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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
BOONEVILLE POTWHW:314048,625 population served2012
Ciales WWTPHW:397548,613 population served2012
WARRENTON WWTPHW:321508,612 population served2012
RIPON WWTPHW:394258,612 population served2012
CORTEZ SOUTHWEST WWTPHW:263628,600 population served2012
ENTERPRISE WWTP2COLLEGEHW:250208,598 population served2012
LAKEPORT SOUTH WWTFHW:260638,590 population served2012
THREE RIVERS WWTPHW:311248,567 population served2012
Livingston Co Conesus Lake CoSDHW:339828,561 population served2012
Port Jervis C STP owner NYCDEPHW:336258,560 population served2012
RAYNE STPHW:302138,552 population served2012
Orrville WWTP and Sewer SystemHW:348298,551 population served2012
FLUSHING WWTFHW:309128,542 population served2012
WALLACE WWTPHW:342208,538 population served2012
REEDSBURG STPHW:394148,529 population served2012
SYLACAUGA J EARL HAM WWTPHW:252458,525 population served2012
RODEO WWTFHW:258678,515 population served2012
MALDEN PSD WWTPHW:388888,515 population served2012
BELLE CHASSE HWY 23 WWTPHW:302898,512 population served2012
LaFollette STPHW:374288,510 population served2012
BARTLETT BAY STPHW:382788,510 population served2012
Stonegate Village MDHW:265228,500 population served2012
AVON PARK WPC PLANTHW:267718,500 population served2012
Lake Charles Plant DHW:301618,500 population served2012
TRENTON MAIN WWTPHW:323078,500 population served2012
FALLON WWTFHW:331248,500 population served2012
Pecan Branch WWTPHW:377778,500 population served2012
WALKER STPHW:302028,485 population served2012
PAW PAW LAKE WWTPHW:310378,474 population served2012
Raymondville WWTPHW:376528,466 population served2012
Warsaw WWTP2HW:283028,462 population served2012
RATON STPHW:334108,460 population served2012
Jackson WWTP and Sewer SystemHW:351818,452 population served2012
RIDGWAY BORO STPHW:368938,452 population served2012
LINDSAY WWTFHW:259988,450 population served2012
SOUTH BOSTON S T PHW:384498,439 population served2012
TUSCUMBIA WWTPHW:251108,435 population served2012
Yadkin Valley Sewer Authority WWTPHW:343998,430 population served2012
New Boston WWTPHW:378908,430 population served2012
ST LOUIS WWTPHW:311148,411 population served2012
Soccorro City ofHW:334098,407 population served2012
NORTHAMPTON BORO STPHW:363228,405 population served2012
Ash Street STPHW:269058,400 population served2012
MANTENO VILLAGE OFHW:279568,400 population served2012
ST JOHNSBURY STPHW:382728,400 population served2012
NORTHEAST BRUNSWICK WWTPHW:341518,389 population served2012
WORLAND LAGOONHW:397218,387 population served2012
GRIMES WWTPHW:287218,378 population served2012
Hooksett WWTFHW:331978,378 population served2012
CUSHING WWTHW:359468,371 population served2012
Carl Junction WWTPHW:320168,369 population served2012
Wynne WWTPHW:255728,367 population served2012
MT HOLLY WWTPHW:342388,346 population served2012
Kenton WWTP and Sewer SystemHW:351938,336 population served2012
SOLVANG WWTFHW:259088,334 population served2012
HARBOR SPRINGS CITY STPHW:311748,331 population served2012
PORT WENTWORTH WPCPHW:270398,326 population served2012
MILAN STPHW:374558,311 population served2012
WOODLAND PARK NORTH WWTPHW:263418,300 population served2012
LAUGHLIN Lift StationHW:331138,300 population served2012
Laughlin WRFHW:331548,300 population served2012
Lick Creek WWTPHW:377568,300 population served2012
Dove Springs WWTPHW:377768,300 population served2012
WYTHEVILLE REGIONAL STP and COLL SYSHW:383728,300 population served2012
MEBANE WWTPHW:341238,296 population served2012
CONOVER NORTHEAST WWTPHW:341798,286 population served2012
HOLLY SPRINGS POTW NUMBER 1HW:315068,283 population served2012
Scituate Dept of Public WorksHW:307078,273 population served2012
DECORAH WWTPHW:291738,263 population served2012
Buckeye Sundance WRFHW:253098,258 population served2012
GOLDEN GATE FGUAHW:267618,250 population served2012
Live Oak WWTPHW:259878,247 population served2012
SPRING LAKE WWTPHW:342048,238 population served2012
JENA SEWERAGE SYSTEMHW:301498,237 population served2012
ANTIGO WWTPHW:390758,234 population served2012
HILLSDALE SEWAGE PLANTHW:311188,233 population served2012
HOLLY STPHW:309628,225 population served2012
Scioto Co Wheelersburg Sewer District No 2 WWTP and SewersHW:354008,225 population served2012
Newnan WAHOO CREEK WPCPHW:271148,218 population served2012
Auburndale Allred WWTPHW:268448,200 population served2012
WAIMANALO WWTFHW:273508,200 population served2012
VILLE PLATTE STPHW:302518,200 population served2012
Liberty WWTPHW:380158,200 population served2012
Oberlin WWTP and Sewer SystemHW:353258,195 population served2012
Bellevue WWTP and Sewer SystemHW:349868,193 population served2012
GEORGETOWN STPHW:266288,192 population served2012
GONZALES WWTFHW:259248,187 population served2012
WEST JEFFERSON METRO DISTHW:263578,186 population served2012
NEVADA WWTPHW:317588,186 population served2012
ANSON COUNTY REG WWTPHW:341278,184 population served2012
BUENA VISTA STPHW:384698,179 population served2012
WEBSTER CITY WWTPHW:291198,176 population served2012
PRINCETON WWTPHW:281008,175 population served2012
KEYSER WWTPHW:389348,168 population served2012
CORPENING CK MARION WWTPHW:342978,165 population served2012
JONESBOROUGH STPHW:374188,165 population served2012
VANPORT TWP STPHW:367548,151 population served2012
OAKDALE WWT FACILITYHW:302168,137 population served2012
RICHLAND CENTER WWTPHW:394218,136 population served2012
CRESTON WWTPHW:285998,134 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.