SOUTH PORTLAND — The City Council on Monday night unanimously passed the first reading of an ordinance that would ban smoking within 25 feet of city beaches, playgrounds, recreational fields and walking trails.

South Portland already prohibits smoking within 20 feet of municipal buildings, and smoking is banned at state parks and beaches.

The proposal was brought to the council last week by South Portland High School students Elisa Martin and twin brothers Conor and Jackson Beck. It’s modeled after ordinances passed in the last five years in Westbrook, Portland, Lewiston and Scarborough.

A second reading of the ordinance is expected at the July 6 council meeting.

In other action, councilors approved details for a new farmer’s market that will be open on Thursdays at Thomas Knight Park. Parts of Waterman Drive and Ocean Street will be closed between 2 p.m. and 7 p.m. on Thursdays, from July 14 to Oct. 31.