There are four main types of sewage systems in a house plan:
1. Gravity sewage system: This is the most common type of sewage system. It works by using gravity to move wastewater from the house to the septic tank or municipal sewer system.
2. Pressurized sewage system: In this system, a pump is used to move wastewater from the house to the septic tank or municipal sewer system. This is often used in areas with a high water table or where the septic tank is located uphill from the house.
3. Aerated sewage system: This system uses air to promote the growth of bacteria in the septic tank, which helps to break down the solid waste and neutralize harmful bacteria.
4. Mound sewage system: This system is used in areas with a high water table or poor soil conditions. It involves building a raised mound above the septic tank to allow for better drainage and filtration.
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