The Santa Rosa City Council approved mandatory water-use restrictions for its residents and businesses starting Thursday, becoming the sixth city in Sonoma County to cut back on water.

The motion to approve the water-shortage contingency plan — which mandates residents and businesses reduce water use by 20% — passed with five ayes from Council Members Eddie Alvarez, John Sawyer, Tom Schwedhelm, Mayor Chris Rogers and Vice Mayor Natalie Rogers. Council Members Victoria Fleming and Jack Tibbetts were absent.