One of the main reasons why the Prelos effluent sewer is able to utilise small diameter pipes is because we are able to eliminate stormwater or groundwater infiltration from occurring. The tanks are made under strict quality control and using specifically designed equipment to ensure no over land water gets into the tank.
By eliminating unwanted water into the system, we not only use small diameter pipes, but we save on power as less pumping is required, we save on central treatment plant size because we are treating a lower flow, and we save on land area for irrigation.
To ensure that the entire system remains free of unwanted stormwater or groundwater infiltration we recommend the tank is installed to ensure no water can get into the tanks either through the tank lids or air vents and that no stormwater downpipes are connected into the gully traps of the dwelling.