I received a water bill that showed 2 1/2 times normal consumption. I traced the problem to a leaky toilet which I fixed and a constant drain flow from my RO. I spent about a week on Youtube trying to figure out how to fix the RO leak. The system I have did not have readily available assistance or help. Completely frustrated, I did a search for RO help in York Region and came upon Watermart in Thornhill which is close to me. I called them (frankly expecting them to say they can't help) and spoke with Dave. I described the problem and Dave assured me it was common and they could help. Given my water bill problem, Dave arranged to have someone come over straightaway. Within an hour, Ken arrived. He did a thorough check and confirmed it was a faulty shut-off valve. Ken also then carefully explained my options. Because the system was older, parts/filters not readily available and expensive and the tubing looking unsanitized, while they could replace the part, it was expensive, so he recommended we replace the system. I braced for the cost and was pleasantly surprised by it. Not only was it reasonable, the parts and filters were readily available and he said Watermart would also schedule annual service/filter replacement. For an extremely busy family (with a forgetful Dad who is not much of a DIY guy), that is gold. That was a Friday. On Monday, Ken was back when he said he would be and the system was installed and running within an hour or so. Ken removed the old system and took it for disposal so the work area was clean and professionally done. Ken showed the way he secured all of the tubing and the tank, the installation of an extra shut off, etc. It really showed how professional his work was and how shoddy the work was with the original system. Once installed, Ken carefully walked me through the system and answered all of my questions, including explaining some additional products for consideration without pushing me to 'buy'. All in all, I had a extremely good experience with Watermart. Thank you to Dave and Ken.