The State Water Resources Control Board approved $3 million to the city of Rialto and West Valley Water District to study and create a cleanup plan for a plume of perchlorate, water officials said Wednesday.

The plume has tainted more than a dozen drinking wells, officials said.

The five-member board voted unanimously Tuesday to grant the money once they come up with their plan, said William L. Rukeyser, a board spokesman.

A state hearing aimed at finding those responsible for the perchlorate, an ingredient of rocket fuel and fireworks, has been delayed several times.

—Jennifer Bowles
jbowles@PE.com

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