San Jose Water Group is the second largest investor-owned water utility in the country, serving nearly 1.5 million people in Silicon Valley.

Locals who’ve kept a close eye on the company, however, say regulators failed to determine whether the tie-up serves the public interest.

State regulators have launched an investigation to determine whether the San Jose Water Co. over-billed customers for 30 years.

A planned tie-up between San Jose Water Company and another private utility on the East Coast has morphed into a four-way merger battle.

San Jose Water Co.’s latest pitch to raise rates comes before the CPUC Thursday, and irate customers are gearing up for a showdown.

San Jose Water Company, the investor-owned utility that provides water for most of the South Bay, is angling for yet another rate hike.