Before installing your septic tank, the Sewerage Services Department (SSD) for your local area must be consulted to determine the appropriate form of sewage treatment for your property or proposed development area. All septic tank systems need local authority approval first. This must be submitted for approval after a professional engineer endorses:

• Tomher Septic Tank Engineering Design Calculations
• Tomher Septic Tank Installation Drawings
• Installation site plan

We can recommend competent professional engineers if you need any.

Before installing your septic tank, the Sewerage Services Department (SSD) for your local area must be consulted to determine the appropriate form of sewage treatment for your property or proposed development area. All septic tank systems need local authority approval first. This must be submitted for approval after a professional engineer endorses:

• Tomher Septic Tank Engineering Design Calculations
• Tomher Septic Tank Installation Drawings
• Installation site plan

We can recommend competent professional engineers if you need any.

There should be no smell from your septic tanks under normal operating conditions, proper usage and maintenance. If your sewer system develops a smell, this is an indication of misuse, and you should have your system inspected, especially if the following occurs:

• Water is draining away slowly
• Drain pipes are making noise and produce air bubbles
• Sewage smells are coming from house drains
• Water is backing up into the house drains

These problems should be reported immediately to your maintenance company, contractor or individual responsible for the standard maintenance of your sewerage system, as they are indications that the sewerage system is being misused.

A concrete septic tank is “cast in-situ” which means the whole tank is manufactured on site. Concrete septic tanks have 2 chambers consisting of the primary settlement chamber and the filtration chamber. The filtration chamber works on downflow filtration using gravity to carry the partially settled effluent downwards through the filter bed (normally stone aggregate). This media is difficult (and heavy) to replace or clean, when it is saturated with biological growth.

Tomher septic tanks are prefabricated tanks and work on the principle of primary settlement and upflow filtration. The settled solid material remains at the bottom of the tank, and by displacement due to incoming material, the remaining liquid is then carried upwards into the filter chamber for anaerobic digestion through the filter chamber.

The filter chamber contains a unique proprietary technology called Bio-Balls which filter solids in the effluent and promote the growth of bacteria for digestion of organic material. These Bio-Balls are essentially maintenance free and easy to clean or replace.

Tomher septic tanks are designed for the treatment of organic waste from domestic, commercial and industrial premises. Inorganic materials such as paint, thinners, bleaches or other inorganic materials should not enter the tank as these will reduce or kill the bacterial growth in the Tomher septic tank.

Large quantities of food waste should not be introduced to the tank unless accounted for in the design calculations. This additional organic waste may cause problems in your sewerage system, and will reduce the interval for desludging and scum removal of the tank. Grease, oil, plastic materials, disposable sanitary products and other solid waste material should not be allowed to enter the Tomher septic tank. These materials may cause problems in your sewerage system such as blockages, excess scum levels and/or other problems relating to the correct operation of your septic tank.