Wastewater plants in California

486 plants indexed. Showing 93 matching current filters.

93 plants matching filters

San Elijo WRF

Encinitas, California

San Elijo WRF in Encinitas, California serves 26,600 people. The plant operates under the US Clean Water Act NPDES program, discharging treated wastewater into the Pacific Ocean via the San Elijo Lagoon.

Not Reported 26,600

Latham WWTP

Dana Point, California

Latham WWTP in Dana Point, California serves approximately 163,559 people. The plant is located within 50 km of the coast and discharges into the local watershed.

Not Reported 163,559

Rancho Santa Fe WWTF

Del Mar, California

Rancho Santa Fe WWTF serves about 5,400 residents in Del Mar, California. The plant is located within 50 km of the Pacific coast and operates under U.S. EPA and California state regulations.

Not Reported 5,388

Gafner Water Reclamation Plant

Carlsbad, California

Gafner Water Reclamation Plant serves Carlsbad, California, treating wastewater for approximately 10,654 residents. The facility operates under US EPA and California state regulations for water reclamation.

Not Reported 10,654

Encina WPCF

Carlsbad, California

Encina WPCF in Carlsbad, California serves over 360,000 people. The plant is located within 50 km of the Pacific coast and operates under US EPA and California water quality regulations.

Not Reported 361,646

SOCWA Coastal WWTP

Dana Point, California

SOCWA Coastal WWTP in Dana Point, California serves about 57,000 people. The plant is located near the coast and operates under US Clean Water Act regulations.

Not Reported 56,966

El Toro Water District WWTF

Dana Point, California

El Toro Water District WWTF serves approximately 51,539 residents in Dana Point, California, with a designed capacity of 1.00 million gallons per day. The plant is located within 50 km of the coast and operates under U.S. Clean Water Act regulations.

Not Reported 51,539

Michelson WRP

Irvine, California

Michelson WRP in Irvine, California serves approximately 143,000 people. The plant operates under the U. S. Clean Water Act, with NPDES permits regulating its discharge into local waterways.

Not Reported 143,072

OCSD WWTP No 2

Costa Mesa, California

OCSD WWTP No 2 in Costa Mesa, California, serves over 3.4 million people. It is a major wastewater treatment facility in Orange County, operating under the US Clean Water Act.

Not Reported 3,484,265

OCSD WRP No 1

Costa Mesa, California

OCSD WRP No 1 in Costa Mesa, California serves over 1.4 million people as a major wastewater treatment facility. It operates under the US Clean Water Act and EPA NPDES permitting framework.

Not Reported 1,443,610

WESTMORLAND WWTF

Westmorland, California

WESTMORLAND WWTF serves Westmorland, California, treating wastewater for approximately 2,131 residents. The plant is located within 50 km of the coast and operates under U.S. Clean Water Act regulations.

Not Reported 2,131

NILAND WWTF

Niland, California

Niland WWTF serves 2,600 residents in Niland, California. The plant operates under the US Clean Water Act, with a designed capacity of 1.00 million gallons per day.

Not Reported 2,600

CALIPATRIA WWTF

Imperial County, California

Calipatria WWTF serves 7,980 people in Imperial County, California. The plant is located within 50 km of the coast and has a designed capacity of 1.00 million gallons per day.

Not Reported 7,980

Brentwood WWTP

Pleasant Hill, California

Brentwood WWTP serves approximately 53,194 people in Pleasant Hill, California. The plant is located within 50 km of the coast and operates under U.S. EPA and state regulations.

Not Reported 53,194

Oxnard WWTP

Oxnard, California

Oxnard WWTP serves over 227,000 people in Oxnard, California, as a major municipal wastewater facility. Located near the coast, it operates under US EPA and California regulations.

Not Reported 227,265

Tapia WRF

Unincorporated Santa Monica Mountains, California

Tapia WRF serves approximately 89,500 people in the Unincorporated Santa Monica Mountains, California. The plant is located within 50 km of the coast and discharges into the local watershed.

Not Reported 89,495

Camrosa Water Reclamation Facility

Ventura County, California

Camrosa Water Reclamation Facility in Ventura County, California serves approximately 17,740 people. The plant operates under U.S. EPA and state regulations for wastewater treatment and discharge.

Not Reported 17,740

AVALON WWRF

Avalon, California

Avalon WWRF serves the island community of Avalon, California, treating wastewater for approximately 6,300 residents. The plant is located on Santa Catalina Island, within 50 km of the coast.

Not Reported 6,300

Terminal Island WWTP

Los Angeles, California

Terminal Island WWTP serves 130,000 people in Los Angeles, California. Located near the Port of Los Angeles, it operates under US EPA NPDES permits for coastal discharge.

Not Reported 130,000

Ventura Water Reclamation Facility

San Buenaventura (Ventura), California

Ventura Water Reclamation Facility serves over 107,000 people in San Buenaventura (Ventura), California. The plant operates under the US Clean Water Act, discharging treated wastewater into the Santa Clara River watershed which drains to the Pacific

Not Reported 107,166

Frequently asked

How many wastewater treatment plants are in California?

UtilityRadar indexes 486 wastewater treatment plants in California, with treatment level, capacity, operator and discharge data on each record.

Who operates wastewater treatment in California?

Among the plants on this page, the most-referenced operator is Los Angeles Bureau of Sanitation. UtilityRadar's records show 1 plant linked to this operator.

What is the largest wastewater treatment plant in California?

Among the indexed plants, San Elijo WRF has the highest designed capacity at 1 m3/day.

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