I finally used my Mr Funnel water separating funnel today for the first time. I filled up my brand new jerry can with non ethanol 90 octane gas and transported it home where it sat in my shed for about a week to 10 days. Today I used this new gas can in conjunction with the funnel to fill my lawn mower. When I finished I saw that there was a bit of sediment and water in the bottom of the funnel's sump. Is it common for gas to have water and sediment in it like this? Also, this station I used has a fairly high turnover since it offers non ethanol and there was not a tanker actively pumping the tanks while I was filling up. What do you guys think?
Photo of what I'm talking about:

Photo of what I'm talking about:
