Isleton WWTF - Secondary Wastewater Treatment Plant in Isleton, California

Isleton WWTF is a municipal wastewater treatment facility located in Isleton, California, a small community in Sacramento County. The plant serves a population of 828 and operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges to surface waters. The plant has a designed capacity of 1,627.72 million gallons per year and currently treats an annual discharge volume of 681.37 million gallons. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting the national standards for conventional pollutants. Treated effluent from Isleton WWTF is discharged into the Sacramento-San Joaquin Delta, a critical estuarine ecosystem that supports diverse aquatic life and provides water supply for much of California. The Delta ultimately drains into San Francisco Bay and the Pacific Ocean, making the plant's discharge important for downstream water quality and habitat conservation.

Isleton WWTF discharges into the Sacramento-San Joaquin Delta, a vast network of waterways that forms the eastern portion of the San Francisco Bay estuary. This delta is a vital habitat for fish species such as Chinook salmon and Delta smelt, and its water quality is closely monitored due to its role in supplying drinking water to millions of Californians. The plant's secondary treatment helps protect this sensitive ecosystem from nutrient pollution and organic loading.