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Home / South Dakota / Watertown / Sioux Valley Co-op - Cenex

Sioux Valley Co-op - Cenex

E85 · Co-op · 220 10th St NW, Watertown, SD 57201

DirectionsCall (605) 886-5829

Flex-fuel vehicles only. E85 is not approved for gasoline-only cars. How to check yours. Pumps can change or be out of service, so call ahead if you can.

Hours

24 hours daily

As listed in the station locator. The E85 pump can have different hours from the store.

Fuel

E85: Yes

Blender pump: Not listed

Other ethanol blends: None listed

Which blends can my car use?

Paying

American Express, Cash, Checks, Credit cards, Discover, Debit, Mastercard, Visa, Voyager, WEX

Getting there

On Highway 20 at 3rd Street NW

Last confirmed: Aug 11, 2026

Source: US Department of Energy, Alternative Fuels Data Center station locator, station 1447. See the AFDC record. Downloaded Oct 29, 2026.

Report a change to this station

Other E85 stations nearby

All E85 stations in Watertown