My kitchen sink was leaking where two drain sections weren't properly secured together. I called up WaterWorks, got an appointment for the next day, Michael (the owner) showed up promptly as scheduled, and he redid the entire under-sink drain piping so that not only was it not leaking but the sinks drained much better than before and the piping was better done. That was several weeks ago and I've been enjoying a trouble-free kitchen sink ever since. The whole experience was very pleasant; Michael explained what he proposed to do and why (and what it would cost), and then afterwards pointed out what was what under the sink, he thoroughly tested his work before leaving, and he left the whole place neat, with no cleanup work for me to do.