Percolation testing by Bureau of Public Health standards are available for the 28 sites characterized in Centre County. The four soils under discussion are well drained and have rates of more than 2.5 centimeters per hour (1 inch per hour). However, Leck Kill soils generally have a limiting factor of depth to bedrock, Hagerstown soils have a possible contamination of ground water through caves and sinkholes, and Laidig soils have a fragipan, coarse fragments, and steep slopes that often limit their use as septic tank effluent drainage fields. Also, Laidig soils have a percolation rate of less than 2.5 centimeters per hour in most places.

10/15/98