There are 8 E85 stations in Watertown, South Dakota. Ethanol content at these stations can range from 51% to 85% depending on the supplier and time of year. Use E85 Scout to see community-tested percentages before you fill up.
All E85 Stations in Watertown
Sioux Valley Co-op - Cenex
220 10th St NW, Watertown, SD 57201
Cenex - Sioux Valley Coop Highway 212
1601 9th Ave SE, Watertown, SD 57201
Stone's Truck Stop
3801 9th Ave SE, Watertown, SD 57201
Sioux Valley Co-op - Cenex
1016 5th St SE, Watertown, SD 57201
Prairie Stop
1007 9th Ave SW, Watertown, SD 57201
Tip Top
46399 US Highway 212, Watertown, SD 57201
Cowboy Country Store
504 9th Ave SE, Watertown, SD 57201
Cowboy Country Store
1400 4th St NE, Watertown, SD 57201
Find E85 Stations Near You
Open E85 Scout to see ethanol percentages, verified badges, and directions for all 8 stations in Watertown.
Open E85 Scout →Frequently Asked Questions
Where can I get E85 in Watertown, SD?
There are 8 E85 stations in Watertown tracked on E85 Scout. Open the app to see station details, community-reported ethanol percentages, and directions.
How many E85 gas stations are in Watertown?
Watertown currently has 8 E85 stations. Use E85 Scout to check which have been recently verified and see ethanol percentages.
← Back to all South Dakota E85 stations
Last generated: 2026-03-06.