What type of filter might be included in a water softener for well water?

A sediment filter is commonly included in a water softener system for well water because it effectively removes physical particles such as sand, silt, dirt, and rust that may be present in well water. This type of filter is crucial as it helps to prevent these particulates from entering the water softening system, potentially causing clogs or damage to the equipment.

Well water often contains varying levels of sediment due to the natural processes that can affect groundwater, such as rainfall or nearby construction. By utilizing a sediment filter, the water softener can operate more efficiently, ensuring that the resin beads within the system do not become fouled with debris, which would diminish their ability to soften water by exchanging hardness-causing minerals like calcium and magnesium.

Though UV filters, activated charcoal filters, and chemical filters serve important functions in water purification—such as disinfection, removing odors or flavors, and addressing specific contaminants—they do not serve the primary function of filtering out physical particulates that a sediment filter is designed for. Thus, for well water applications specifically, a sediment filter is the most relevant choice when integrated with a water softener system.