Lanarkshire man has slammed Scottish Water as he fears their discoloured tap water has made his 91-year-old mother-in-law ill.Stephen Whyteside, 40, has been plagued with strange-looking water for the past five weeks, with Scottish Water claiming it was safe to drink.However, when he tried to pour a bath this morning, the liquid coming out the taps looked even worse than before.In a picture shared to the Record, the water was shown to be murky brown, and was foaming.The problem is