Trouble shooting suggestions-Thetford Toilet/water pump

There's a small screen in the cut-off valve supplying water to the toilet that tends to plug up with calcium from hard water. The same thing happens with the aerators/screens on the faucets. In the toilet shutoff valve those build ups usually prevent the valve from closing all the way so you get some leakage of water into the bowl. You just need to remove and clean or replace the shutoff valve.