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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
PASO ROBLES WWTPHW:2589833,673 population served2012
Conway Tucker Creek WWTPHW:2543333,625 population served2012
Lake Elsinore Regional WWTPHW:2623333,500 population served2012
BCUD SOUTH CENTRAL REG STPHW:2673733,500 population served2012
Santa Isabel WWTPHW:3977133,493 population served2012
MOORE CO REGIONAL WWTP ADDORHW:3432233,406 population served2012
UPPER ALLEGHENY JSA STPHW:3671533,406 population served2012
FALLBROOK WWTF 1HW:2623933,373 population served2012
TERRACE AVE PLANTHW:3019533,225 population served2012
Auburn C WWTP and CollectionHW:3390933,174 population served2012
JO CO BL RIV MSD 1 WWTPHW:2942733,163 population served2012
SCHERERVILLE STPHW:2802733,152 population served2012
Northampton Dept of Public WorksHW:3073833,133 population served2012
CHERAW WWTPHW:3715033,000 population served2008
Northeast WWTP HoustonHW:3800433,000 population served2012
MICHIGAN CITY STPHW:2815332,900 population served2012
LAKE CO SE REG WWTFHW:2610832,868 population served2012
Lockport C WWTPHW:3409832,739 population served2012
GILLETTE WWTPHW:3965132,716 population served2012
LEESBURG SAN SEWER SYSTEMHW:3849632,712 population served2012
Burlingame WWTPHW:2583432,696 population served2012
Selma Kingsburg Fowler CSD WWTFHW:2602032,622 population served2012
Lake Bradford Road STPHW:2669532,500 population served2012
Cayey WWTPHW:3978132,421 population served2012
LOS BANOS WWTFHW:2598932,380 population served2012
Caldwell Borough CS_STPHW:3326332,215 population served2012
East Windsor Township CS_Septics_STPHW:3328532,214 population served2012
HUNTSVILLE ALDRIDGE CREEK WWTPHW:2504832,208 population served2012
LUFKIN WWTPHW:3796032,200 population served2012
WENATCHEE POTWHW:3867732,090 population served2012
Fairborn WWTP and Sewer SystemHW:3510132,052 population served2012
AUBURN H C MORGAN WWTPHW:2498632,028 population served2012
Columbia County Little River WPCPHW:2732832,000 population served2012
CHARLESTON WWTPHW:2756132,000 population served2012
Summit Co Upper Tuscarawas WWTP 36HW:3543932,000 population served2012
North Texas MWD Panther Creek WWTPHW:3787932,000 population served2012
SPRINGFIELD NW WWTPHW:3175431,980 population served2012
MOUNT VERNON TREATMENTHW:3861531,940 population served2012
Chautauqua Co SandCCLSD WWTPHW:3406831,843 population served2012
PORTAGE WWTPHW:2803331,814 population served2012
GROTON WPCFHW:2655731,776 population served2012
El Mirage WRFHW:2534031,767 population served2012
RWRA OWENSBORO EASTHW:2984131,744 population served2012
Middletown WPCFHW:2656931,700 population served2012
VALPARAISO STPHW:2803431,680 population served2012
WALLA WALLA STPHW:3867431,670 population served2012
TOOELEHW:3817531,605 population served2012
MARION WWTPHW:2815231,590 population served2012
Palm Bay Utilities WWTFHW:2673831,500 population served2012
WEST GOSHEN STPHW:3621731,450 population served2012
ST CHAS MO RIVER STPHW:3173731,408 population served2012
OSO CREEK WWRFHW:2626331,398 population served2012
KENNEBEC WWTPHW:3039931,386 population served2012
Burlington Township Centeral Ave STP_CS_SepticsHW:3337031,372 population served2012
Hamilton County WWTPHW:3739831,366 population served2012
PCRWRD Avra Valley WWTFHW:2535531,334 population served2012
Laramie WWTFHW:3964631,294 population served2012
FREMONT WWTPHW:3281131,249 population served2012
SANDY RUN CREEK WPCPHW:2712531,231 population served2012
LAKE CHARLES PLANT AHW:3015731,230 population served2012
Taunton Dept of Public WorksHW:3074631,106 population served2012
MILLER CREEK STPHW:3865631,104 population served2012
FALL CREEK PLANTHW:2831531,103 population served2012
WENTZVILLE WATER RECLAMATIONHW:3195931,095 population served2012
West Warwick WWTFHW:3706631,076 population served2012
BETHANY WARR ACRES WWTHW:3565731,010 population served2012
DAVIE SYSTEM IIHW:2664531,000 population served2012
TAYLORS PLANTHW:3723431,000 population served2008
MUNDELEIN STPHW:2772430,935 population served2012
ALABASTER WWTPHW:2497330,800 population served2012
Amherst Dept of Public WorksHW:3072430,783 population served2012
RUTLAND WPCFHW:3826930,743 population served2012
Benton WWTPHW:2543130,681 population served2012
WEST BEND WWTPHW:3950630,636 population served2012
HATFIELD TWP STPHW:3623030,605 population served2012
CARMEL WWTFHW:2589430,600 population served2012
GREATER HAZELTON STPHW:3642130,576 population served2012
Urbana and Champaign Southwest STPHW:2758730,559 population served2012
North Bergen MUA Woodcliff STPHW:3327630,529 population served2012
HENDERSON STP 1 NORTHHW:2985030,515 population served2012
Sewer Authority Mid Coastside WWTFHW:2586230,500 population served2012
LAS GALLINAS VALLEY WWTFHW:2587630,500 population served2012
UNIVERSITY OF CONN WPCFHW:2662030,500 population served2012
Cocoa_Jerry SellersHW:2673430,500 population served2012
HCUALONG BEACH_PASS CHRISTIANHW:3157030,376 population served2012
BANNING WWTFHW:2620430,319 population served2012
VICKSBURG POTWHW:3164130,264 population served2012
East District WWTP BaytownHW:3799830,260 population served2012
JOLIET WESTSIDE STPHW:2760030,246 population served2012
WEIRTON WWTPHW:3881630,213 population served2012
Bowling Green WWTP and Sewer SystemHW:3553630,208 population served2012
Barberton WWTP and Sewer SystemHW:3497630,173 population served2012
SOUTH BURLINGTON WWTPHW:3412030,099 population served2012
MILFORD HOUSATONIC WPCFHW:2657130,090 population served2012
HOUMA S REG TRTMT PLTHW:3014530,000 population served2012
NORTH PLATTE WWTPHW:3295830,000 population served2012
ALTOONA EASTERLY STPHW:3663029,994 population served2012
SMYRNA STPHW:3750929,983 population served2012
AMBLER BORO STPHW:3624029,939 population served2012
LOCK HAVEN CITY STPHW:3661529,859 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.