Septic System Types And Cost

A septic tank, which is an underground chamber constructed of concrete, fiberglass, and plastic, is where domestic wastewater flows to basic sewage treatment. The treatment efficiency of anaerobic and settling processes is moderate. However, they reduce solids and other organics.

Conventional System

A traditional decentralized wastewater treatment system is composed of a septic system and a trench or subsurface wastewater infiltration system. This system is also known as a drainfield. The gravel/stone drainfield design is the most common type of septic system. It is usually installed in a small-sized home or business. The effluent is then piped from the tank to an underground trench of gravel or stone. The trench is then covered with geofabric or another similar material to prevent dirt, sand and other contaminants from entering the stone.

Chamber System

Since over 30 years, gravel drain fields have been used in many states. They have replaced gravel systems. There are many options for them, such as open-bottom chambers and fabric-wrapped pipes. They can also be made from synthetic materials like expanded polystyrene. Recycled materials can be used to make gravelless systems, which offer significant carbon savings.

This system is composed of several connected chambers. The soil is placed around the chambers and in the area above them. The pipes carry the wastewater from the septic tanks to the chambers. The wastewater is able to contact the soil within the chambers. The effluent is treated by microbes living in or near the soil.

Drip Distribution System

The drip distribution system can be used in all types of drainfields. Drip distribution systems have the advantage of not requiring a large mound of soil. Instead, drip laterals are placed in the soil’s top 6-12 inches. Drip distribution systems have a disadvantage in that they require a large dose tank after the tank. This is to allow for the delivery of wastewater to the drip area at the appropriate time. This system requires additional components such as electricity, which can lead to higher maintenance costs and increased expense.

Mound System

Mound systems are designed to treat wastewater in areas that have limited access to multi-stage wastewater treatment. Mound systems can be used in place of traditional rural septic field drain fields. These systems can be used in areas with high water tables, impermeable soils and soils that have a shallow cover over porous rock.

Septic Tank Installation Cost

There are many factors that will impact the cost of your septic system installation. Complex systems will be more expensive than simpler options. Some septic systems need a lot of space in order to work. Your installation costs will rise accordingly. You must also include additional costs for permitting, preparation, and testing if you are installing a new system. When planning a septic tank install, you must consider labor costs as well as the size of your home.

You Should Also Consider Additional Costs

A percolation test costs $250-$1000 depending on the area and soil conditions. You should plan for the costs of soil testing. Although professionals typically only dig a few holes within the leach field area to test, it is possible for your test to cost more if you need to do a survey to determine the best location to excavate.

Septic Tank Size

The number of bedrooms in your house will directly affect the size of your septic tank. Your septic tank size must be large enough to support the number of bedrooms in your home. A 1,000-gallon tank, on average, would be sufficient to cover a three-bedroom house. It would cost approximately $1,500. A 500-gallon tank is sufficient to cover a single-bedroom home, which reduces the cost of the tank to $800.

Labor costs

Your project must include labor costs. A plumber or another specialist would typically be hired to replace or install a septic tank. The cost of labor can vary depending on how complex the project is. It could be anywhere from $1,500 to $4,000.

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