Water Filtration System Repair Services Near Sweet Home Rd. A homeowner reported low water pressure from their water filtration system. After inspection, I found that the pre-filter was clogged and needed replacement. Additionally, the water pressure regulator was not working correctly and required adjustment. After replacing the pre-filter and adjusting the regulator, I tested the system for adequate water pressure. The client was pleased with my work and relieved to have a better water supply at home.