Hi,
>
> Has anyone ever had water accumulate in the passenger foot-well of their
>Focus after a good rain storm? I had a good 1+ inches of water there after a
>heavy storm. No other water was seen: anywhere on the driver's side, inside
>of doors, dashboard, etc.
>
> Given that the dashboard, doors and seats were dry, I'm guessing that water
>either came in from the right front wheel well or even more likely, from the
>air intake for the heat/AC system due to a plugged drain.
>
> Before I get really involved in finding the source and fixing it, I look to
>you for advice. If the problem is a plugged drain in the air intake causing
>water to enter into the heating/AC ducts, why would the water--and I mean
>LOTS of water--only appear on the floor of the passenger's side of the car
>with an absolutely dry driver's side carpeting?
>
> It's a 2001 4-dr USA ZTS. The storm that put over an inch of water in part
>of the car was a good 2" all-day rain, rare at this time of year for
>Flagstaff AZ. The car sat during most of the storm but I drove home 27 miles
>while it was still raining. I don't know if the water got into the car as it
>sat or only after driving home. I first noticed it when I arrived at home but
>am guessing that it was there before I drove home.
>
> Thanks.
If you search this group via Google you'll find that this subject has been covered more than once. The water is coming in via the pollen filter, which is just underneath the windscreen on the passenger side. The filter needs re-sealing. A well-known fault. Happens here in the UK too :-( Had breakfast in Flagstaff 12 years ago on our way from Phoenix to the Grand Canyon - wonderful holiday. Hope your problem is soon sorted.