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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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14,626 inventory records · HydroWASTE v1.0 / United States

Data years: 2008, 2012. The inventory date does not establish current operation.

States

14,626 results

CompareNameNative sizeYear
Evesham Township MUA Kings Grant STP_CSHW:333605,300 population served2012
MCKENZIE STPHW:374425,300 population served2012
KINGSTON STPHW:375575,300 population served2012
Decatur WWTPHW:378695,300 population served2012
Rusk WWTPHW:379415,300 population served2012
Planada WWTFHW:260185,298 population served2012
ALVA WWTHW:360185,288 population served2012
MONTGOMERY BORO STPHW:366875,287 population served2012
Ottawa WWTP and Sewer SystemHW:353305,286 population served2012
BERLIN STPHW:391055,285 population served2012
CONCORDIA WWTPHW:294525,281 population served2012
LISBON W P C PLANTHW:304315,281 population served2012
Barranquitas WWTPHW:397825,281 population served2012
HARTWELL WPCPHW:272215,274 population served2012
EDGERTON STPHW:392005,273 population served2012
TAOS STPHW:334735,271 population served2012
BUENA VISTA WWTPHW:263935,270 population served2012
ELLOREE WWTPHW:370785,267 population served2008
SUNLAND PARK WWTPHW:334335,259 population served2012
VINTON WWTPHW:291015,257 population served2012
CHEROKEE WWTPHW:285645,253 population served2012
REEDSPORT STPHW:361755,253 population served2012
ROCKY MOUNT STPHW:383375,253 population served2012
Hot Springs Village Cedar CreekHW:254625,252 population served2012
TIPTON WWTPHW:283715,251 population served2012
FRANKLIN WWTFHW:260065,250 population served2012
Hernando County Ridge Manor WWTFHW:269975,250 population served2012
Williams WWTFHW:259945,245 population served2012
HOLTVILLE WWTFHW:261925,240 population served2012
Kiryas Joel V Sewers and WWTPHW:336165,238 population served2012
LEBANON WWTP and Coll SystemHW:383155,238 population served2012
RIPLEY WWTPHW:388735,238 population served2012
MONTEzUMA WPCP 2HW:272565,237 population served2012
MONTICELLO WWTPHW:283785,237 population served2012
LAMAR WWTPHW:321685,232 population served2012
PERRY WWTHW:359245,230 population served2012
MAYVILLE STPHW:393205,221 population served2012
Granville Twp Main STPHW:364885,220 population served2012
ROBINSON TWP MA CAMPBELLS RUN STPHW:368235,219 population served2012
PEVELY WWTPHW:318985,218 population served2012
Hightstown Borough CS_STPHW:332975,216 population served2012
SELLERSBURG WWTPHW:281205,208 population served2012
PRESTON S_T FACILITYHW:274885,204 population served2012
Clinton V WWTPHW:338655,202 population served2012
ASHBURN WPCPHW:271415,200 population served2012
CRISFIELD WWTPHW:306225,200 population served2012
North Royalton WW District BHW:353215,200 population served2012
Strongsville B WWTP and SewersHW:354305,200 population served2012
ROGERSVILLE STPHW:374975,200 population served2012
Los Fresnos WWTPHW:376215,200 population served2012
LYNDON STPHW:382485,200 population served2012
CANTON WPCFHW:265395,196 population served2012
Elida WWTP and Sewer SystemHW:350925,195 population served2012
POOLER_BLOOMINGDALE WPCPHW:270385,193 population served2012
IOWA FALLS WWTPHW:287625,193 population served2012
FRANKENMUTH STPHW:309945,193 population served2012
Chesterfield Township CS_Septic_STPHW:333715,188 population served2012
LOUISA STPHW:300065,180 population served2012
PONCHATOULA PONDHW:303185,180 population served2012
KAPLAN STPHW:303295,177 population served2012
RIDGEFIELD WWTPHW:386475,175 population served2012
Middleborough Wastewater SystemHW:307425,174 population served2012
Winchester Lower Howards Creek WWTPHW:298685,170 population served2012
HARTFORD STPHW:310505,170 population served2012
Little Falls C WWTPHW:338345,168 population served2012
Ticonderoga T STP and On Site SysHW:337945,167 population served2012
SPRING GROVE BORO AUTHHW:365175,162 population served2012
BELLOWS FALLS WPCFHW:382255,161 population served2012
MADRAS STPHW:361465,160 population served2012
Chardon WWTP and Sewer SystemHW:350315,156 population served2012
PCSPSD HAZLETON WWTPHW:389745,153 population served2012
Wellsville V WWTPHW:340565,151 population served2012
CONNELL STPHW:385615,150 population served2012
BOWLING GREEN WWTPHW:317755,145 population served2012
STANSBURY PARKHW:382085,145 population served2012
NAVARRE BEACH STPHW:269935,143 population served2012
EDINBURG WWTPHW:280015,138 population served2012
MANCHESTER WWTPHW:288475,137 population served2012
ANNA STPHW:278275,136 population served2012
MALDEN IND PARK LAGHW:317595,132 population served2012
WILMINGTON SWG TRMT PLANTHW:275665,131 population served2012
GROVE MSA WWTHW:357815,131 population served2012
CLINTON WWTPHW:280525,126 population served2012
WARRENTON STPHW:383665,123 population served2012
MULVANE WWTPHW:292715,118 population served2012
OCEA KSR WWTPHW:300655,117 population served2012
Skaneateles V WWTPHW:339425,116 population served2012
COLVILLE SEW LAGOONHW:386955,116 population served2012
BROOKVILLE STPHW:368595,114 population served2012
SELAH S_T FACILITYHW:387465,113 population served2012
Montgomery Township Stage II CS_STPHW:333115,107 population served2012
HARLAN WWTPHW:287315,106 population served2012
Berthoud Town ofHW:263215,105 population served2012
CONEMAUGH TWP TIRE HILL STPHW:365145,105 population served2012
CLARINDA WWTPHW:285715,104 population served2012
GLADSTONE STPHW:310205,103 population served2012
CLIFTON 2 WEST WWTPHW:263425,100 population served2012
Adairsville North WPCPHW:273245,100 population served2012
ANAMOSA WWTPHW:284815,100 population served2012
Bridgeport WWTPHW:378575,100 population served2012

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.