Overview
Treasure Island WWTF in San Francisco, California serves approximately 4,818 people. The plant is located on an island in San Francisco Bay, within 50 km of the Pacific coast.
Treasure Island WWTF is a wastewater treatment facility located on Treasure Island in San Francisco, California, United States. The plant serves a population of about 4,818 residents and is situated in the San Francisco Bay, a major estuarine environment. As a small-scale facility, it plays a key role in managing wastewater from this island community. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. The facility's designed capacity is 1.00 million gallons per day, indicating it is sized for a relatively small population. Regulatory oversight is provided by the U.S. Environmental Protection Agency and the California State Water Resources Control Board through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant discharges treated wastewater into the San Francisco Bay, which is part of the larger San Francisco Bay-Delta estuary system. This water body supports diverse aquatic life, including fish species such as salmon and sturgeon, and is an important migratory corridor for birds. The bay ultimately connects to the Pacific Ocean through the Golden Gate strait, making the plant's discharge significant for both local and downstream marine environments.
Environmental context
Treasure Island WWTF discharges into the San Francisco Bay, a large estuary that receives freshwater from the Sacramento and San Joaquin rivers and connects to the Pacific Ocean via the Golden Gate. The bay supports a rich ecosystem, including eelgrass beds, tidal marshes, and diverse fish and bird populations. The plant's location on an island within the bay means its effluent directly influences local water quality and the health of sensitive habitats.
Frequently asked questions
Treasure Island WWTF is located on Treasure Island in San Francisco, California, United States. The address is Avenue of the Palms, San Francisco, California 94130.
The plant serves approximately 4,818 people, primarily residents of Treasure Island, a man-made island in San Francisco Bay.
The plant discharges treated wastewater into the San Francisco Bay, a large estuary that connects to the Pacific Ocean. The discharge is regulated under the U.S. Clean Water Act.
The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. It is permitted through the National Pollutant Discharge Elimination System (NPDES) program, overseen by the EPA and California state authorities.
For small communities in the U.S., secondary treatment is standard, often using activated sludge or lagoon systems. The Clean Water Act mandates secondary treatment to reduce organic matter and suspended solids before discharge.
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