Effluent sewer
Effluent sewers also currently serve fewer people than septic systems, which also use septic tanks, but simply dispose of the effluent by draining it into a leach field. About one quarter of United States homes dispose of their wastewater with septic tanks. However, effluent sewers are being looked at as a sewage treatment solution in areas where gravity sewer systems are not well-suited or when the high capital cost to build a gravity system is prohibitive. Areas that are less than ideal for gravity systems include areas that are large, but extremely flat and areas that require long-distance pumping, such as where homes are widely spread out or when several small villages or towns connect their sewage systems so that a centralized plant can be built.
WWII RAN Fuel Installation, Edge Hill
The first two tanks were built on the former railway reserve on the north side of Collins Avenue. This land had been leased privately prior to the war and two small buildings were demolished to make way for Tank 2, which lay on the former railway alignment. Tank 1 was constructed on the site of the former Edge Hill railway station. Because these tanks were intended to hold dieseline they were constructed in plate steel, sourced from Broken Hill Pty Ltd. There were significant delays during construction, with correspondence between Queensland Main Roads, Allied Works Council and the Australian Navy revealing the frustration of all concerned in a project that was considered vital to the Allied war effort. Confusion as to where the steel tanks were to be sited, a lack of graders and poor planning hindered construction. Adjacent to tanks 1 and 2 a small pump house was constructed and an underground fuel pipeline was laid from the pump house along the former Cairns-Herberton railway embankment and under the streets of North Cairns to Trinity Wharf.