Hi, my mum refuses to drink tap water as she’s convinced theres sand in it. We’ve had the water company and a plumber tell us so there is no sand in the water but she still refuses to drink it. Of course she can drink bottled water, that’s not a problem however for a whole week, she’s not been drinking water and has been quite dehydrated. She’s been seen by the doctor, my issue is how do I convince her that the water is safe to drink? I’ve showed her evidence- we’ve had professionals explain to her and nothing is changing. She refuses to wash, wash up or drink the water. It’s the first time she’s done this what do I do?