Lifetime Costs: The typical total cost for a new septic system over a 20 year period is $6,300 to $13,000 for trenches and mounds, or $13,500 to $32,000 for alternative treatment systems. For multi-household systems, typical trench or mound systems range from $18,500 to $25,000.
What genetic diseases are common among Amish and Mennonites? Amish and Mennonites exhibit certain rare diseases uncommon in other populations. These include Ellis-van Creveld syndrome (a type of dwarfism), glutaric aciduria, Crigler-Najjar syndrome, and maple syrup urine disease.
Genetic Drift and the Founder Effect. Polydactyly -- extra fingers or sometimes toes -- is one symptom of Ellis-van Creveld syndrome. Genetically inherited diseases like Ellis-van Creveld are more concentrated among the Amish because they marry within their own community, which prevents new genetic variation from entering the population.