SAN MARCOS, Texas — As of May 1, those visiting the San Marcos River and city-owned parks are no longer able to use single-use beverage containers in designated areas as part of the city’s “Reuse at the River” campaign.

Single-use beverage containers are defined as “any container used to hold beverages, designed to be used once before being thrown away.” Some examples include cans, plastic water bottles, juice pouches, Styrofoam cups and plastic party cups. Visitors can be fined up to $500 for using these types of disposable containers along the riverbanks.

Reusable containers that are allowed include, but aren't limited to, reusable stainless steel, durable plastic and silicone bottles.

Signage across the river and near parks marks designated areas where the single-use beverage container restriction will be enforced, also known as "No Zones." There are also designated "Go Zones" where disposable drink containers will be allowed. Click here to view a map of "Go/No Zones."

As for cooler restrictions, one cooler per person is allowed. Coolers cannot exceed a 30-quart capacity and have to be secured so that the contents don’t fall out into the river.

Visitors will also be prohibited from having open alcoholic beverage containers with a volume capacity of 5 fluid ounces or less.

“This is a huge step forward for our community and the health of our river,” said Parks and Recreation Director Jamie Lee Case.

The city will focus on education and outreach during the first year of the “Reuse at the River” campaign, rather than enforcement. But those violating posted park rules could be subject to written warnings or citations.