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World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in the United States

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All countries

17,009 inventory records · EPA Clean Watersheds Needs Survey 2022

Data years: 2022. The inventory date does not establish current operation.

States

17,009 results

CompareNameNative sizeYear
Gravette WWTPGravette0.56 MGD (million gallons per day)2022
CREEDE WWTPCreede0.56 MGD (million gallons per day)2022
NEWBERRY WWTPNewberry0.56 MGD (million gallons per day)2022
Idaho City Rapid Infliltration BsnIdaho City0.56 MGD (million gallons per day)2022
ST JOSEPH STPSaint Joseph0.56 MGD (million gallons per day)2022
OSAWATOMIE WWTPOsawatomie0.56 MGD (million gallons per day)2022
DEQUINCY SEWER SYSTEMDequincy0.56 MGD (million gallons per day)2022
VAN BUREN SAFVan Buren0.56 MGD (million gallons per day)2022
Greene Co Cedarville WWTP and SewersDayton0.56 MGD (million gallons per day)2022
VERNONIA STPVernonia0.56 MGD (million gallons per day)2022
Custer, City ofCuster0.56 MGD (million gallons per day)2022
Stamford WWTPStamford0.56 MGD (million gallons per day)2022
NW Harris Co MUD #29 WWTPHouston0.56 MGD (million gallons per day)2022
WEST POINT SEWERAGE SYSKing William0.56 MGD (million gallons per day)2022
Beaumont Place STPBeaumont0.557 MGD (million gallons per day)2022
ROLAND STLRoland0.556 MGD (million gallons per day)2022
ALBANY WWTPAlbany0.552 MGD (million gallons per day)2022
CORDOVA WWTPCordova0.55 MGD (million gallons per day)2022
Ferndale WWTFFerndale0.55 MGD (million gallons per day)2022
YOUNTVILLE-VETERANS WWTFYountville0.55 MGD (million gallons per day)2022
IONE WWTFIone0.55 MGD (million gallons per day)2022
LAKEPORT SOUTH WWTFLakeport0.55 MGD (million gallons per day)2022
North Key Largo Utility CorporationKey Largo0.55 MGD (million gallons per day)2022
STOCKTON STWStockton0.55 MGD (million gallons per day)2022
GIRARD STPGirard0.55 MGD (million gallons per day)2022
BRIGHTON STPBrighton0.55 MGD (million gallons per day)2022
MOUNT OLIVE-NORTH STPMount Olive0.55 MGD (million gallons per day)2022
JOHNSTON CITY STPJohnston City0.55 MGD (million gallons per day)2022
JASONVILLE WWTPJasonville0.55 MGD (million gallons per day)2022
FAIRMOUNT, STPFairmount0.55 MGD (million gallons per day)2022
MARENGO STLMarengo0.55 MGD (million gallons per day)2022
LYONS WWTPLyons0.55 MGD (million gallons per day)2022
LINDSBORG WWTPLindsborg0.55 MGD (million gallons per day)2022
S. CAPE ELIZABETH WWTFCape Elizabeth0.55 MGD (million gallons per day)2022
Manchester WWTP & Coll. Sys.Manchester0.55 MGD (million gallons per day)2022
CHESANING STPChesaning0.55 MGD (million gallons per day)2022
WAKEFIELD TWP STPWakefield0.55 MGD (million gallons per day)2022
MOUNTAIN IRON WWTFMountain Iron0.55 MGD (million gallons per day)2022
OLIVIA WWTPOlivia0.55 MGD (million gallons per day)2022
GAYLORD WWTPGaylord0.55 MGD (million gallons per day)2022
Platte City WWTPPlatte City0.55 MGD (million gallons per day)2022
Versailles WWTPVersailles0.55 MGD (million gallons per day)2022
COLUMBIA FALLS WWTPColumbia Falls0.55 MGD (million gallons per day)2022
CHADRON, WWTPChadron0.55 MGD (million gallons per day)2022
Waterville Valley WWTFWaterville Valley0.55 MGD (million gallons per day)2022
Medford Lakes Borough - CS/STPMedford0.55 MGD (million gallons per day)2022
Weedsport (V) WWTPWeedsport0.55 MGD (million gallons per day)2022
SHALLOTTE WWTPShallotte0.55 MGD (million gallons per day)2022
LIBERTY WWTPLiberty0.55 MGD (million gallons per day)2022
GREATER BADIN WWTPBadin0.55 MGD (million gallons per day)2022
Carrollton WWTP & Sewer SystemCarrollton0.55 MGD (million gallons per day)2022
