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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
MONTICELLO WWTPHW:267783,500 population served2012
RINCON WPCPHW:272793,500 population served2012
WINNEBAGO STPHW:276813,500 population served2012
CARLYLE STP and COLLECTION SYSTEMHW:279313,500 population served2012
Pigeon Township RSDHW:283673,500 population served2012
CARENCRO SEW OXY PONDHW:301173,500 population served2012
Meadow View WWTPHW:305513,500 population served2012
Talbot County Region II WWTPHW:306243,500 population served2012
HIGGINSVILLE S LAGOONHW:321813,500 population served2012
WOLF POINT WWTPHW:325743,500 population served2012
Mayville V NChautauqua LSD WWTPHW:340733,500 population served2012
LOUISBURG WWTPHW:342313,500 population served2012
Granville WWTP and Sewer SystemHW:351503,500 population served2012
Richland Co Eastview WWTPHW:353773,500 population served2012
HARTSHORNE WWTHW:355743,500 population served2012
TOBYHANNA TWP BLAKESLEE STPHW:364523,500 population served2012
ECWandSA_BROOKS AVENUE PLANTHW:372263,500 population served2008
OLNEY STPHW:378623,500 population served2012
SALTVILLE STPHW:383253,500 population served2012
DUNDEE STPHW:309813,499 population served2012
BLOOMER STPHW:391123,499 population served2012
BALDWIN CITY WWTPHW:294743,497 population served2012
NEWTOWN WPCFHW:265783,496 population served2012
AVA WWTPHW:322023,493 population served2012
ROYSTON WPCPHW:270853,490 population served2012
GLASGOW WWTFHW:324833,490 population served2012
ETOWAH STPHW:373793,490 population served2012
MT VERNON WWTPHW:298703,488 population served2012
SMITHFIELD TWP MONROE STPHW:364493,488 population served2012
Lee Dept of Public WorksHW:307643,483 population served2012
CHECOTAH PWA WWTHW:358933,481 population served2012
SHELBURNE FD2 WPCFHW:382763,481 population served2012
Haskell WWTPHW:377133,478 population served2012
OROFINO S_T PLANTHW:274153,476 population served2012
Long Beach WWTPHW:387203,475 population served2012
WEST PARLIER WWTFHW:260383,474 population served2012
KINGWOOD WWTPHW:389713,470 population served2012
WHEATLAND WWTFHW:261443,469 population served2012
ELIZABETH BORO STPHW:367613,466 population served2012
THERMOPOLIS LAGOONHW:396953,463 population served2012
DEER LODGE WWTPHW:325673,461 population served2012
GALENA STPHW:279123,460 population served2012
Cuba V WWTPHW:340543,459 population served2012
BRUNSWICK WWTPHW:305893,457 population served2012
Town of Whitmire_Ducan Creek PlantHW:371303,457 population served2008
DUNSMUIR WWTFHW:260843,456 population served2012
ATOKA WWTHW:357163,452 population served2012
HAYWARD WWTPHW:392473,451 population served2012
Springtown WWTPHW:378663,450 population served2012
Wills Point WWTPHW:379443,450 population served2012
Eagle Lake WWTPHW:380773,450 population served2012
RAEFORD WWTPHW:342703,449 population served2012
RALPHO TWP STPHW:366783,447 population served2012
GODDARD WWTPHW:292493,446 population served2012
FORTVILLE WWTPHW:279873,444 population served2012
COLUMBUS WWTPHW:295593,444 population served2012
Hamburg Twp WWTPHW:309333,444 population served2012
AUBURN WWTPHW:326563,443 population served2012
Johnstown WWTP and Sewer SystemHW:351893,440 population served2012
DELTAHW:381263,436 population served2012
Pleasant Valley RSD WWTP and SewersHW:347633,432 population served2012
WELLSVILLEHW:381243,432 population served2012
MID CENTRE COUNTY STPHW:366923,429 population served2012
Kachina Village WWTFHW:252883,425 population served2012
GOLDENDALE POTWHW:385793,425 population served2012
COLUMBIA FALLS WWTPHW:324853,423 population served2012
PCSD1 Weeks Hollow WWTFHW:323483,421 population served2012
PORTLAND WWTPHW:311133,420 population served2012
EPHRAIM STPHW:391513,417 population served2012
KENAI STPHW:252623,414 population served2012
LADYSMITH WWTPHW:392863,414 population served2012
GEORGETOWN STPHW:278753,412 population served2012
WHITESTOWN WWTPHW:279753,410 population served2012
MADILL PWA WWTHW:359023,410 population served2012
FORTSON CREEK WPCPHW:271943,405 population served2012
Hoosick Falls V STPHW:337433,401 population served2012
INDIAN HEAD WWTPHW:305803,400 population served2012
SHELBY WWTPHW:325793,400 population served2012
GREAT FALLS WWTPHW:371363,400 population served2008
North WWTP LulingHW:380623,400 population served2012
North Brookfield WWTPHW:307653,396 population served2012
MSD Indian Creek Drainage BasinHW:350523,393 population served2012
MAYSVILLE STPHW:300123,392 population served2012
BELLE VERNON BORO STPHW:367293,391 population served2012
CUSTER WWTPHW:372893,391 population served2012
BOSCOBEL STPHW:391203,391 population served2012
Palmyra V STPHW:340223,390 population served2012
FAIRHAVEN WTHW:382413,390 population served2012
BIGLERVILLE BORO AUTH STPHW:365443,389 population served2012
JEWETT CITY WPCFHW:265553,388 population served2012
WELLSBURG WWTPHW:388173,386 population served2012
NYSDOC Bedford Hills CFHW:336883,383 population served2012
WELSH STPHW:302703,380 population served2012
Dilley WWTPHW:376433,380 population served2012
BICKNELL WWTPHW:282913,378 population served2012
Corning WWTPHW:255073,377 population served2012
EDDYVILLE STPHW:299583,377 population served2012
SCOTLAND NECK WWTPHW:342563,377 population served2012
LUMBERTON POTWHW:315313,376 population served2012
BLANDINGHW:381413,375 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.