Santa Clarita city officials are asking residents to give up plastic grocery bags in favor of sustainable options this Thursday as part of the “A Day Without a Bag” campaign.

The city will give out free, reusable bags at all three branches of the city library system during regular business hours on Thursday. The bags are available on a first-come, first-serve basis.

Californians use more than 19 billion plastic bags every year, with residents of Los Angeles County accounting for more than 6 billion of those, according to a news release.

Those billions of bags add up to more than 147,000 tons of waste.

The Heal the Bay organization, an environmental advocacy group focusing on water pollution-related issues, is sponsoring the event in partnership with the city of Los Angeles and Albertsons, Ralphs and Vons grocery stores, among others.