Upon arrival, customer informed me that this is an owner tenant situation and that the tenant is currently having issues with her kitchen sink. Tenant told me that the sink was backing up and leaking into the cabinet. After a quick diagnostic, I determine that the the sick waste needed to be re-piped as it was legally done in the first place. Customer had an illegal S-trap because that drain was too far away from the sink drain. I advised customer that I would need to 45 the waist arm closer to the sink drain so that the P-trap will work. Advised customer it had to be a 4 inch clearance so the pipe needed to be rerouted. I also advised customer I was going to eliminate the dishwasher hose because there is no dishwasher in the unit any longer. After rerouting the pipe and installing a new P-trap, I tested to make sure there were no leaks and there were no leaks. Customer very satisfied.