The following is a compilation of documents that provide specifications, guidelines, and installation standards for various types of Household Sewage Treatment Systems (HSTS). This document contains a combination of information that relates to conventional technology and advanced technology. Therefore, traditional gravity leaching trenches and “advanced” mound installation guidelines appear in the same document, as well as others.

The intent was to provide a document with a broad scope that is able to meet the challenges this developing industry faces. It is hoped that this document will remove some of the “growing pains” associated with taking part in the evolving industry of onsite wastewater treatment.

This manual is the product of a collaboration between the Hamilton County Public Health, the Clermont County General Health District, and the Brown County General Health District.

This manual will be updated on an annual basis. If you have any questions about these materials, please contact the Health District's Water Quality Division at (513) 946-7862.