What does a Packaged Subsurface Drip Disposal (SDD) system require for approval from the Department?

A Packaged Subsurface Drip Disposal (SDD) system requires a definite set of site criteria for approval from the Department. This is crucial because the effectiveness and safety of an SDD system heavily depend on the specific characteristics of the site where it will be installed. Factors such as soil type, drainage capacity, proximity to groundwater, and overall site layout are evaluated to ensure that the system will function properly and not pose a risk to public health or the environment.

The establishment of clear site criteria ensures that installations are tailored to the unique conditions of a location, promoting optimal waste treatment and minimizing the likelihood of system failure. This is especially important in Tennessee, where geological and climatic variations can significantly impact septic system performance. Thus, having established criteria helps both regulatory bodies and installation professionals adhere to safety standards and environmental regulations.