Service for running toilets 01/07/22 Arrived to home to find that the seal for the flush valve canister on the two of the customers toilets were no longer working properly. I moved forward with this work and replaced them. One of the toilets shut off valves were ceased shut from corrosion so went to go replace it. When I found the shut off to the apartment I found the gate valve to be in poor condition which was also corroded from hard water. I did not want to touch it because it could leak if forced shut. Adjacent to it was the shut off for the water heater which was in the same condition. There was even a tiny bit of water seeping out the top of the nut the valve bolt was connected to. I told the customer that this can be hazardous and it is in her best interest to have all of these replaced. I also mentioned that I needed to access the wall where he valves were located and cut it open and said I don’t know what we are going to find behind there and we’ll have to see once we