On 21 May 2013, Sacramento Superior Court Judge Timothy M. Frawley ruled that the Central Valley Regional Water Quality Control Board’s (Regional Board) renewal of the irrigated lands program waiver of waste discharge requirements violated California’s antidegradation and non-point source control policies. CSPA filed the lawsuit on 25 May 2012.
The Court issued a peremptory writ of mandamus directing the Regional Board to take all actions necessary to bring the irrigated lands regulatory program into compliance the Antidegradation and Nonpoint Source policies by 14 January 2015. The Court maintained continuing jurisdiction.