Private Onsite Wastewater Treatment Systems (POWTS), more commonly referred to as septic systems, are used primarily in rural areas of the country where waste water treatment is not available. These systems fall into two general categories:


  1. Gravity fed/conventional and
  2. Alternative (pump) systems including aerobic treatment units (ATUs.) Alternative systems usually include electric pumps.


This is a project recommended for a professional with experience in the field due to the potential risk to the environment by pollution of the watershed.  For this purpose, you can call professionals at for septic tank installation Bethany.



Meanwhile, you can learn the basic steps of installing a septic tank, just in case you want to see if they’re installing it in the right way.


Design Preparation


The system then can be designed based on the findings of the survey and results of the soil test. After this, the appropriate permits and approvals can be applied for.


  • Site survey findings that influence the design include things like; available space, topography, intended purpose and perceived water use based on the size of the dwelling/building the system will service.
  • Location of the well and/or neighboring wells.
  • Soil test findings that influence the design include things like; Soil type and layering (sand, clay, rock, and where it is located relative to depth), and the ability of the soil to drain and filter wastewater.


Submit your design for review and approval




For Gravity-Fed System


  1. Assemble all the tools and equipment needed for excavation
  2. Find where you want to go into the building relative to where you want to place the septic tank. Excavate to at least 2 feet deep and drill a hole through the wall, or go deeper and go under the footing, whichever is desired, or necessary. Plan for the flow to go downhill from here, as this is exactly what a gravity fed system is all about. It does not use a mechanical means other than gravity to discharge the waste from the tank to the drain field.
  3. Excavate a hole large enough to set the concrete aerobic tank below ground.
  4. Place (in most jurisdictions) “inch-and-a-half washed drain rock” from a nearby gravel pit around the pipe.
  5. Cover up the pipe and tank once you have a green tag from the health inspector.


For Alternative Septic System


  1. Install a pump chamber after the septic tank. The pump chamber contains the electric pump which is utilized to move the effluent from place to place, and eventually into the drain field for final disposal.
  2. The construction details including the layout of all sewers outside of the home, the location and depth of all tanks, the routing and depth of pressurized effluent lines and other system parts such as the drain field and any additional ATUs must match the septic system plans as approved by the local county health department.
  3. Cover the septic tank Bethany as well as pressurized lines once the inspector has given his final approval and the system is activated.