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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
Montgomery Co Western Regional WWTP and SewersHW:3528586,372 population served2012
HARRISONBURG ROCKINGHAMHW:3839486,322 population served2012
UPPER MORELAND HATBORO JNT SEWHW:3621685,617 population served2012
SOUTH CENTRAL REGIONAL WWTPHW:3840285,600 population served2012
Anderson WWTPHW:2809085,425 population served2012
ST JOSEPH WWTPHW:3173985,300 population served2012
VALLEY SD WWTFHW:2620285,000 population served2012
Springfield WWTP and Sewer SystemHW:3542485,000 population served2012
PROCTORS CREEK WWTPHW:3839885,000 population served2012
PALM SPRINGS WWRFHW:2618584,624 population served2012
IEUA Regional Plant No4HW:2621684,163 population served2012
Tracy WWTPHW:2604483,900 population served2012
CROSS CREEK WWTPHW:3420283,500 population served2012
LPVRSA OAKS STPHW:3626283,444 population served2012
South WWTP BrownsvilleHW:3761783,200 population served2012
NORTH BUFFALO WWTPHW:3425283,043 population served2012
SEWER FARM STPHW:3809883,000 population served2012
ROCKY MOUNT WWTPHW:3422482,965 population served2012
Lucas Co Maumee River WWTPHW:3523882,649 population served2012
BCWandSA_Lower Berkeley WWTFHW:3718882,633 population served2008
YORK CITY SEW AUTHHW:3656782,615 population served2012
Schenectady C Sewers and STPHW:3373982,387 population served2012
Niagara Co SD 1 WWTPHW:3410182,200 population served2012
KAILUA WWTPHW:2734582,019 population served2012
DEKALB CO POLEBRIDGE CR WPCPHW:2702581,927 population served2012
NAMPA STPHW:2737081,557 population served2012
La Crosse WWTPHW:3928581,491 population served2012
EAST LANSING WWPHW:3083481,241 population served2012
Cranston WPCFHW:3705581,000 population served2012
Livermore WRPHW:2587780,968 population served2012
Rocky River WWTP and Sewer SystemHW:3538480,919 population served2012
Glendale West Area WRFHW:2531880,580 population served2012
SO COASTAL STPHW:2662180,249 population served2012
TERRE HAUTE WWTPHW:2805680,229 population served2012
River Oaks AWTPHW:2700680,100 population served2012
Ewing Lawrence SA CS_STPHW:3336180,096 population served2012
TOPEKA OAKLAND WWTPHW:2940480,072 population served2012
SF International Airport WQCPHW:2588080,000 population served2012
BROAD RUN REG RECL FACHW:3853080,000 population served2012
Manteca WQCFHW:2606479,846 population served2012
Westminster Big Dry Creek WWTFHW:2643579,779 population served2012
LYNCHBURG REGIONAL WWTPHW:3838779,675 population served2012
BIRMINGHAM WWTPHW:3172279,454 population served2012
SAN LEANDRO WPCPHW:2585379,452 population served2012
Springdale WWTPHW:2543079,428 population served2012
AGANA DISTRICT WWTFHW:3974079,386 population served2012
Niagara Falls C WWTPHW:3410279,353 population served2012
Landis Sewerage Authority CS_STPHW:3333579,154 population served2012
HIGH POINT EASTSIDE WWTPHW:3425179,103 population served2012
ALBANY Joshua Road WPCPHW:2703578,804 population served2012
MUNCIE SD WWTPHW:2808378,488 population served2012
TRYON CREEK STPHW:3603678,460 population served2012
GAINESVILLE KANAPAHA 5HW:2665378,355 population served2012
CRYSTAL LAKE STP 1and2HW:2776478,261 population served2012
JO CO MILL CREEK REG WWTPHW:2942677,980 population served2012
Plant 2 HarlingenHW:3761977,620 population served2012
IRWIN CREEK WWTPHW:3430977,453 population served2012
NAPA SANIT DIST WWRFHW:2584677,348 population served2012
Northwest WWTPHW:3760477,132 population served2012
SWATARA TWP AUTHHW:3636677,063 population served2012
SENECA CREEK WWTPHW:3068377,000 population served2012
TURLOCK WWTFHW:2602276,338 population served2012
DUPAGE CO DPW KNOLLWOOD STPHW:2786576,324 population served2012
Avondale WWTFHW:2533276,200 population served2012
WILLIAMSBURG W P C FHW:3848576,004 population served2012
MONROE WATER POLL CONTROL CENTERHW:3017076,000 population served2012
Hull Collection SystemHW:3073975,428 population served2012
NORTH DURHAM WATER REC FACHW:3422175,210 population served2012
MERIDIAN STPHW:2737375,092 population served2012
Albert Whitted WWTPHW:2671075,000 population served2012
City of Santa Fe sewer line rehabHW:3349475,000 population served2012
JEFFERSON COUNTY FIVE MILE WWTPHW:2524274,997 population served2012
BROKEN ARROW LYNN LANE WWTHW:3567174,859 population served2012
Rensselaer Co SD1 WWTPHW:3375874,709 population served2012
KENNEWICK POTWHW:3858774,665 population served2012
SPRINGETTSBURY TWPHW:3653574,619 population served2012
Hallsdale Powell Beaver Creek STPHW:3754774,555 population served2012
SPRINGFIELD METRO SD SUGAR CREEKHW:2769474,445 population served2012
EMPIRE WWTPHW:3121274,204 population served2012
Linden Roselle SA CS CSO_STPHW:3324774,148 population served2012
OSHKOSH WWTPHW:3937374,077 population served2012
Delaware Co Alum Creek WWTPHW:3478274,000 population served2012
STAMFORD WPCFHW:2660273,848 population served2012
EDMONDS STPHW:3857273,790 population served2012
EAU CLAIRE WWTPHW:3919773,694 population served2012
APPLETON WWTPHW:3907673,598 population served2012
FULTON CO CAMP CREEK WPCPHW:2702073,506 population served2012
Goleta WWTFHW:2589673,500 population served2012
Humacao Regional WWTPHW:3978673,478 population served2012
IDAHO FALLS STPHW:2736973,459 population served2012
O FALLON STPHW:3190073,429 population served2012
LAPLACE PLANTHW:3016273,000 population served2012
EAST RICHLAND WTPHW:3724473,000 population served2008
MANHATTAN WWTPHW:2937772,960 population served2012
Butler Co Upper Mill Creek WWTPHW:3501172,774 population served2012
Guayama Regional WWTPHW:3977972,771 population served2012
NORTH COUNTY REGIONAL WWTFHW:2676272,750 population served2012
Daytona Beach Westside Regional STPHW:2689372,590 population served2012
SAUGET AMERICAN BOTTOMS REG STPHW:2763572,467 population served2012
Merced WWTPHW:2601671,996 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.