An inmate’s death in Stockton from Legionnaires’ disease marks the third time in four years the rare form of pneumonia has struck California’s state prisons – and has laid bare a history of contamination and other problems plaguing water supplies in the corrections system. Incidents of tainted water have spawned inmate lawsuits, expensive repairs, hefty bills for bottled water and fines, putting a multimillion-dollar burden on the taxpayer-funded corrections system, according to documents and court records reviewed by McClatchy. Now the state Department of Corrections and Rehabilitation, which oversees a network of 76 prisons, youth lockups and inmate firefighter camps, is dealing with a death.