Let it separate/settle, and filter it and your probably good to go.
Check and drain your filter cans often(daily pre-trip).
I recently filled up with a mix of "stuff" that was unknown to me. I filtered it but I didn't put it in my bulk storage tank(to let water and any other heavies settle), I put it directly into my trucks tank and ran on it.
Each day since, I drain my primary and it has been "straight water", every time! I mean I get about 1 pint of clear water with each draining, I wait for the "fuel" then close it. It's amazing to see what looks like good clean drinking water come out, then it turns into black oil!
I'll definitely be cleaning my fuel system before winter(freezing) time, this year. I actually like to drain and clean my fuel tanks, every year, before winter. I set it on a trash can and use a garden hose to rinse it completely clean. I let it dry in the sun. Then I reinstall it clean as a whistle! Fresh clean diesel for the winter for me.,