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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
FREDERICKTOWN WWTPHW:323694,888 population served2012
BERNE WWTPHW:280354,884 population served2012
ARCADIA WWTPHW:390774,883 population served2012
DUPO SEWAGE WORKSHW:276444,879 population served2012
LEACOCK TOWNSHIP SAHW:365904,878 population served2012
CHEBOYGAN WWTPHW:311164,876 population served2012
SPINDALE WWTPHW:343764,876 population served2012
Marsh Landing WWTPHW:268744,875 population served2012
CHURCH POINT STPHW:302094,875 population served2012
HARRAH WWTHW:356514,870 population served2012
JUNCTION CITY STPHW:360564,870 population served2012
Thatcher WWTFHW:252954,865 population served2012
GHCPSD WEST MILFORD WWTPHW:388634,862 population served2012
Marana WWTFHW:253574,860 population served2012
Tisbury Dept of Public WorksHW:308074,860 population served2012
Archbold WWTP and Sewer SystemHW:348854,860 population served2012
VANDALIA WWTPHW:323754,859 population served2012
PRINCETON STPHW:313424,851 population served2012
GOODLAND WWTPHW:297464,848 population served2012
BLACKSTONE TREATMENT WORKHW:383824,844 population served2012
Eldorado WTFHW:276154,838 population served2012
KENNEBUNKPORT WWTFHW:304294,834 population served2012
PORTAGE AREA STPHW:366464,824 population served2012
PAROWANHW:381454,823 population served2012
GREENCASTLE FRANKLIN STPHW:365774,821 population served2012
LAFAYETTE STPHW:374274,820 population served2012
Burnet WWTPHW:377634,819 population served2012
Treasure Island WWTFHW:258444,818 population served2012
Walnut Ridge WWTPHW:255764,815 population served2012
CUBA WWTPHW:324744,810 population served2012
LaSalle East Side WWTP New PlantHW:277994,800 population served2012
Roxana Village ofHW:278474,800 population served2012
MITCHELL WWTPHW:283134,800 population served2012
Florence RSDHW:284034,800 population served2012
Manchester WWTP and Coll SysHW:305354,800 population served2012
HOUSTON POTWHW:315084,800 population served2012
GREGG TWP ALLENWOOD STPHW:366674,800 population served2012
BLACKVILLE TOWN OFHW:371204,800 population served2008
DUNLAP STPHW:373694,800 population served2012
TRENTON WWTPHW:375264,800 population served2012
Winnie Stowell WWTPHW:380314,800 population served2012
CANTON WPCPHW:271574,797 population served2012
JACKSON WWTFHW:260424,796 population served2012
Pea Ridge WWTPHW:255914,794 population served2012
SULPHUR WWTHW:355614,794 population served2012
PINE CREEK MA STPHW:366864,791 population served2012
YORKTOWN WWTPHW:280844,785 population served2012
OSKALOOSA SW STPHW:289444,784 population served2012
MAUSTON STPHW:393194,783 population served2012
MILAN WWTPHW:309724,775 population served2012
WINTERSET WWTPHW:291454,768 population served2012
HORSHAM TWP PARK CREEK STPHW:362594,768 population served2012
ST JAMES WWTPHW:323474,767 population served2012
HAMBURG BORO STPHW:362954,764 population served2012
Chittenango V STPHW:339274,755 population served2012
PORT DEPOSIT WWTPHW:306624,752 population served2012
MOJAVE WWTFHW:261834,751 population served2012
COAL CITY STPHW:278704,751 population served2012
EVANSDALE WWTPHW:286704,751 population served2012
MORGANTOWN CHEAT LAKE WWTPHW:389454,747 population served2012
Dardanelle WWTPHW:257694,745 population served2012
MACY OMAHA TRIBE WWTPHW:331034,741 population served2012
RAVENSWOOD WWTPHW:388704,741 population served2012
Tuscarawas Co Wilkshire Hills WWTPHW:347764,740 population served2012
BELFAST S T PHW:304074,739 population served2012
AUSTIN WWTPHW:281734,734 population served2012
HOLDENVILLE PWA WWTHW:358334,732 population served2012
LUTCHER SEW SYSHW:301654,730 population served2012
18 MI CR WWTPMID REGHW:371754,730 population served2008
GLENDIVE WWT FACILITYHW:324804,729 population served2012
MT PLEASANT BORO STPHW:368294,728 population served2012
OMAK STPHW:386264,728 population served2012
BREMEN WWTPHW:280754,725 population served2012
EUDORA WWTPHW:293604,724 population served2012
Mendham Borough CS_Septics_STPHW:332984,724 population served2012
Ashdown WWTPHW:255824,723 population served2012
Paducah McCracken Co JSA WoodlawnHW:300604,718 population served2012
DODGEVILLE STPHW:391884,716 population served2012
NEHALEM BAY STPHW:361594,711 population served2012
SAVANNAH WWTPHW:319934,707 population served2012
ANNVILLE TWP STPHW:363084,707 population served2012
Dumas WWTPHW:255464,706 population served2012
Greenbrier WWTPHW:256024,706 population served2012
BLAINE STPHW:385414,705 population served2012
IVANHOE WWTFHW:260124,700 population served2012
Barefoot Bay WWTPHW:267404,700 population served2012
YORK W P ABATEMENT FACHW:304594,700 population served2012
LORIS WWTPHW:371144,700 population served2008
TRION WPCPHW:270924,698 population served2012
MAHANOY CITY STPHW:370154,697 population served2012
RUSSELL WWTPHW:296594,696 population served2012
Northern Moraine Utility Com WWTPHW:396444,694 population served2012
ROCKVILLE WWTPHW:283384,692 population served2012
FALLS CITY WWTPHW:328014,691 population served2012
HUMBOLDT WWTPHW:287534,690 population served2012
FLATWOODS CANOE RUN PSD WWTPHW:388104,690 population served2012
New Lexington WWTP and Sewer SystemHW:347784,689 population served2012
WAYNESBURG STPHW:368274,686 population served2012
MADAWASKA WWTFHW:304344,685 population served2012
RIPLEY POTWHW:315934,684 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.