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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
CLEAR LAKE SEWER DISTHW:2857510,666 population served2012
Gafner Water Reclamation PlantHW:2624310,654 population served2012
FALMOUTH WWTFHW:3048110,647 population served2012
West Milford Township High View CS_STPHW:3326010,628 population served2012
HCWandSWMA GULFPORT POTW NORTHHW:3149210,623 population served2012
BEAVER BROOK WPCFHW:2657010,621 population served2012
OCEAN SHORES STPHW:3873410,615 population served2012
BROADNECK WWTPHW:3052710,606 population served2012
Hidalgo WWTPHW:3762910,600 population served2012
SHENANDOAH SEWAGE TFHW:3628810,577 population served2012
MILLERSVILLE BORO STPHW:3637310,574 population served2012
NEWMAN WWTFHW:2607510,567 population served2012
ALLIANCE WWTPHW:3264110,566 population served2012
NEWPORT STPHW:3607910,560 population served2012
Malvern WWTPHW:2557410,559 population served2012
LAWRENCEBURG WWTPHW:2999610,550 population served2012
Somersworth WWTFHW:3321910,547 population served2012
NORTH BRANCH MUN WTPHW:3125310,545 population served2012
WINDSOR LOCKS WPCFHW:2661810,543 population served2012
WEST CHESTER _ TAYLOR RUN STPHW:3624210,539 population served2012
HARRISONVILLE WWTPHW:3191510,519 population served2012
Ruidoso WWTPHW:3350110,513 population served2012
WEST ALEXANDER STREET PLAHW:3724310,511 population served2008
CLINTON WWTPHW:3222010,508 population served2012
EUFAULA WWTPHW:2515910,500 population served2012
Safford WWTFHW:2529410,500 population served2012
Florence South WRFHW:2537210,500 population served2012
South Santa Rosa Utilities STPHW:2669110,500 population served2012
JESUP WPCFHW:2707010,500 population served2012
LEWISBURG STPHW:3743310,500 population served2012
ALPENA WWTSHW:3100410,490 population served2012
ASHLANDHW:2984310,484 population served2012
GUYMON UA NORTHEAST WWTHW:3599210,479 population served2012
Leicester Board of HealthHW:3078610,471 population served2012
ELLETTSVILLE WWTPHW:2817910,468 population served2012
ROCKDALE CO ALMAND BR WPCPHW:2717010,461 population served2012
Put in Bay WWTP and Sewer SystemHW:3537310,450 population served2012
Fredericksburg WWTPHW:3809110,450 population served2012
MONTVILLE WPCFHW:2657210,446 population served2012
DECATUR WWTPHW:2803610,440 population served2012
SCOTTSBORO GOOSEPOND WWTPHW:2521410,437 population served2012
KENNETT WWTPHW:3208610,432 population served2012
LEX ROCK REGIONAL WQCFHW:3846810,431 population served2012
LAWRENCEBURG WWTPHW:3743010,428 population served2012
CONSHOHOCKEN BORO AUTHHW:3623710,416 population served2012
ASTORIA STPHW:3606210,402 population served2012
MINOOKA STPHW:2759210,400 population served2012
Dona Ana Co South Central RegionalHW:3349010,400 population served2012
BJWSA_HardeevilleHW:3707910,380 population served2008
Wapakoneta WWTP and Sewer SystemHW:3547810,371 population served2012
PELLA WWTPHW:2896010,360 population served2012
Berlin WWTFHW:3316310,351 population served2012
ST ALBANS WPCFHW:3827110,347 population served2012
FARMVILLE WWTPHW:3848010,347 population served2012
BURLEY SEWAGE TREATMENT PLANTHW:2746210,345 population served2012
Grafton WWTP and Sewer SystemHW:3514810,343 population served2012
PORTAGE WWTPHW:3939510,337 population served2012
Hangtown Creek WWTPHW:2613810,335 population served2012
Bedminster Township CS_Septics_STPHW:3330910,317 population served2012
DAPHNE WATER RECLAMATION FACILITYHW:2501110,305 population served2012
GADSDEN EAST WWTPHW:2503210,300 population served2012
ZEPHYRHILLS WWTPHW:2684110,300 population served2012
Aibonito WWTPHW:3978410,291 population served2012
DUNBAR WWTPHW:3888310,272 population served2012
MORTON STP 2HW:2781410,269 population served2012
KUTZTOWN BORO STPHW:3638910,267 population served2012
Readington Lebanon SA STPHW:3330810,264 population served2012
GREENSBURG STPHW:2823410,260 population served2012
LOUDON STPHW:3743910,251 population served2012
CAMDEN HCR LAGOONHW:3733610,250 population served2012
Batesville WWTPHW:2563110,248 population served2012
MARYSVILLE STPHW:3092410,248 population served2012
PUNXSUTAWNEY BORO STPHW:3693310,243 population served2012
SHIPPENSBURG BORO STPHW:3651810,228 population served2012
Utuado WWTPHW:3975210,205 population served2012
Lawrence Co Union Rome SD WWTPHW:3546610,203 population served2012
SALEMHW:3813010,203 population served2012
LIHUE WWTFHW:2735210,200 population served2012
MANCHESTER WWTPHW:3744510,200 population served2012
NAZARETH BORO STPHW:3638210,172 population served2012
BARRINGTON STPHW:2758910,168 population served2012
PACIFIC WWTPHW:3187510,152 population served2012
ABERDEEN POTW EASTHW:3137810,147 population served2012
CUMBERLAND WWTPHW:2826210,145 population served2012
JEANNETTE CITY STPHW:3678910,129 population served2012
TUCKASEIGEE WandSA WWTP 1HW:3427910,118 population served2012
ROCHESTER AREA STPHW:3671010,106 population served2012
OZARK SOUTHSIDE WWTPHW:2508210,100 population served2012
WATERLOO CITY OFHW:2762010,100 population served2012
WICHITA WWT 4 FOUR MILE CREEKHW:2924610,100 population served2012
Claremont WWTFHW:3322110,100 population served2012
Great Neck V STPHW:3352610,100 population served2012
CARROLL WWTPHW:2855010,098 population served2012
ST JOHNS WWTPHW:3082010,089 population served2012
Bordentown SA Black s Creek WTPHW:3336810,084 population served2012
WINFIELD WWTPHW:2980810,083 population served2012
WOOD DALE STP NORTHHW:2771410,080 population served2012
CAIRO WPCPHW:2715510,053 population served2012
BRAZIL REGIONAL WWTPHW:2805810,045 population served2012
SOUTH LYON WWTPHW:3096510,036 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.