‘Engineered’ systems come in a variety of types and flavors. The most basic of these systems is the Pressure Dose system. In this configuration, sewage flows from the dwelling into a septic tank. After primary treatment in the tank, the wastewater flows into a dosing chamber that is equipped with a pump, filter screen and float control switches. The wastewater is dosed to the disposal field in discrete doses throughout the day. This pressurization dosing provides better distribution to the entire disposal field and better treatment of the wastewater in the soil. These trenches can be filled with clean drainrock or a chamber-type dispersal unit. In some instances, a capping fill is required. This blanket of soil cover is spread over the disposal field to mitigate shallow native soils and provide protection for the disposal trenches.
Maintenance operations for a pressure dose system consists of regularly pumping the septic tank (we recommend once every 3-4 years) maintaining the electro-mechanical components and caring for the soil cover over the disposal field to prevent surface water (stormwater) from traversing and/or ponding on top of the system. Maintenance is important to prolonging the life of the system and should be done on a regular basis by a certified professional. We offer recommendations for local professionals that can help keep your system in tip-top shape.