Water in Engine Twice

[Koalakruiser]

At 3000km, my 2007 Freelander 2 Diesel had water as well as scrap metal in the EGR. A new EGR was installed. At 65000km, 4.5 years later, but well short of the 100000km warranty period, the engine blew according to Land Rover service because of water in the engine. I had only driven in the city and never through water other than rainwater lying on the street, no flood situation. When the engine suddenly stopped, it was a beautiful dry day. Now I need a total engine replacement because LR say that warranty is over due to time. Can the two instances be related? How can water get into the engine of a rough terrain 4WD? Thanks.