Checked all toilets with a dye test and found no leaks. Checked all sink for leaks. Found leaks on all four rotary turn drain assemblies in the kitchen where the handle goes into the drain assembly. Here need to be repaired or replaced. Repair would not offer any warranty or guarantee. Found a leak on the standard kitchen sink drain on the right side where the basket strainer meets the sink. This would need to be replaced to stop the leak. 35+ year old Delta kitchen faucet turns hard and I recommend replacing it soon.