WPCF Phase II & Nutrient Management Projects

Fund 611, 612/Multiple Project Numbers

FY 2023 - 2032 Capital Improvement Program

Pictured above are the primary clarifiers at the Water Pollution Control Facility (WPCF). The WPCF treats 11.3 million gallons of wastewater every day, generated by Hayward residents and businesses.

The City's Water Pollution Control Facility (WPCF) Phase II Facilities Plan, which was completed in 2020, was prepared to guide the WPCF infrastructure needs for the next twenty years. The Phase II Facilities Plan addresses future regulatory requirements restricting discharge of nutrients to the Bay. Although the San Francisco Bay has not been adversely impacted by nutrient loading, discharge of nutrients is a growing concern and, as a result, recent requirements have been developed regulating their discharge into the Bay.


In 2020, staff worked with firm Black & Veatch (B&V) to develop a nutrient management strategy (NMS) as part of the WPCF Phase II Facilities Plan and in spring 2022, staff began the process of identifying a consultant to design the Phase II Improvements. The design effort is estimated to cost between $8 million and $12 million. Construction of the improvements is currently estimated to cost $130 million, $70 million of which is unfunded. In 2023, staff plan to apply for both a State Revolving Fund (SRF) and USEPA Water Infrastructure Finance and Innovation Act (WIFIA) loan to help fund the $60 million in estimated construction costs that is currently programmed in FY 2024 - 2025 in the CIP. In addition to the design and construction of the Phase II WPCF Upgrade, the project includes a new administration building and laboratory, as well as other related improvement needs.