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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
N KY SD1 DRY CREEK STPHW:29859368,000 population served2012
DURHAM STPHW:36038363,059 population served2012
DEKALB CO SNAPFINGER CR WPCPHW:27026362,993 population served2012
Greater Lawrence Sanitary DistrictHW:30717362,545 population served2012
Ocean County UA Central WPCF CS_STPHW:33318362,479 population served2012
Ocean County UA Northern WPCF CS_STPHW:33317361,899 population served2012
Encina WPCFHW:26241361,646 population served2012
Spokane Riverside Park POTWHW:38659361,098 population served2012
MADISON MSD STPHW:39305358,612 population served2012
Akron WWTP and SewersHW:34777358,376 population served2012
LOWER POTOMAC STPHW:38494354,403 population served2012
Alvarado WWTFHW:25872350,000 population served2012
OCUD_South WWTFHW:26679350,000 population served2012
AUGUSTA WWTPHW:27036345,276 population served2012
GRAND RAPIDS WWTPHW:30894338,045 population served2012
Leon Creek WWTPHW:38049337,267 population served2012
FORT WAYNE WPCPHW:28038335,161 population served2012
Memphis S T E MAXSON WWTPHW:37452333,148 population served2012
North City WRPHW:26252330,339 population served2012
Toledo Bay View Park WWTP and SewersHW:35451329,989 population served2012
ATLANTIC W P C FHW:38491329,550 population served2012
Roberto Bustamante WWTPHW:37605326,280 population served2012
HENDERSON AWTHW:33141325,000 population served2012
WATER RECLAMATION PROJECTHW:38501323,756 population served2012
NEORSD Easterly WWTPHW:35049322,387 population served2012
Colorado Springs Utilities LVSWWTPHW:26267321,697 population served2012
HOLLYWOOD WPCPHW:26641320,299 population served2012
Wilson Creek WWTPHW:37875318,365 population served2012
Stockton Regional WWCFHW:25988316,104 population served2012
PHILADELPHIA WATER DEPT SEHW:36254313,824 population served2012
PCRWRD Ina Road WPCFHW:25353312,957 population served2012
Indianapolis SOUTHPORT WWTPHW:28009310,123 population served2012
BOAT HARBOR W P C FHW:38483306,918 population served2012
South Mesquite Creek WWTPHW:37873306,300 population served2012
ROCK CREEK STPHW:36040305,008 population served2012
METRO WWTPHW:37179304,735 population served2008
San Bernardino WRPHW:26210301,063 population served2012
NEW ORLEANS EAST BANKHW:30360300,000 population served2012
Southwest HoustonHW:38007300,000 population served2012
LOHMEYER REG WWTPHW:26642297,500 population served2012
Phoenix 23rd Ave WWTPHW:25323296,140 population served2012
Carolina Regional WWTPHW:39747295,666 population served2012
SENECA TREATMENT PLANTHW:31209294,120 population served2012
Sims Bayou WWTPHW:38000292,600 population served2012
Reno City of TMWRFHW:33150288,000 population served2012
JAMES C KIRIE WRPHW:27790287,890 population served2012
South Essex Sewer District WWTPHW:30697286,007 population served2012
JOHN E EGAN WRPHW:27789285,127 population served2012
LITTLETON_ENGLEWOOD WWTPHW:26329283,741 population served2012
New York C 26th Ward WPCPHW:33571283,428 population served2012
New York C Red Hook WPCPHW:33572281,150 population served2012
Dayton WWTP and Sewer SystemHW:35069278,226 population served2012
FOX METRO WATER RECLAMATION DISTRICTHW:27748273,451 population served2012
LA Glendale WRPHW:25956272,700 population served2012
LBVSD ATHERTON PLANTHW:31848271,772 population served2012
Onondaga Co Metro Syracuse STPHW:33932270,398 population served2012
East Central Regional WWTPHW:26720269,398 population served2012
Albany Co ACSD North STPHW:33747265,567 population served2012
WYANDOTTE WWTPHW:31186264,724 population served2012
GARY SANITARY DISTRICTHW:28024262,451 population served2012
BLUE LAKE TREATMENT PLANTHW:31208259,174 population served2012
MCALPINE CREEK WWTPHW:34308259,039 population served2012
SALEM WILLOW LAKE STPHW:36047257,792 population served2012
ALEXANDRIA STPHW:38492257,768 population served2012
Chattanooga Moccasin Bend WWTPHW:37343253,251 population served2012
Rowlett Creek WWTP 1HW:37871252,965 population served2012
PAPILLION WWTPHW:32965249,887 population served2012
ARLINGTON CO WPCPHW:38493248,647 population served2012
PLUM ISLAND TRTMT PLANTHW:37193246,850 population served2008
Brushy Creek Regional WWTPHW:37794245,870 population served2012
New York C Oakwood Beach WPCPHW:33578244,918 population served2012
New York C Port Richmond WPCPHW:33573244,628 population served2012
Iron Bridge Regional WRFHW:26674242,403 population served2012
MAULDIN RD PLANTHW:37232238,946 population served2008
SOUTH COLUMBUS WPCPHW:27034238,622 population served2012
JEFFERSON CO VALLEY CREEK WWTPHW:25241237,490 population served2012
RICHMOND WWTPHW:38396236,551 population served2012
Springfield Wastewater SystemHW:30722235,804 population served2012
CHESAPEAKE ELIZABETH WPCFHW:38487235,378 population served2012
Palo Alto Regional WQCPHW:25835234,798 population served2012
ROCKY RIVER WWTPHW:34160231,317 population served2012
Green Bay MSD CombinedHW:39565228,964 population served2012
Oxnard WWTPHW:25967227,265 population served2012
Modesto WWTFHW:26017224,050 population served2012
Long Beach WRPHW:25948220,000 population served2012
SOUTHEAST WRPHW:37694220,000 population served2012
Rahway Valley SA CS_CSO_STPHW:33253219,619 population served2012
JEFFERSON COUNTY VILLAGE CREEK WWTPHW:25243218,741 population served2012
TACOMA CENTRAL STP 1HW:38665218,383 population served2012
YCUA WWTPHW:30979218,272 population served2012
HAMMOND WWTPHW:28025218,132 population served2012
BATON ROUGE SOUTH WWTPHW:30354217,711 population served2012
WYOMING VALLEY SAN AUTHHW:36436216,923 population served2012
HARTFORD WPCFHW:26559215,737 population served2012
MWMC EUGENE_SPRINGFIELD STPHW:36054215,588 population served2012
Monmouth Co Bayshore Outfall AuthHW:33287213,821 population served2012
COBB COUNTY SUTTON WPCPHW:27022213,408 population served2012
FIELDS POINT WWTFHW:37062212,743 population served2012
S BAYSIDE WWTPHW:25881211,108 population served2012
HENRICO REGIONAL WWTPHW:38391209,300 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.