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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
Corydon 2 SatelliteHW:284442,715 population served2012
MONDOVI WWTPHW:393362,714 population served2012
KINGMAN WWTPHW:292842,710 population served2012
HOLDEN WWTPHW:317792,710 population served2012
REYNOLDSVILLE STPHW:369202,710 population served2012
THOMPSON WPCFHW:266092,708 population served2012
PADEN CITY WWTPHW:390332,708 population served2012
GRUNDY CENTER WWTPHW:287242,706 population served2012
BLOOMFIELD TWP STPHW:369532,705 population served2012
YORK LAGOONHW:252292,702 population served2012
CONRAD WWTPHW:324842,700 population served2012
Sodus Point V WWTPHW:340252,700 population served2012
Cridersville WWTP and Sewer SystemHW:350662,700 population served2012
Erie Co Mittiwanga Ruggles Beach WWTPHW:350972,700 population served2012
Merkel WWTPHW:377052,700 population served2012
Farmersville 2HW:378232,700 population served2012
South WWTP LulingHW:380612,700 population served2012
CENTRAL GARAGE STPHW:385232,700 population served2012
HILLSVILLE REGIONAL WWTPHW:385332,700 population served2012
PETERSBURG WWTPHW:388432,700 population served2012
LEDBETTER STP and CSHW:298992,699 population served2012
IUKA POTWHW:315132,699 population served2012
TAMA WWTPHW:290752,697 population served2012
HAHIRA WTFHW:272182,696 population served2012
New London WWTP and Sewer SystemHW:349372,696 population served2012
Atkins North WWTPHW:257092,694 population served2012
Middlefield WWTP and Sewer SystemHW:352732,694 population served2012
FOLEY LAGOONHW:312762,693 population served2012
SHERIDAN WWTPHW:279852,691 population served2012
WARDEN DOMESTIC STPHW:387562,690 population served2012
PARSONS WWTPHW:390162,689 population served2012
ABBEVILLE SOUTH WWTPHW:252312,688 population served2012
WHITE SULPHUR SPRINGS WWTPHW:388492,688 population served2012
COMMERCE WWTHW:359392,687 population served2012
TRENTON STPHW:279292,685 population served2012
NORTH CODORUS TOWNSHIP SAHW:370412,683 population served2012
Bartlett WWTPHW:377292,680 population served2012
FRIDAY HARBOR STPHW:385782,680 population served2012
RED SULPHUR PSD WWTPHW:389472,680 population served2012
ST IGNACE STPHW:311512,678 population served2012
NORTH HOUGHTON CO WandSA CSOHW:311402,677 population served2012
VERGENNES WWTFHW:382832,676 population served2012
PELL LAKE SD 1 STPHW:392892,675 population served2012
Rouses Point V STPHW:337882,673 population served2012
GREATER BADIN WWTPHW:343912,672 population served2012
SALUDA TREATMENT PLANTHW:371272,672 population served2008
ADAMS WWTPHW:390592,672 population served2012
CAROLINA SHORES WWTPHW:341482,671 population served2012
Warren Township Stage I II STPHW:332942,669 population served2012
PHILLIPSBURG WWTPHW:296912,668 population served2012
Whitehall V STPHW:338212,667 population served2012
LOWELL WWTPHW:342402,667 population served2012
NEODESHA WWTPHW:297822,664 population served2012
OCEA Ash Avenue WWTPHW:300662,664 population served2012
BELZONI POTWHW:313932,663 population served2012
Clear Creek CDHW:284182,660 population served2012
MARIETTA WWTHW:355732,660 population served2012
WALTERS WWTHW:355652,657 population served2012
ORD WWTPHW:329712,656 population served2012
Eunice City ofHW:334412,655 population served2012
HOLLIS PWA WWTHW:358232,655 population served2012
BILLINGS TWP SEW SYSHW:312062,653 population served2012
Clermont Co Miami Trails WWTPHW:350472,653 population served2012
Riverton Borough CS_STPHW:333792,652 population served2012
JUNEAU WWTPHW:392742,652 population served2012
NEILLSVILLE STPHW:393482,652 population served2012
Strasburg WWTP and Sewer SystemHW:354282,650 population served2012
WEATHERLY MUN AUTHHW:363182,650 population served2012
Bloomington WWTPHW:376872,650 population served2012
BARTON WPC FHW:382242,650 population served2012
LAVONIA WPCPHW:270712,648 population served2012
PAWNEE STPHW:276902,647 population served2012
HUGHESVILLE WOLF TWP STPHW:366902,647 population served2012
LYONS WPCP 2 NORTHHW:272452,646 population served2012
LOWER MORELAND _ CHAPEL HILL STPHW:362182,646 population served2012
MAGNOLIA POTW NORTHHW:315382,645 population served2012
Hancock Co Util Auth NORTH POTWHW:316472,645 population served2012
CASS CITY STPHW:309382,643 population served2012
CLAYWOOD PARK PSD WWTPHW:390382,641 population served2012
BLOOMFIELD WWTPHW:285222,640 population served2012
OCEA Orchard Grass WWTPHW:300642,640 population served2012
MARTINSBURG BORO STPHW:366242,640 population served2012
EUFAULA PWA WWTHW:358942,639 population served2012
LAKE LURE WWTPHW:343792,637 population served2012
MINERAL POINT STPHW:393342,636 population served2012
Franklinville V WWTPHW:340592,635 population served2012
HOMEDALE STPHW:273882,633 population served2012
Grand Saline WWTPHW:379072,631 population served2012
HERTFORD WWTPHW:343452,630 population served2012
CUMBERLAND TWP NORTH STPHW:364822,630 population served2012
LOCKPORT STPHW:302732,629 population served2012
COLLINS POTWHW:314302,629 population served2012
CONEWAGO TWP STPHW:365852,629 population served2012
SEWARD ST CLAIR STP SUGAR RUNHW:367902,628 population served2012
LOMIRA WWTPHW:393002,627 population served2012
FEDERALSBURG WWTFHW:305702,626 population served2012
LIBBY WWTPHW:325602,626 population served2012
WHITE OAK PSD WWTPHW:388362,626 population served2012
PRINCES LAKE WWTPHW:280032,625 population served2012
Winchedon Dept of Public WorksHW:307552,625 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.