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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
CEDAR BLUFF WWTPHW:250002,370 population served2012
CHARLESTON POTWHW:314202,370 population served2012
WYNNEWOOD WWTHW:358052,370 population served2012
THREE CREEKS STPHW:384462,366 population served2012
STRAWBERRY PT SOUTH WWTPHW:290672,365 population served2012
CRAIGSVILLE WWTPHW:389572,364 population served2012
TRYON WWTPHW:343502,363 population served2012
OSSEO WWTPHW:393742,361 population served2012
LOVELL LAGOONHW:396572,360 population served2012
Lima V WWTPHW:339832,359 population served2012
FOLKSTON WPCPHW:272022,358 population served2012
IDA GROVE WWTPHW:287562,357 population served2012
TOHATCHI CHUSKAHW:334492,356 population served2012
GLENCOE LAGOONHW:250342,354 population served2012
FULTON TWP WWSLHW:308632,353 population served2012
CRESCENT CITY STPHW:268642,350 population served2012
DALLAS WEST WPCPHW:271802,350 population served2012
Rosethorn WWTPHW:303592,350 population served2012
Montgomery V Sewers and WWTPHW:336182,350 population served2012
Watkins Glen V STPHW:340072,349 population served2012
CAMDEN COUNTY WWTPHW:341672,349 population served2012
Huntsville WWTPHW:255932,346 population served2012
Honeoye Falls V WWTPHW:339872,345 population served2012
NEW HANOVER TWP STPHW:362332,343 population served2012
MORENCI SEWAGE SYSTEMHW:311022,342 population served2012
WARRENS WWTPHW:395922,342 population served2012
HOMER STPHW:310602,341 population served2012
SYKESVILLE BORO STPHW:369362,341 population served2012
Comfort WWTPHW:380882,340 population served2012
DEXTER STPHW:309772,338 population served2012
Boonville V STPHW:338632,338 population served2012
JONESVILLE STPHW:311252,337 population served2012
Lamar WWTPHW:256462,336 population served2012
NEW LISBON STPHW:393552,335 population served2012
Lyons SD 2 WWTPHW:396132,335 population served2012
HICKMAN EASTHW:299812,334 population served2012
Bayfield Town ofHW:264562,333 population served2012
SummersetHW:372802,330 population served2012
CASSELTON LAGOONHW:344542,329 population served2012
EUPORA POTWHW:314702,328 population served2012
Bayard Regional WWFHW:334082,328 population served2012
Gravette WWTPHW:254882,325 population served2012
GORDON WWTPHW:328262,325 population served2012
BUTLER TWP MUN AUTH STPHW:370262,325 population served2012
Brewster WWTP and Sewer SystemHW:350022,324 population served2012
CLINTON STPHW:391582,322 population served2012
PLATTSBURG WWTPHW:321392,319 population served2012
STOCKTON WWTPHW:321872,319 population served2012
COLQUITT WPCPHW:270562,318 population served2012
West Fork WWTPHW:257552,317 population served2012
CATLIN STPHW:275832,317 population served2012
SESSER STPHW:279042,317 population served2012
VERNONIA STPHW:361982,317 population served2012
Dermott WWTPHW:255802,316 population served2012
Oxford Township Warren Co Pequest MUA CS_STP_SepticsHW:333872,316 population served2012
SNOW HILL WWTPHW:342482,316 population served2012
ENTERPRISEHW:381552,316 population served2012
LIMON WWTPHW:263562,315 population served2012
LYONS WWTPHW:264072,310 population served2012
Camden V WWTPHW:338642,310 population served2012
NEW OXFORD STPHW:365372,310 population served2012
MANCHESTER STPHW:387722,310 population served2012
ARDMORE WWTPHW:249822,308 population served2012
MARYSVILLE STPHW:365542,306 population served2012
GENOA CITY WWTPHW:392312,304 population served2012
LOGAN TWP STPHW:366222,303 population served2012
MULLENS WWTPHW:390482,303 population served2012
Camden WWTP and Sewer SystemHW:350182,302 population served2012
DOUSMAN WWTPHW:391902,302 population served2012
Oakmont WWTPHW:258102,300 population served2012
Meeker SDHW:265162,300 population served2012
Palmer Lake SDHW:265322,300 population served2012
WRIGHTSVILLE WPCPHW:273182,300 population served2012
CARRIER MILLS STPHW:279182,300 population served2012
LEONARDTOWN STPHW:306172,300 population served2012
RAYMOND POTW EASTHW:315892,300 population served2012
LAME DEER WWTF LAGOONHW:325322,300 population served2012
COLSTRIP WWTPHW:325942,300 population served2012
Kill Devil Hills WWTP LLCHW:342052,300 population served2012
MID MON VALLEY STPHW:367352,300 population served2012
JONESVILLE TRMT PLANTHW:371002,300 population served2008
ST MATTHEWS SOUTH PLANTHW:371262,300 population served2008
BELLS LAGOONHW:373222,300 population served2012
LORETTO STPHW:374382,300 population served2012
Onion Creek WRPHW:377472,300 population served2012
Newton WWTPHW:379742,300 population served2012
NELSON COUNTY REGIONAL STPHW:385112,300 population served2012
Templeton Dept of Public WorksHW:308032,298 population served2012
KALONA WWTPHW:287692,293 population served2012
CONWAY BORO STPHW:368022,290 population served2012
Mabton POTWHW:386042,290 population served2012
Lavaca WWTPHW:257372,289 population served2012
Harrisburg WWTPHW:255892,288 population served2012
WRAY WWTPHW:262702,287 population served2012
Cardington WWTP and Sewer SystemHW:349122,287 population served2012
UNION POTWHW:316352,286 population served2012
WRIGHTSTOWN STPHW:395282,286 population served2012
BURLINGTON WWTPHW:295762,285 population served2012
HUBBARD STPHW:360432,285 population served2012
ALBION WWTPHW:283292,284 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.