Cenex - Sioux Valley Coop Highway 212
E85E30
1601 9th Ave SE, Watertown, SD 57201
No community ethanol test yet
Directions →
There are 8 E85 stations in Watertown, South Dakota. Blends on offer here: E85, E30, E20 and E15. 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
Cowboy Country Store
E85E30E20
1400 4th St NE, Watertown, SD 57201
No community ethanol test yet
Directions →
Cowboy Country Store
E85E30E20
504 9th Ave SE, Watertown, SD 57201
No community ethanol test yet
Directions →
Prairie Stop
E85E30E15
1007 9th Ave SW, Watertown, SD 57201
No community ethanol test yet
Directions →
Sioux Valley Co-op - Cenex
E85E30
1016 5th St SE, Watertown, SD 57201
No community ethanol test yet
Directions →
Sioux Valley Co-op - Cenex
E85E30
220 10th St NW, Watertown, SD 57201
No community ethanol test yet
Directions →
Stone's Truck Stop
E85E30E15
3801 9th Ave SE, Watertown, SD 57201
No community ethanol test yet
Directions →
Tip Top
E85E30E20
46399 US Highway 212, Watertown, SD 57201
No community ethanol test yet
Directions →
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 →E85 near Watertown
Frequently Asked Questions
Where can I get E85 in Watertown, SD?
There are 8 E85 stations in Watertown, SD tracked on E85 Scout. Open E85 Scout 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 see which ones have been recently verified by the community and check ethanol percentages before you fill up.
← Back to all South Dakota E85 stations
Data sourced from NREL and the E85 Scout community. Station data last changed: 2026-10-01.