
Lafayette Consolidated Government - Ambassador Caffery STPLafayette5.44
Red River Wastewater Treatment PlantBossier City5.12
Shreveport North Regional WWTPShreveport4.84
Monroe, City Of (wpc Cntr)Monroe4.65
Northeast Wastewater Treatment PlantBossier City3.87
Lake Charles, City Of-Plant ALake Charles3.37
Slidell, City OfSlidell3.29
Wards 5 & 8 Joint Sewerage CommisionPatterson3.27
St. Charles Parish Council--Destrehan WWTPDestrehan3.19
Lafayette Consolidated Government - East WWTPLafayette3.03
Ruston, City Of- Northside Wastewater Treatment PlantRuston2.97
Opelousas, City Of- Candy Street WWTPOpelousas2.87
Thibodaux, City Of- Wastewater Treatment FacilityThibodaux2.67
Denham Springs Wastewater Treatment FacilityDenham Springs2.49
Abbeville Wastewater Treatment FacilityAbbeville2.47
St. Charles Parish CouncilHahnville2.45
Gretna City Of Wastewater Treatment PlantGretna2.42
Bridge City Wastewater Treatment PlantBridge City2.38
Village Of Pine Prarie WWTFPine Prairie2.19
Tangipahoa Regional Solid Waste FacilityAmite2.05
Luling Oxidation PondLuling1.92
Sewerage District #1 Of Iberia Parish & City Of New Iberia- Tete Bayou WWTPNew Iberia1.86
Jennings, City Of- WWTPJennings1.73
Carrollton Water Purification PlantNew Orleans1.69
Breaux Bridge Wastewater Treatment PlantBreaux Bridge1.65
Harahan, City OfHarahan1.63
City Of MandevilleMandeville1.47
Crowley WWTPCrowley1.47
Consolidated Waterworks/sewerage District No 1Benton1.43
Bastrop Main Wastewater Treatment FacilityBastrop1.41
Youngsville Wastewater Treatment FacilityYoungsville1.39
Broussard, City OfBroussard1.38
Donaldsonville, City OfDonaldsonville1.36
St John The Baptist Parish- Reserve WWTPReserve1.33
Town Of Vidalia Waste Water Treatment PlantVidalia1.3
Natchitoches, City OfNatchitoches1.27
Lafayette Consolidated Government - Northeast WWTPLafayette1.24
Ponchatoula, City Of- Wastewater Treatment FacilityPonchatoula1.23
Oakdale, City OfOakdale1.17
Rayville WWTFRayville1.17
Deridder City Of - Deridder Animal ShelterDeridder1.15
Phoenix Wastewater Treatment PlantBraithwaite1.05
Delhi, Town Of - WWTPDelhi1.02
Plaquemines Parish Government- Buras WWTPBuras0.94
Leesville, City OfLeesville0.92
Tallulah, City Of- Wastewater Treatment PlantTallulah0.88
Ville Platte, City OfVille Platte0.83
Thibodaux, City Of- North Thibodaux WWTPThibodaux0.73
Franklinton STPFranklinton0.72
Village Of Parks WWTFParks0.7
Marksville, City OfMarksville0.7
New Roads, City Of- Wastewater Treatment PlantNew Roads0.7
Town Of Delcambre WWTPDelcambre0.7
Port Allen Water SystemPort Allen0.69
Town Of Iowa Sd #1Iowa0.64
Scott Wastewater Treatment FacilityScott0.64
Kaplan STPKaplan0.63
Addis Wastewater Treatment PlantAddis0.63
Riverbend Oxidation Pond - Poydras-Verret WetlandChalmette0.62
Winnfield, City Of- Wastewater Treatment PlantWinnfield0.62
St. Martinville, City OfSt. Martinville0.61
Town Of Sunset Water SystemSunset0.61
Vermillion Parish Solid Waste LandfillAbbeville0.59
Carencro Wastewater Treatment FacilityCarencro0.59
Oak Grove, Town Of- WWTPOak Grove0.58
Lake Arthur, Town OfLake Arthur0.58
Mo-Dad Utilities, Llc - Live Oak Landing SubdivisionDenham Springs0.57
St. Tammany Parish Government - Castine Regional Sewage Treatment PlantMandeville0.52
Plaquemines Parish Government- Boothville WWTPBoothville0.51
Gramercy WWTPKenner0.51
Cullen, Town OfCullen0.51
Grambling, City OfGrambling0.5
Kentwood, Town Of- Wastewater Treatment FacilityKentwood0.5
Town Of Jonesville Water System-DisinfectionJonesville0.49
Grand Coteau Wastewater Treatment FacilityGrand Coteau0.49
Cameron Parish Sewer Dist # 1Cameron0.47
Springhill, City OfSpringhill0.47
Vinton, Town Of- Treatment PlantVinton0.46
St Tammany Parish-Cross GateSlidell0.46
Greenwood Municipal Wastewater Treatment FacilityGreenwood0.45
Homer WWTPHomer0.45
Town Of Jena Water SystemJena0.44
Town Of Lockport - Lockport Sewer PlantLockport0.44
Haughton, Town OfHaughton0.43
Ramos Wetland AssimilationAmelia0.42
Jeanerette, City OfJeanerette0.42
Westwood Regional STPMandeville0.41
Farmerville Waste Water Treatment PlantFarmerville0.4
Garyville WWTPGaryville0.39
Plaquemines Par (port Sulphur)Port Sulphur0.38
Amite City, Town Of- Amite City STPAmite0.36
Simmesport, Town Of (wwtp)Simmesport0.36
