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

Wastewater treatment plants in United States · California

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486 inventory records · HydroWASTE v1.0 / United States

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

486 results

CompareNameNative sizeYear
BUELLTON WWTFHW:258933,628 population served2012
Whispering Palms WPCFHW:262473,624 population served2012
Heritage Ranch Sewer Treatm PlantHW:259013,600 population served2012
GROVELAND WWTFHW:260673,550 population served2012
HEBER WWTFHW:261913,500 population served2012
WEST PARLIER WWTFHW:260383,474 population served2012
WHEATLAND WWTFHW:261443,469 population served2012
DUNSMUIR WWTFHW:260843,456 population served2012
SALIDA TRTMNT PLANTHW:260783,257 population served2012
Armona WWTFHW:260433,239 population served2012
MURPHYS WWTFHW:261353,200 population served2012
RIDGEMARK WWTFHW:259313,120 population served2012
RIO DELL WWTFHW:257963,100 population served2012
Cascade Shores WWTPHW:261593,081 population served2012
NEVADA CITY WWTFHW:260833,064 population served2012
West Point STPHW:260273,000 population served2012
Forest Meadows STPHW:260343,000 population served2012
YOUNTVILLE VETERANS WWTFHW:258822,999 population served2012
Cottonwood WWTPHW:261212,960 population served2012
WEED WWTFHW:258152,959 population served2012
PIXLEY WWTFHW:261372,833 population served2012
JUNE LAKE WWTFHW:261702,828 population served2012
BODEGA BAY WWTFHW:258062,800 population served2012
Copper Cove STPHW:260312,783 population served2012
NILAND WWTFHW:261942,600 population served2012
Deuel Vocational Institution WWTFHW:260762,582 population served2012
Occidental WWTFHW:257942,543 population served2012
POPLAR WWTFHW:261542,500 population served2012
San Andreas Sanitary District WWTPHW:260692,449 population served2012
MONTALVO WWTFHW:259582,400 population served2012
Oakmont WWTPHW:258102,300 population served2012
Mendocino City WWTFHW:258222,256 population served2012
Piru WWTFHW:259642,250 population served2012
MARIPOSA WWTFHW:260682,246 population served2012
TULELAKE STPHW:257802,221 population served2012
BORON WWTFHW:261642,213 population served2012
RICHGROVE WWTFHW:260542,200 population served2012
REDWOODS CC WWTFHW:258232,176 population served2012
WESTMORLAND WWTFHW:261972,131 population served2012
ARBUCKLE WWTFHW:260992,100 population served2012
Lower Moosa Canyon WRFHW:262562,100 population served2012
PORTOLA WWTFHW:259812,050 population served2012
LONDON WWTFHW:261332,041 population served2012
CLEGHORN WWTFHW:261752,030 population served2012
CHESTER WWTFHW:261172,002 population served2012
Summerland WWTPHW:259092,000 population served2012
WESTWOOD WWTFHW:260582,000 population served2012
Strathmore WWTFHW:261401,902 population served2012
TERRA BELLA WWTFHW:261421,859 population served2012
HAMILTON CITY WWTFHW:261251,824 population served2012
SAN JUAN BAUTISTA WWTFHW:259121,800 population served2012
Woodville WWTFHW:261451,800 population served2012
BIGGS WWTFHW:261131,793 population served2012
Willow Creek WWTFHW:257971,754 population served2012
PLYMOUTH WWTFHW:260371,744 population served2012
OAKHURST WWTFHW:260391,726 population served2012
LA CANADA WRPHW:259531,700 population served2012
McCloud WWTFHW:261341,700 population served2012
BUTTONWILLOW WWTFHW:261161,660 population served2012
DEL REY WWTFHW:260511,650 population served2012
Tipton WWTFHW:261431,644 population served2012
CLEARLAKE OAKS WWTFHW:261181,607 population served2012
RANCHO DEL CAMPO WWTFHW:262601,585 population served2012
KETTLEMAN CITY STPHW:260571,528 population served2012
LATON WWTPHW:261281,477 population served2012
TRANQUILLITY WWTFHW:259961,473 population served2012
Malaga WWTFHW:261471,468 population served2012
GRATON WWTFHW:258031,461 population served2012
KIRKWOOD MEADOWS WWTFHW:261061,458 population served2012
Ferndale WWTFHW:257851,457 population served2012
MONTAGUE WWTFHW:257811,456 population served2012
DESERT LAKE WWTFHW:261791,405 population served2012
COUNTRY CLUB EST WWTFHW:259021,400 population served2012
SAN MIGUEL STPHW:259031,400 population served2012
Lake Cachuma County Park WWTFHW:258851,390 population served2012
BOMBAY BEACH WWRFHW:261881,343 population served2012
Linden WWTFHW:261311,339 population served2012
SEELEY CREEK WWTFHW:261741,338 population served2012
GARBERVILLE WWTFHW:257891,300 population served2012
POINT ARENA WWTFHW:258121,275 population served2012
LOYALTON WWTFHW:261461,265 population served2012
BLUE LAKE WWTFHW:257841,225 population served2012
DESERT SHORES WWTFHW:261951,212 population served2012
Upland Hills WRPHW:262191,200 population served2012
CHUALAR TREATMENT PONDSHW:258951,190 population served2012
Maxwell WWTPHW:260151,190 population served2012
SEELEY CWD WWTFHW:261961,122 population served2012
Newcastle WWTFHW:259911,112 population served2012
Saticoy SD Sewage Treatment PlantHW:259591,100 population served2012
LYTLE CREEK WWTFHW:262351,070 population served2012
NYELAND ACRES WWTFHW:259651,052 population served2012
Happy Camp WWTPHW:257981,050 population served2012
Shelter Cove WWTFHW:258161,045 population served2012
MOKELUMNE HILL WWTFHW:260971,010 population served2012
BEAR VALLEY WWTFHW:260521,000 population served2012
Placer County WWTF 3HW:260871,000 population served2012
Borrego Springs WWRFHW:26262978 population served2012
BIOLA WWTPHW:26114964 population served2012
Leavitt Lake Evaporation PondsHW:26178950 population served2012
Arnold STPHW:26029900 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.