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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
BEMIDJI WWTFHW:3121613,734 population served2012
WEST MIFFLIN THOMPSON RUN STPHW:3681413,733 population served2012
MARIANNA WWTPHW:2693613,725 population served2012
SCOTTS BLUFF WWTPHW:3302113,711 population served2012
MIAMI SOUTHEAST WWTHW:3555213,704 population served2012
STERLING WWTPHW:2629913,700 population served2012
Winder Cedar Cr WPCPHW:2733613,700 population served2012
La Marque Westside WWTPHW:3799313,700 population served2012
BENICIA WWTFHW:2587313,682 population served2012
BOGALUSA STPHW:3011313,675 population served2012
KERMAN WWTFHW:2597813,659 population served2012
AGAT DISTRICT WWTFHW:3973913,656 population served2012
Marysville WWTFHW:2605913,627 population served2012
NORTH LIBERTY WWTPHW:2892713,608 population served2012
MCPHERSON WWTPHW:2943813,600 population served2012
IRON MT KINGSFORD WWTPHW:3111913,597 population served2012
Barnstable Dept of Public WorksHW:3074013,596 population served2012
BARRE CITY WPCFHW:3822313,596 population served2012
Hanover WWTFHW:3317613,581 population served2012
GALIEN RIVER STPHW:3104013,547 population served2012
CARROLLTON WWTPHW:3211113,534 population served2012
MEXICO WWTPHW:3172913,520 population served2012
Arizona City Sanitary DistrictHW:2536413,500 population served2012
WINTER GARDEN REG WWTPHW:2667013,500 population served2012
Panama City Beach STPHW:2689913,500 population served2012
MCMINNVILLE WWTPHW:3744313,500 population served2012
Kuehler Road North WWTPHW:3805713,500 population served2012
Circleville WWTP and Sewer SystemHW:3503413,485 population served2012
Xenia Ford Rd WWTP and SewersHW:3552213,482 population served2012
Synder WWTPHW:3770113,482 population served2012
BELLEFONTE BORO STPHW:3662613,461 population served2012
BRISTOL BORO STPHW:3628413,427 population served2012
SEYMOUR WPCFHW:2659413,420 population served2012
HUNTINGDON BORO STPHW:3650713,418 population served2012
Harrison WWTPHW:2548913,397 population served2012
BLOOMSBURG STPHW:3661113,389 population served2012
Morris Township Woodland STP_CS_SepticsHW:3327113,385 population served2012
LULING STPHW:3030113,374 population served2012
New Providence Borough CS_STPHW:3327413,372 population served2012
WASHINGTON STP 2HW:2766113,325 population served2012
MINDEN TREATMENT PLANTHW:3016913,300 population served2012
KANAWHA FALLS PSD WWTPHW:3884013,298 population served2012
HWY 141 WWTPHW:3189013,293 population served2012
Evesham Township MUA Woodstream STP_CSHW:3335913,275 population served2012
Plymouth Department of Public WorksHW:3070513,269 population served2012
WIXOM STPHW:3096613,263 population served2012
Taylorville Sanitary District WWTPHW:2774313,246 population served2012
PORTLAND STPHW:3748913,240 population served2012
ELKINS WWTPHW:3900113,236 population served2012
Greenville WWTP and Sewer SystemHW:3515513,230 population served2012
Bucyrus WWTP and Sewer SystemHW:3500613,224 population served2012
JUNCTION CITY EAST WWTPHW:2946113,222 population served2012
EAST WENATCHEE STPHW:3857013,220 population served2012
Sweetwater Creek WPCPHW:2733013,200 population served2012
PROUTS NECK W P C FHW:3045013,200 population served2012
DALLAS STPHW:3605013,200 population served2012
CROSSVILLE STPHW:3735813,200 population served2012
Cutler Orosi WWTFHW:2609013,190 population served2012
Geneva WWTP and Sewer SystemHW:3485613,190 population served2012
CHARLES TOWN WWTPHW:3887513,190 population served2012
DOUGLAS SOUTHEAST WPCPHW:2710613,181 population served2012
Pickerington WWTP and Sewer SystemHW:3534713,159 population served2012
JACKSON WWTPHW:3176113,158 population served2012
RED BLUFF WWTFHW:2614813,147 population served2012
FARRELL CITY STPHW:3686713,118 population served2012
LIMERICK TWP KING ROAD STPHW:3622113,074 population served2012
Crescent City WWTFHW:2580813,070 population served2012
Bellefontaine WWTP and Sewer SystemHW:3498513,069 population served2012
MUSCLE SHOALS WWTPHW:2520013,064 population served2012
WORTHINGTON WWTPHW:3124113,060 population served2012
TITUSVILLE SOUTH PLANT 1HW:2673613,043 population served2012
OKMULGEE WWTHW:3555413,022 population served2012
Alan Horton WWTFHW:2619813,000 population served2012
IRCUD_South Regional WWTFHW:2677413,000 population served2012
Ocean Pines WWTPHW:3069413,000 population served2012
Niskayuna T SD 6 STPHW:3373213,000 population served2012
MOSHANNON VALLEY STPHW:3662713,000 population served2012
Smithfield Sewer AuthorityHW:3706313,000 population served2012
KNOB CREEK STPHW:3741613,000 population served2012
Lynn s Bayou WWTPHW:3767013,000 population served2012
Southwest WWTP DaytonHW:3801413,000 population served2012
Martinez II WWTPHW:3807113,000 population served2012
COOS BAY STP NO 1HW:3606312,999 population served2012
OXFORD AREA STPHW:3623212,965 population served2012
BRATTLEBORO STPHW:3823112,962 population served2012
HAILEY WOODSIDE S_T FACILITYHW:2745812,960 population served2012
CONNELLSVILLE STPHW:3669912,952 population served2012
LINCOLNTON WWTPHW:3429412,940 population served2012
Somerset Water Pollution ControlHW:3071212,902 population served2012
MCKINLEYVILLE WWTFHW:2579212,900 population served2012
Mauriceville MUDHW:3811112,900 population served2012
FOLEY WWTPHW:2502812,880 population served2012
Laredo North WWTPHW:3764112,877 population served2012
Corning C WWTPHW:3401312,870 population served2012
PENN TWP YORK STPHW:3656412,866 population served2012
Poughkeepsie T Tri Munical WWTPHW:3359412,859 population served2012
HARTFORD WWTPHW:3924412,857 population served2012
Dartmouth Dept of Public WorksHW:3071612,848 population served2012
LAUREL POTW NUMBER 2HW:3152112,829 population served2012
STOUGHTON STPHW:3946412,817 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.