Antioch’s plan to build a long-awaited brackish desalination plant got a major boost this week when the City Council officially accepted a $10 million state grant that will pay toward design and construction.

The city’s grant was one of three statewide to be awarded in March 2018 from the Department of Water Resources for desalination projects under Proposition 1, but environmental reviews and other work still need to be done to free up the money.

Proposition 1, approved in 2014, set aside $725 million in grants and loans for water recycling, treatment and desalination projects.