<Tr> <Td> Town of Jamestown </Td> <Td> 18 September 2017 </Td> <Td> April, 2018 </Td> <Td> Plastic bag ban . Reusable bags must be at least 4 mils . </Td> </Tr> <Tr> <Td> Puerto Rico </Td> <Td> Puerto Rico </Td> <Td> October 2015 </Td> <Td> July 2016 </Td> <Td> Plastic bag ban . </Td> </Tr> <Tr> <Td> Texas </Td> </Tr> <Tr> <Td> City of Austin </Td> <Td> March 2012 </Td> <Td> March 2013 </Td> <Td> Plastic bag and paper bag ban . Reusable plastic bags must be at least 4 mils . </Td> </Tr>

When does the ban on plastic bags start