Water Filtration System Repair Near Chateau Terrace S. I received a call from a homeowner who reported that their water filtration system was producing low water pressure. After inspecting the system, I found that the pre-filter was clogged and needed to be replaced. I also found that the water pressure regulator was not functioning properly and needed to be adjusted. After replacing the pre-filter and adjusting the regulator, I tested the system to ensure that it was producing adequate water pressure. The client was pleased with my work and glad to have a better water supply for their home.