LOS ANGELES (CBSLA.com) — Plastic bags may soon be banned in the entire state of California.

SoCal lawmakers Sen Alex Padilla (D-Pacoima), Sen. Kevin de Leόn (D-Los Angeles) and Sen. Ricardo Lara (D-Huntington Park/Long Beach) have introduced a bill that bans the bags at all supermarkets, liquor stores and pharmacies statewide.

READ MORE: Jacqueline Avant, Wife Of Music Executive Clarence Avant, Found Shot To Death In Beverly Hills Home Invasion

The proposal, which has failed three times in the past, would require merchants to charge 10 cents for alternative bags, such as paper.

“I’m very optimistic, but I know we still have work to do in the state assembly to get the bill to the governor’s desk,” Sen. Padilla told KNX 1070.

READ MORE: FBI Raids Northridge Residence For Fraud Case

The ban does not apply to single-use produce bags.

If approved, the ban would take effect for grocery stores in July 2015, and for smaller stores in 2016.

MORE NEWS: 'Survivor 41' Episode 11 Recap: Do Or Die

Los Angeles, Long Beach and nearly 100 cities and counties in California already have plastic bag bans in place.