My wife’s 2003 1.4 TDI has recently developed a water leak in the drivers footwell. The car is not used a great deal having only done 91000 miles in 20 years, so tends to stand a lot. The carpet is wet but with no sign of water ingress. The water is clear, so not screenwash or cooling system. No cooling system leaks and the heater works fine. We have not driven through any floods. Have checked pipe from wiper arm to engine bay. I frequently clear the leaves out. Noticed it because of condensation on windscreen. I have run water around the screen, which is a possible suspect of course. Would be pleased with any suggestions and whether this is a common fault. Many thanks in advance