On Thursday, September 25, 2025, the City of Stockton Municipal Utilities Department will hold a groundbreaking for the Delta Water Treatment Plant (DWTP) Groundwater Recharge Project. The ceremony will take place from 10:00 a.m. to 12:00 p.m., at 11373 North Lower Sacramento Road.
The DWTP began operation in May 2012 and provides up to 30 million gallons per day of treated potable water from the San Joaquin Delta and Mokelumne River to nearly 200,000 customers. The DWTP was designed, in part, to protect the groundwater basin through conjunctive management of water resources and to improve Stockton’s water supply reliability portfolio. The construction of groundwater recharge basins adjacent to the treatment plant will increase the City’s conjunctive management capacity.
When complete, the Groundwater Recharge Project will allow the City to directly recharge the groundwater basin. Water recharged into the groundwater basin can be stored and pumped during dry years or extended droughts. The basins will also help to balance groundwater levels in the critically over-drafted Eastern San Joaquin Groundwater Subbasin to help meet the Region’s Sustainable Groundwater Management Act requirements…