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Joint Water Pollution Control Plant

Joint Water Pollution Control Plant (JWPCP) is a vital facility that plays a crucial role in safeguarding the environment and public health by treating wastewater and reducing water pollution. Located in Los Angeles, California, JWPCP is one of the largest treatment plants in the world and serves a population of over 4 million people.

Established in the 1950s, JWPCP is a joint venture between the City of Los Angeles and the County of Los Angeles, with both entities working together to ensure the proper treatment and disposal of wastewater. The plant is operated by the Los Angeles Department of Public Works and is responsible for treating over 270 million gallons of wastewater every day.

One of the key functions of JWPCP is to remove pollutants and contaminants from wastewater before it is discharged into the environment. The treatment process at the plant involves several stages, including screening, primary clarification, biological treatment, secondary clarification, and disinfection. Each stage is designed to remove different types of pollutants, such as solids, organic matter, and pathogens, to ensure that the treated water is safe to be discharged into the ocean.

In addition to treating wastewater, JWPCP also plays a critical role in recycling and reusing water. The plant has a state-of-the-art water recycling facility that is capable of producing over 30 million gallons of recycled water every day. This recycled water is used for irrigation, industrial processes, and even drinking water after undergoing advanced treatment processes.

Furthermore, JWPCP is committed to sustainability and environmental stewardship. The plant has implemented various green initiatives, such as energy-efficient operations, renewable energy generation, and habitat restoration projects. These initiatives not only reduce the plant’s carbon footprint but also contribute to the overall health and well-being of the surrounding ecosystem.

JWPCP has been recognized for its innovative approach to water treatment and environmental protection. In 2018, the plant received the Water Environment Federation’s George W. Burke Jr. Award for its outstanding achievements in wastewater treatment and pollution control. This prestigious award is a testament to JWPCP’s dedication to excellence and constant pursuit of environmental sustainability.

In conclusion, Joint Water Pollution Control Plant is a vital facility that plays a crucial role in protecting the environment and public health in Los Angeles. Through its advanced treatment processes, water recycling efforts, and commitment to sustainability, JWPCP sets a high standard for wastewater treatment facilities around the world. As the population grows and environmental challenges increase, it is more important than ever to support facilities like JWPCP in their mission to safeguard our natural resources and ensure a clean and healthy environment for future generations.


1. City of Los Angeles Department of Public Works. “Joint Water Pollution Control Plant.”
2. Water Environment Federation. “George W. Burke Jr. Award.”


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