The state Assembly has passed a bill requiring large airports to make accommodations for traveling mothers to pump breast milk.
AB1787 advanced Wednesday on a 64-5 vote with no debate.
Five Republicans voted against the effort.
Democratic Assemblywoman Bonnie Lowenthal of Long Beach says her bill helps working mothers who want to breastfeed by providing comfortable and private rooms for pumping.
The bill applies to all airports in California offering commercial passenger service including Palm Springs International.
San Francisco International Airport is the only one currently offering such accommodations.
Under the bill, existing terminals must offer rooms with an electrical outlet for the pump and a chair, while new terminals must include rooms with sinks.
If signed into law, AB1787 would take effect in 2016.