Homeowners and commercial establishments expend substantial amounts of municipal and well water irrigating lawns and plants. Heavy levels of iron in the water causes rust stains on stucco, vinyl, plastic, fiberglass and concrete surfaces, requiring continual (and costly) maintenance. Our system filters iron from the water before it enters the irrigation system, eliminating the source of the stains. The filtration unit easily attaches to existing irrigation systems and operates without electricity. Our filter system includes economical, easy-to-replace, patented metal-binding filter cartridges.