Water Filtration System Repair near Tarkington Ct. I was called to a residential property where the homeowner reported that their water filtration system was leaking from the faucet. Upon inspection, I found that the faucet O-ring was worn and needed to be replaced. I also found that the tubing connection was loose and needed to be tightened. After replacing the O-ring and tightening the connection, I tested the system to ensure that it was no longer leaking. The homeowner was satisfied with my work and relieved to have a reliable water filtration system.