Jackson, Town OfJackson0.36
Town Of Mamou WWTFMamou0.35
Coushatta Wastewater Treatment FacilityCoushatta0.34
North OxidationpondJonesboro0.34
West St Tammany Regional STPMadisonville0.33
Benton Wastewater Treatment PlantBenton0.32
Town Of St. Joseph WWTPSaint Joseph0.32
Independence, Town Of- Wastewater Treatment PlantIndependence0.32
Stephensville WWTPMorgan City0.31
Clinton Wastewater Treatment PlantClinton0.31
Welsh, Town OfWelsh0.31
Pinecrest WWTPPineville0.31
White Castle WWTPWhite Castle0.3
Sewer District #7 WWTPShreveport0.3
Haynesville Town OfHaynesville0.28
Oberlin, Town Of (stp)Oberlin0.28
Carencro, City Of - Manola Street WTPCarencro0.28
Suma Crossing STPLivingston0.28
Timber Branch Ii STPMandeville0.27
Colfax Wastewater Treatment FacilityColfax0.27
Livingston Parish Sewer District- Buddy Ellis Road Regional POTWDenham Springs0.26
Blanchard, Town Of - Wastewater Treatment PlantBlanchard0.25
Ferriday Wastewater Treatment FacilityFerriday0.25
Merryville, Town Of - Wastewater Treatment FacilityMerryville0.24
Sterlington, Town OfSterlington0.23
Brusly Wastewater Treatment FacilityBrusly0.21
Ringgold Water SystemRinggold0.21
Basile, Town Of WWTPBasile0.2
Highway 22 STPMadisonville0.2
Iota, Town Of-Wastewater TreatIota0.2
Lake Providence, Town Of- South Pond WWTFLake Providence0.19
Erath, Town Of (wwtp)Erath0.19
Mansura, Town OfMansura0.19
Country Club Subdivision WWTPThibodaux0.19
Town Of New LlanoNew Llano0.19
Facultative LagoonMontgomery0.19
Town Of Erath WTPErath0.18
Pointe Coupee Sd #1 LagoonNew Roads0.18
Columbia Heights Wastewater Treatment FacilityColumbia0.18
Village Of Maurice - South WWTPMaurice0.18
Carville WWTFSaint Gabriel0.17
Port Barre, Town OfPort Barre0.17
Mansfield, City Of- Sewage Treatment FacillityMansfield0.17
Many, Town OfMany0.17
Elton, Town Of-Wastewater TreaElton0.17
Boyce, Town Of- Wastewater Treatment FacilityBoyce0.16
Centerville Treatment PlantCenterville0.16
City Of Plaquemine Water SystemPlaquemine0.16
Town Of JonesboroJonesboro0.15
North Monroe Sew District #1Monroe0.15
Arcadia, Town Of-WWTPArcadia0.15
Town Of Urania Water System-Z-AerationUrania0.14
Town Of Rosepine Water SystemRosepine0.14
Four Corners Treatment PlantFour Corners0.14
Pearl River Municipal STPPearl River0.14
Morganza Water System-Well 003 Treatment PlantMorganza0.14
Southwest Regional StfHammond0.14
Maurice, Village Of- Wastewater Treatment PlantMaurice0.13
Winnsboro, Town Of WinnsboroWinnsboro0.13
Lake Providence, Town Of- North PondLake Providence0.13
Glenmora, Town Of Water SysGlenmora0.13
Town Of Church PointChurch Point0.13
Sewerage District No. 1 Of Tangipahoa Parish- Bedico Regional StfPonchatoula0.12
Town Of Jonesboro- East Oxidation PondJonesboro0.12
St Tammany Sewer Dist 4 Wastsewater Treatment FacilityCovington0.12
Sunshine WWTPSunshine0.12
Northwest Hammond Treatment FacilityHammond0.12
Covington Country Club Wastewater Treatment PlantCovington0.12
Town Of Woodworth WWTPWoodworth0.12
Winn Correctional CenterWinnfield0.12
Arnaudville WWTPArnaudville0.11
Town Of LogansportLogansport0.11
Bernice, Town OfBernice0.11
Town Of Lecompte WWTPLecompte0.11
Town Of Duson STPDuson0.11
Town Of Olla Water SystemOlla0.1
Dequincy Wastewater Treatment FacilityDequincy0.1
Livingston Parish Sewer District - Warsaw Landing WWTPSpringfield0.1
Benton Palmetto Park Treatment PlantBenton0.1
Napoleonville StoNapoleonville0.1
Rosethorn WWTPLafitte0.09
St. Gabriel WWTPSaint Gabriel0.09
Sewerage District #1 Of The Parish Of TangipahoaHammond0.09
Greensburg Water SystemGreensburg0.09
Clarks/grayson Wastewater Treatment PlantClarks0.08
Village Of Hessmer Water System-DisinfectionHessmer0.08
Lamar Dixon Expo CenterGonzales0.08
Roseland Water SystemRoseland0.08
St Tammany Parish Government-Northlake Behavorial HospitalMandeville0.08
Loreauville, Village Of- Municipal Sewer Treatment PlantLoreauville0.08
Morse WWTPMorse0.08
Madisonville Town OfMadisonville0.08
Town Of Washington Water SystemWashington0.07
Westport WWTFPort Allen0.07
Gibsland, Town OfGibsland0.07
Tigerville Wastewater Treatment PlantEdgard0.07
St John Central Wastewater PlantEdgard0.07
Folsom, Village OfFolsom0.07
Tallow Creek Subdivision STPCovington0.07

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