Every review about Vitaliy and Master Drain is true. He responded quickly, had someone over right away and kept me informed throughout the process. I had corroded clay basement P pipe that was causing water to come up through the basement main drain. It had to be replaced so I also did the back water valve addition. Walter was knowledgeable and professional. They completed all the paperwork for me for the city rebate. I HIGHLY recommend and if I ever need plumbing Services will use again. Great peace of mind with this company!