Residents of the Diablo Grande housing development in Stanislaus County have four months to pony up $14 million or the Kern County Water Agency (KCWA) will cut off their water, according to a KCWA press release issued Wednesday. That’s how much KCWA says it is owed in back water bills by the Western Hills Water District, which serves the 600-home Diablo Grande development in the foothills west of Interstate 5. … KCWA’s press release blindsided Western Hills, which has been in negotiations with KCWA to find a solution to the complex, 25-year-long deal that soured after the 2008 housing market crash.