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Cenex - Sioux Valley Coop Highway 212
E85 · Convenience store · 1601 9th Ave SE, Watertown, SD 57201
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
6am-10pm daily
As listed in the station locator. The E85 pump can have different hours from the store.
Paying
American Express, Cash, Discover, Mastercard, Visa, Voyager, WEX
Getting there
Highway 12
Last confirmed: Aug 11, 2026
Source: US Department of Energy, Alternative Fuels Data Center station locator, station 32925. See the AFDC record. Downloaded Oct 29, 2026.