I had a tenant move out about a month ago. She never complained about water in the bathroom. Today I noticed that the bathroom sink has no water and neither does the toilet, no hot water or cold water. I made sure that valves for the sink and toilet are both open. Hot and cold water in the shower currently work fine. Water in the kitchen is fine as well. What would cause this to happen? A maintenance person did replace the diverter and handle for the shower very recently. Is it possible that he shut off the water to the sink and the toilet somehow when he was working on the shower?