Discussion: Of the 19 cities and towns in Contra Costa County, ten have adopted a polystyrene ban, the earliest in 1993. All ordinances ban the use of polystyrene food containers, while three ban the use of other polystyrene products like packing peanuts, packaging materials, and ice chests. To be consistent with most of the surrounding cities, the County is only banning food and beverage containers in unincorporated communities. The County is required to reduce trash in its waterways. In the environment, polystyrene containers break down into smaller and smaller pieces, creating more trash than alternative food and beverage containers.