The pre-filter is the initial stage of our filtration process, designed to remove larger impurities such as sand, silt, and other large particles from the water. The pre-filter is constructed from chrome-plated brass and features a stainless steel mesh that is cleaned daily by an automated function using a stainless steel brush. This self-cleaning mechanism ensures that the pre-filter is virtually indestructible and never needs replacement, only periodic cleaning. This patented system protects and extends the lifespan of the subsequent filters, ensuring high performance and low maintenance.