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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
DELTA TWP WWTPHW:3082437,744 population served2012
Moorpark WWTFHW:2596037,576 population served2012
WINTER HAVEN STP 3HW:2685737,500 population served2012
St Cloud Southside 2 WWTPHW:2696037,500 population served2012
WAILUKU KAHULUI WWTFHW:2735637,492 population served2012
Webster T WWTP and OnsitesHW:3398937,476 population served2012
MT PLEASANT WWTPHW:3101237,464 population served2012
Port St Lucie Glades WWTFHW:2698337,406 population served2012
CERES WWTPHW:2604637,338 population served2012
FISHERS WWTPHW:2798337,328 population served2012
WALWORTH COUNTY MSD STPHW:3918437,307 population served2012
PUYALLUP STPHW:3864337,240 population served2012
LAREDO SOUTHSIDE STPHW:3764037,160 population served2012
Delaware WWTP and Sewer SystemHW:3507237,066 population served2012
Leominster Dept of Public WorksHW:3075037,000 population served2012
Mt Pleasant_Center Street PlantHW:3725037,000 population served2008
JCUA WEST JACKSON COUNTY WWTPHW:3167436,987 population served2012
ADDISON WWTP NORTHHW:2760936,942 population served2012
E NORR PLYM WHIT STPHW:3626336,916 population served2012
BELOIT WWTPHW:3910336,913 population served2012
South County Regional WWTPHW:2669936,900 population served2012
WAIANAE WWTPHW:2735136,884 population served2012
CITY OF SULFUR SOUTH REGIONAL STPHW:3019836,720 population served2012
COOKEVILLE STPHW:3735336,647 population served2012
FAIRMONT WWTPHW:3890436,533 population served2012
Onondaga CoMeadowbrookLimestonSTPHW:3393736,469 population served2012
SNYDERVILLE WRD EAST CANYONHW:3817736,466 population served2012
Haverstraw Joint Regional STPHW:3364436,411 population served2012
ENFIELD WWTFHW:2654936,400 population served2012
Orange Co SD 1HW:3362336,387 population served2012
INLAND BAYS WTFHW:2662436,375 population served2012
DELAND REGIONAL WWTPHW:2689236,371 population served2012
Paducah McCracken Co JSA PaducahHW:2991136,348 population served2012
MIDDLE RIVER STPHW:3845336,328 population served2012
HOBBS STPHW:3341736,325 population served2012
NEW IBERIA STPHW:3017536,123 population served2012
WALLED LAKE WWTPHW:3096936,118 population served2012
JEFFERSONVILLE STPHW:2811736,066 population served2012
WEST LAFAYETTE WWTPHW:2808836,063 population served2012
HILO WWTFHW:2733936,000 population served2012
ST CHAS MISS RIVER STPHW:3173835,952 population served2012
AMBASSADOR CAFFERY STPHW:3015635,883 population served2012
LYNNWOOD TREATMENT SYSTEMHW:3860235,860 population served2012
PEKIN STP 1HW:2777335,857 population served2012
RWRA OWENSBORO WEST WWTPHW:2984035,788 population served2012
Bayou Marcus WRFHW:2668935,750 population served2012
Westfield Dept of Public WorksHW:3070135,728 population served2012
Marion WWTP and Sewer SystemHW:3525835,660 population served2012
PEPPERS FERRY STPHW:3851535,627 population served2012
BANGOR POLL ABATE FACHW:3039235,610 population served2012
SOUTH DAVIS SD SOUTHHW:3816235,594 population served2012
CLARKSBURG WWTPHW:3886235,549 population served2012
Orange Beach WWTPHW:2525335,500 population served2012
Manatee County North Regional WWTPHW:2700035,500 population served2012
Northgate WWTPHW:3800835,500 population served2012
REDONDO STPHW:3859635,420 population served2012
Onondaga Co Wetzel Road WWTPHW:3393535,340 population served2012
La Porte Main Plant WWTPHW:3801035,333 population served2012
Poughkeepsie C WWTPHW:3359335,321 population served2012
Meridian MDHW:2648235,225 population served2012
Huff Creek WWTPHW:3723835,125 population served2008
COLUMBIA WWTPHW:3735235,122 population served2012
Brighton City ofHW:2652835,100 population served2012
ROCK CREEK WWTPHW:3171535,094 population served2012
Laguna CSD WWTFHW:2591335,000 population served2012
SOUTH BERMUDA PLANTHW:2695635,000 population served2012
ATHENS MIDDLE OCONEE WPCPHW:2709835,000 population served2012
CARPENTERSVILLE WWTPHW:2775135,000 population served2012
SOUTHSIDE STP 2HW:3789335,000 population served2012
LAHAINA WWRFHW:2735734,998 population served2012
NORTH SIDE WWTPHW:3429134,916 population served2012
BOZEMAN WWTPHW:3251134,900 population served2012
BARTLESVILLE WWTHW:3566334,748 population served2012
NEW KENSINGTON STPHW:3671134,742 population served2012
MANITOWOC WWTPHW:3930834,724 population served2012
PLANT CITY STPHW:2669834,721 population served2012
Flagg Creek Wtr Reclamation DistricHW:2778334,692 population served2012
OKC CHISHOLM CREEK WWTHW:3566034,670 population served2012
CEDAR CITYHW:3813334,660 population served2012
Salatrillo WWTPHW:3806934,658 population served2012
COLLINSVILLE STPHW:2764734,578 population served2012
COMMERCE TWP WWTPHW:3118734,555 population served2012
GULF SHORES WWTPHW:2503834,500 population served2012
North Ridgeville French Creek WWTPHW:3511434,499 population served2012
POST FALLS AREA STPHW:2739334,400 population served2012
SOUTH KINGSTOWN REG STPHW:3706434,378 population served2012
WASHINGTON E WASH STPHW:3670634,338 population served2012
CEDAR FALLS WWTPHW:2855334,298 population served2012
Jamestown C WWTPHW:3407234,279 population served2012
Grant Street STPHW:2673134,230 population served2012
Hot Springs Regional WWTPHW:2566534,218 population served2012
Clinton POTW SOUTHSIDEHW:3142634,211 population served2012
LEWISTON S_T PLANTHW:2736434,068 population served2012
Herkimer Co WWTPHW:3383233,904 population served2012
EPHRATA BORO STPHW:3637233,863 population served2012
EAST CHICAGO STPHW:2802333,842 population served2012
Ocean Township Monmouth SA CS_Septics_STPHW:3332033,795 population served2012
CATAWBA RIVERMORGANTON WWTPHW:3415833,791 population served2012
ROCKY HILL WPCFHW:2656233,770 population served2012
RIB MOUNTAIN MSD STPHW:3959033,687 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.