When I was full timing in my fiver years ago I did just this during the President's Day floods of 1992 in Silverado Canyon in So California. I was trapped in a canyon for 5 days and happened to have a spare water pump (12v) and a length of hose and all the fittings. I used a sock as a filter at the end of the hose pulling from the creek, filled up my tanks, showered and did laundry (stack-able Kenmore unit)with it. I did NOT drink it or use it for cooking, though I did use it to wash dishes. It was clear, clean and in the end, sort of fun living semi off the grid, though I did still have electric and septic. Afterwards, I filled and sanitized the tank with bleach, etc. just like one would do after getting water from a well at a remote camp ground. No issues. good luck! :)
Dak