Why does your water filter turn brown?

A water filter may turn brown due to the accumulation of iron, sediment, or organic matter in the water supply. When these contaminants pass through the filter, they can oxidize and cause discoloration. Additionally, if the filter is nearing the end of its lifespan or has not been replaced regularly, it may struggle to effectively trap these particles, leading to a brownish hue. Regular maintenance and timely replacement of filters can help prevent this issue.