Wastewater plants in California

486 plants indexed. Showing 74 matching current filters.

74 plants matching filters

4S Ranch Wastewater Treatment Plant

Carlsbad, California

4S Ranch Wastewater Treatment Plant in Carlsbad, California serves approximately 59,518 people. The facility is located within 50 km of the Pacific coast and operates under U.S. EPA and California state regulations.

Not Reported 59,518 Medium

Los Alisos WRP

Dana Point, California

Los Alisos WRP in Dana Point, California serves 46,500 people. The plant is within 50 km of the coast and discharges into the San Juan Creek watershed, ultimately reaching the Pacific Ocean.

Not Reported 46,500 Medium

MNWD WWTP 3 A

Mission Viejo, California

MNWD WWTP 3 A serves Mission Viejo, California, treating wastewater for approximately 63,100 residents. The plant operates under the US Clean Water Act and discharges into the local watershed.

Not Reported 63,100 Medium

OSO CREEK WWRF

Mission Viejo, California

Oso Creek WWRF in Mission Viejo, California serves about 31,400 people. The plant is located within 50 km of the coast and discharges into the local watershed.

Not Reported 31,398 Medium

San Luis Rey WWTP

Oceanside, California

San Luis Rey WWTP in Oceanside, California serves approximately 178,575 people. The plant operates under the US Clean Water Act and EPA NPDES permit program.

Not Reported 178,575 Medium

LA SALINA WWTF

Oceanside, California

La Salina WWTF is a municipal wastewater treatment facility in Oceanside, California, serving approximately 40,000 people. It operates under the US Clean Water Act framework with NPDES permitting.

Not Reported 40,000 Medium

San Clemente WRP

San Clemente, California

San Clemente WRP is a municipal wastewater treatment plant in San Clemente, California, serving approximately 48,000 people. The facility is located within 50 km of the Pacific Ocean coast.

Not Reported 48,000 Medium

South Bay WRP

San Diego, California

South Bay WRP in San Diego, California serves over 134,000 people. The plant operates under the US Clean Water Act and EPA NPDES permitting framework.

Not Reported 134,433 Medium

North City WRP

San Diego, California

North City WRP is a major wastewater treatment plant in San Diego, California, serving over 330,000 people. It operates under the US Clean Water Act and NPDES permitting framework.

Not Reported 330,339 Medium

Point Loma WWTF

San Diego, California

Point Loma WWTF is a major wastewater treatment facility in San Diego, California, serving over 2 million people. It operates under the US Clean Water Act and discharges treated effluent into the Pacific Ocean.

Not Reported 2,066,532 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 Medium

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 City of San Diego Public Utilities Department. UtilityRadar's records show 3 plants linked to this operator.

What is the largest wastewater treatment plant in California?

Among the indexed plants, 4S Ranch Wastewater Treatment Plant has the highest designed capacity at 1 m3/day.

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