981 88 38 39·669 278 974 Mon–Fri · International shipping
comercial.asb.sl@aguassb.com ISO 9001 · view certificate
Central · 981 88 38 39 Comercial · 669 278 974 Central de ventas · 616 600 780 comercial.asb.sl@aguassb.com ISO 9001 · view certificate

ES · English

Request a study
669 278 974 Request a study

World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in United States · California

← Back to the map

All countries

486 inventory records · HydroWASTE v1.0 / United States

Data years: 2012. The inventory date does not establish current operation.

486 results

CompareNameNative sizeYear
Hyperion WWTPHW:259544,325,314 population served2012
Joint WPCPHW:259433,530,120 population served2012
OCSD WWTP No 2HW:262273,484,265 population served2012
Sacramento Regional WWTFHW:259742,809,116 population served2012
Point Loma WWTFHW:262512,066,532 population served2012
San Jose_Santa Clara WPCPHW:258521,546,938 population served2012
OCSD WRP No 1HW:262261,443,610 population served2012
DC Tillman WRPHW:259571,100,000 population served2012
San Jose Creek WRPHW:259451,000,000 population served2012
Southeast WPCPHW:25843949,125 population served2012
Fresno Clovis Regional WRFHW:26007940,220 population served2012
East Bay MUD Main WWTPHW:25848781,359 population served2012
Central Contra Costa WWTFHW:25840582,896 population served2012
IEUA Regional Plant No1HW:26215479,792 population served2012
Riverside Regional WQCPHW:26209431,519 population served2012
Delta Diablo Sanitation Dist WWTFHW:25838374,054 population served2012
MRWCPA WWTFHW:25891373,273 population served2012
Los Coyotes WRPHW:25947370,000 population served2012
Encina WPCFHW:26241361,646 population served2012
Alvarado WWTFHW:25872350,000 population served2012
North City WRPHW:26252330,339 population served2012
Stockton Regional WWCFHW:25988316,104 population served2012
San Bernardino WRPHW:26210301,063 population served2012
LA Glendale WRPHW:25956272,700 population served2012
Palo Alto Regional WQCPHW:25835234,798 population served2012
Oxnard WWTPHW:25967227,265 population served2012
Modesto WWTFHW:26017224,050 population served2012
Long Beach WRPHW:25948220,000 population served2012
S BAYSIDE WWTPHW:25881211,108 population served2012
Moreno Valley Regional WRFHW:26212196,495 population served2012
Oceanside WPCPHW:25845194,000 population served2012
Victor Valley Regional WWRPHW:26168185,376 population served2012
San Luis Rey WWTPHW:26258178,575 population served2012
SUNNYVALE WWTFHW:25833164,522 population served2012
Latham WWTPHW:26246163,559 population served2012
Valencia WRPHW:25950163,000 population served2012
Whittier Narrows WRPHW:25946162,611 population served2012
Pomona WRPHW:25944162,200 population served2012
Lancaster WRPHW:25951160,000 population served2012
Clear Creek WWTFHW:26040158,803 population served2012
IEUA Regional Plant No5HW:26217153,100 population served2012
Fairfield Suisun WWTPHW:25849152,000 population served2012
Palmdale WRPHW:25952150,000 population served2012
Hayward WPCFHW:25841147,113 population served2012
Bakersfield WWTP 2HW:25975146,363 population served2012
SANTA CRUZ WWTFHW:25890145,995 population served2012
Oro Loma WWTFHW:25858145,600 population served2012
San Mateo WWTFHW:25854145,044 population served2012
Michelson WRPHW:26230143,072 population served2012
Hale Avenue RRFHW:26254142,952 population served2012
Bakersfield WWTP 3HW:25976141,000 population served2012
South Bay WRPHW:26253134,433 population served2012
Terminal Island WWTPHW:25955130,000 population served2012
Hill Canyon WWTPHW:25935128,031 population served2012
San Jacinto Regional WRFHW:26211127,817 population served2012
Simi Valley WWTPHW:25933125,317 population served2012
Dublin San Ramon WWTFHW:25832120,722 population served2012
Pleasant Grove WWTPHW:26092120,000 population served2012
VSFCD WWTFHW:25857115,942 population served2012
IEUA Carbon Canyon WRFHW:26218115,345 population served2012
Central Marin San Agency WWTFHW:25855114,000 population served2012
Perris Valley Regional WRFHW:26213109,315 population served2012
Ventura Water Reclamation FacilityHW:25934107,166 population served2012
SO SF SAN BRUNO WWTFHW:25856105,307 population served2012
Temecula Valley Regional WRFHW:26236103,092 population served2012
Daly City WWTPHW:25851102,825 population served2012
Visalia WWTPHW:26023102,684 population served2012
RICHMOND WWTFHW:25842101,373 population served2012
SANTA MARIA WWTFHW:25907100,062 population served2012
Dry Creek WWTPHW:2609199,965 population served2012
Corona WWTF 1HW:2622399,000 population served2012
Rialto WWTPHW:2623497,873 population served2012
Easterly WWTPHW:2607795,483 population served2012
GILROY WWTFHW:2591895,068 population served2012
SAN PABLO WWTFHW:2586190,000 population served2012
Tapia WRFHW:2596689,495 population served2012
SANTA BARBARA WWTFHW:2590589,082 population served2012
Chico WPCPHW:2597788,900 population served2012
VALLEY SD WWTFHW:2620285,000 population served2012
PALM SPRINGS WWRFHW:2618584,624 population served2012
IEUA Regional Plant No4HW:2621684,163 population served2012
Tracy WWTPHW:2604483,900 population served2012
Livermore WRPHW:2587780,968 population served2012
SF International Airport WQCPHW:2588080,000 population served2012
Manteca WQCFHW:2606479,846 population served2012
SAN LEANDRO WPCPHW:2585379,452 population served2012
NAPA SANIT DIST WWRFHW:2584677,348 population served2012
TURLOCK WWTFHW:2602276,338 population served2012
Goleta WWTFHW:2589673,500 population served2012
Merced WWTPHW:2601671,996 population served2012
South Tahoe WWTFHW:2616571,012 population served2012
SO SAN LUIS OB CO WWTFHW:2592870,358 population served2012
MADERA STPHW:2608166,113 population served2012
Davis WPCPHW:2608565,890 population served2012
Watsonville WWTFHW:2591064,622 population served2012
MNWD WWTP 3 AHW:2626463,100 population served2012
COLTON WWTFHW:2622860,100 population served2012
4S Ranch Wastewater Treatment PlantHW:2626659,518 population served2012
Ellis Creek WRFHW:2587859,462 population served2012
Lodi WPCFHW:2601459,000 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.