Factors to Consider in Septic Tank Design

Septic tank systems are increasingly popular in residential homes as they’re the next best alternative to public sewer systems. A septic tank effluent field design in NZ’s environment ensures the tank works optimally in disposing of wastewater. If you’re looking to install a new septic system, work with a provider who knows the installation process well. Below, we discuss some key factors to consider when installing a septic system on your property to ensure it works properly.


Septic system type

There are many types of septic systems⁠—conventional, pump chamber, mound, and cluster. These designs vary in gravity, pressure, and aerobic system function. The right septic design is crucial to ensure its ability to absorb and dispose of water. Therefore, a reputable service provider should determine which option suits your property best.


Size of the septic tank

Size is another vital factor when picking the right septic system design for your home. The size will cover the dimensions of the drain field. It should equate to your daily water usage and be large enough to account for future water use. If your home has many occupants, you will need a large tank that can handle high volumes of wastewater.



Contractors will assess the terrain as it determines how the system will handle runoff water and flooding when heavy rain occurs. Ideally, the terrain should be flat to avoid damage from runoff. Flat surfaces help systems to function optimally and dispose of treated water in the surrounding environment.


Local code and rules

A septic system installation is a big undertaking that requires compliance with your local laws and rules. The last thing you want is a wastewater treatment system that needs additional work due to non-compliance. Check your regional council’s website to ensure that your septic tank meets all local council requirements. Alternatively, you can hire an experienced consultant. These consultants have experience working with local council rules and regulations.



Professionals must consider the surrounding landscape when installing a new septic system. Experienced professionals will know to avoid laying the system near trees as the roots may damage the sewer lines.


Ease of access

When designing a septic system for your home, your provider should make the septic tank, drain field, and sewer lines accessible for repairs and maintenance. When a part of the system malfunctions, service providers must be able to carry out repair work without hassle.


Schedule routine maintenance with Streamline

The right septic tank design for your home is imperative. To ensure optimum performance, you must regularly clean your septic tank. We recommend hiring professionals to minimise disruption and potential health risks to you and your family.


At Streamline, we specialise in septic tank maintenance and repair. Our experienced team use the latest equipment to provide quality septic tank service. We offer fast response times and environmentally friendly solutions. Learn more about how we can keep your septic systems in tip-top shape. Book our service online or contact us today.