Septic Tank to Soakaway Connection: The Ultimate Solution to Clogged Drains and Overflowing Toilets

Are you considering a septic tank system for your off-grid property or home? Understanding the connections and functionality of a septic system is crucial. One common question that arises is whether it’s feasible to connect a septic tank to a soakaway. This blog post will delve into the details, exploring the technicalities, benefits, and limitations of such a connection.

What is a Septic Tank and Soakaway?

Septic Tank

A septic tank is an underground chamber designed to treat wastewater from homes, businesses, or other properties not connected to a municipal sewer system. It’s typically made of concrete, fiberglass, or plastic and is divided into two compartments. In the first compartment, solids settle at the bottom, forming sludge, while fats and oils float to the top, forming a scum layer. The second compartment allows clarified liquid to flow out of the tank through an outlet pipe.

Soakaway

A soakaway is a pit or trench filled with porous material, such as gravel or crushed stone. It’s used to disperse wastewater into the surrounding soil, allowing it to percolate and be absorbed. Soakaways are typically used in areas with suitable soil conditions that allow for proper drainage.

Can Septic Tank Be Connected to Soakaway?

Yes, a septic tank can be connected to a soakaway. The septic tank treats the wastewater, removing solids and reducing contaminants. The treated effluent is then discharged into the soakaway, where it’s further filtered and dispersed into the soil.

Benefits of Connecting Septic Tank to Soakaway

Efficient Wastewater Disposal

Connecting a septic tank to a soakaway provides an efficient way to dispose of wastewater. The septic tank removes solids and contaminants, while the soakaway allows the treated effluent to percolate into the soil, reducing the risk of environmental contamination.

Reduced Maintenance Costs

Soakaways require minimal maintenance compared to other wastewater disposal systems. They do not need to be pumped out regularly, and the porous material can last for several years before needing replacement.

Soil Filtration

Soakaways allow wastewater to be filtered through the soil, which helps to remove additional contaminants and impurities. This natural filtration process further enhances the treatment of wastewater before it reaches groundwater.

Limitations of Connecting Septic Tank to Soakaway

Soil Conditions

Soakaways are only suitable for areas with well-drained soil that allows for proper percolation. If the soil is too clay-like or has a high water table, a soakaway may not be an effective solution.

Effluent Quality

The effluent discharged from a septic tank into a soakaway should meet certain quality standards to prevent contamination of groundwater. Regular inspection and maintenance of the septic tank are crucial to ensure the effluent meets these standards.

Site Restrictions

Soakaways require sufficient space and a suitable location away from buildings, property boundaries, and water sources. Local regulations may also impose restrictions on the installation of soakaways.

Design Considerations for Connecting Septic Tank to Soakaway

Size of Soakaway

The size of the soakaway depends on the volume of wastewater generated by the property and the soil conditions. A larger soakaway is required for higher wastewater volumes or poorly drained soil.

Depth of Soakaway

The depth of the soakaway should be sufficient to allow for proper percolation and filtration of the wastewater. The depth may vary depending on the soil conditions and local regulations.

Porous Material

The soakaway should be filled with a porous material, such as gravel or crushed stone, that allows for efficient drainage and filtration of the wastewater.

Connection to Septic Tank

The septic tank and soakaway should be connected using a suitable pipe and fittings. The connection should be made at the outlet of the septic tank and should allow for easy access for inspection and maintenance.

Alternative Wastewater Disposal Options

If connecting a septic tank to a soakaway is not feasible due to soil conditions or other factors, alternative wastewater disposal options may be considered:

Leach Field

A leach field is an underground network of perforated pipes that distribute wastewater into the soil. Leach fields are suitable for areas with good soil drainage.

Sand Filter

A sand filter is a bed of sand that filters wastewater as it passes through. Sand filters are effective in removing impurities and contaminants.

Evapotranspiration System

An evapotranspiration system uses plants and soil to absorb and evaporate wastewater. Evapotranspiration systems are suitable for areas with warm climates and well-drained soil.

Key Points: Weighing the Options

Connecting a septic tank to a soakaway can be an effective wastewater disposal solution in areas with suitable soil conditions. However, it’s important to consider the benefits and limitations of this connection, as well as alternative options, to determine the most appropriate solution for your property.

Questions We Hear a Lot

Q: What are the main benefits of connecting a septic tank to a soakaway?
A: Efficient wastewater disposal, reduced maintenance costs, and soil filtration.

Q: What are the limitations of connecting a septic tank to a soakaway?
A: Soil conditions, effluent quality, and site restrictions.

Q: What are the alternative wastewater disposal options if a soakaway is not feasible?
A: Leach field, sand filter, and evapotranspiration system.

Q: How often should a septic tank be inspected and maintained?
A: Typically every 3-5 years.

Q: What are the signs of a failing septic tank?
A: Slow drains, foul odors, and sewage backup.