Mahoning Co New Middletown WWTPNew Middletown0.55 MGD (million gallons per day)2022
New Richmond WWTP & Sewer SystemNew Richmond0.55 MGD (million gallons per day)2022
FREDERICK WWTFrederick0.55 MGD (million gallons per day)2022
Propsper WWTPProsper0.55 MGD (million gallons per day)2022
Barrett Station WWTPCrosby0.55 MGD (million gallons per day)2022
Tara WWTPRichmond0.55 MGD (million gallons per day)2022
Morrisville Village WWTFMorrisville0.55 MGD (million gallons per day)2022
CLARKSVILLE STPClarksville0.55 MGD (million gallons per day)2022
POCAHONTAS CO PSD WWTPSlatyfork0.55 MGD (million gallons per day)2022
PCPSD - SNOWSHOE VALLEY WWTPSnowshoe0.55 MGD (million gallons per day)2022
MOSINEE WWTPMosinee0.55 MGD (million gallons per day)2022
WHEATLAND LAGOONWheatland0.55 MGD (million gallons per day)2022
CULVER WWTPCulver0.548 MGD (million gallons per day)2022
Chatham (V) WPCFChatham0.548 MGD (million gallons per day)2022
TURTLE LAKE STPTurtle Lake0.546 MGD (million gallons per day)2022
CORNING WWTPCorning0.543 MGD (million gallons per day)2022
LODI WWTPLodi0.542 MGD (million gallons per day)2022
Royston WPCPRoyston0.54 MGD (million gallons per day)2022
LANAI CITY WWTFLanai City0.54 MGD (million gallons per day)2022
PAXTON STPPaxton0.54 MGD (million gallons per day)2022
CARTHAGE ST FACCarthage0.54 MGD (million gallons per day)2022
FARMINGTON STPFarmington0.54 MGD (million gallons per day)2022
MARION WWTPMarion0.54 MGD (million gallons per day)2022
SCOTT CITY WWTPScott City0.54 MGD (million gallons per day)2022
Hadley Sewerage Collection System and WWTFHadley0.54 MGD (million gallons per day)2022
HOLDREGE WWTPHoldrege0.54 MGD (million gallons per day)2022
Bristol WWTFBristol0.54 MGD (million gallons per day)2022
Wintersville WWTP & Sewer SystemSteubenville0.54 MGD (million gallons per day)2022
NEWCASTLE PWA WWTNewcastle0.54 MGD (million gallons per day)2022
MADRAS SWWTPMadras0.54 MGD (million gallons per day)2022
JEFFERSON STPJefferson0.54 MGD (million gallons per day)2022
DAYTON STPDayton0.54 MGD (million gallons per day)2022
PATTON BORO STPPatton0.54 MGD (million gallons per day)2022
Grand Saline WWTPGrand Saline0.54 MGD (million gallons per day)2022
El Lago WWTPSeabrook0.54 MGD (million gallons per day)2022
Castleton WWTFCastleton0.54 MGD (million gallons per day)2022
OKANOGAN S/T FAC.Okanogan0.54 MGD (million gallons per day)2022
ARBUCKLE PSDMinden0.54 MGD (million gallons per day)2022
PORT EDWARDS WWTPPort Edwards0.54 MGD (million gallons per day)2022
VIROQUA STPViroqua0.54 MGD (million gallons per day)2022
George West WWTPGeorge West0.539 MGD (million gallons per day)2022
WEIPPE S/T SystemWeippe0.536 MGD (million gallons per day)2022
BARNESVILLE WWTPBarnesville0.534 MGD (million gallons per day)2022
NEWLAND WWTPNewland0.533 MGD (million gallons per day)2022
Franz Road WWTPHouston0.533 MGD (million gallons per day)2022
HOISINGTON WWTPHoisington0.531 MGD (million gallons per day)2022
Planada WWTFPlanada0.53 MGD (million gallons per day)2022
Claxton LASClaxton0.53 MGD (million gallons per day)2022
RIVERTON SEWER & STPRiverton0.53 MGD (million gallons per day)2022

Regulatory context

General reference. This is not an exhaustive review of applicable law.

United States: Clean Water Act / NPDES

NPDES regulates pollutant discharges from point sources to waters of the United States. The permit sets limits and monitoring conditions. A CWNS code identifies an inventory record, not an NPDES permit.

  • Permit identifier and permitting authority: EPA or an authorized state.
  • Outfall and receiving water; sewer connections follow a different control route.
  • Current permit conditions, limits and dated measurements; these are not included in CWNS.

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.