Whether you're building a new septic system or upgrading an existing one, there are Title 5 requirements in Massachusetts that apply to new construction.
Title 5 requirements must be followed in order to prevent damage to the environment and to protect the health of the public. It is always the system owner's responsibility to ensure things are done in accordance with Title 5 regulations. Your local Board of Health can answer any questions you have if you are having a Title 5 system built or expanded. They are the primary regulatory authority for new construction.
For new construction of a system, the first step is to go to your local Board of Health and your local Building Department for permits from both separately.
Before construction may begin, a percolation test and soil evaluation must be performed and a design must be completed and approved by the local Board of Health or other approving authority.
Construction of a typical residential septic system often begins with the installation of a large concrete septic tank a minimum of 10-feet away from the house. The tank is sized to accommodate the amount of wastewater generated daily and often has a 1,500-gallon capacity.
Downstream from the septic tank, a watertight structure known as a distribution box is installed. The distribution box is designed to with distribution lines in the soil absorption system. There are many different types of soil absorption systems such as leaching trenches, perforated pipes set in stone or sand, leaching pits and cement or plastic chambers. The soil absorption system is installed per the approved design.
Once the individual components are installed and connected they must be inspected by the Design Engineer and the Board of Health. After the components are inspected they are carefully backfilled to prevent damage to the new system and the entire disturbed area is graded, covered with loam, and seeded to stabilize the site.