I jacked the near side up to get the wheel to drop, lift flap disconnect the water sensor wire, unscrew the filter. Once out unscrew water trap from the bottom of the filter fit to new filter using new o ring and replace filter hand tight, pump the fuel primer to check it is airtight, if hard after 10 pumps all is well if not tighten the filter some more and repeat. Reconnect sensor wire, drop car back down and start up.
Can be done from underneath but required engine shields to be removed.