Mr. Koga is a master plumber who's been in the trade for a lifetime. He definitely knows his stuff and the rapport he's established with many families makes him highly sought after. When you have him on site he doesn't waste time and most of the time is able to pinpoint exactly what is wrong, why its gone wrong, and most importantly, the fix. His prices are very reasonable.
Due to the demand for his skills he may be difficult to get a hold of so plan on doing some follow up calls. From my experience he doesn't work on the weekends so plan on being patient...you'll find it worth the quality of work you'll receive.