The water near the city of Longford is known for its natural sweetness, softness and quality. For years, a sign on Highway K-15 boasted of the quality of the water. Longford water is unique because the water is naturally filtered by the distinctive
underground formations in the area. The rocks near Longford form a unique part of the Kiowa Formation and include siltstone,
relative scarce sandstone, minor lignite and abundant clay rocks. These rocks mark the base of the Kiowa Formation in parts of
North Central Kansas and are named for the excellent exposures near Longford, in Southwest Clay County.