Studies Addressing Septic Density
Higgins Lake area has very high septic density : 71% of Gerrish and 86% of Lyon Townships lot sizes are under 1/2 acre
Central Michigan Department of health addressed septic density
State of Utah Septic Density Executive Summary
State of Utah Septic Density Study (full report)
State of Minnesota Statue
State of Texas Environmental Health Services
State of Texas Environmental Health Services (full report)