The Environment Protection Authority (EPA) has issued new Sewage Pumping Station Environmental Guidelines 2019 under the State Policy on Water Quality Management 1997, replacing the previous 1999 Guidelines.
The updated Guidelines apply to existing and new Sewage Pumping Stations (SPSs), whether these occur in sewerage systems designed for sewage only, or combined sewerage systems that transport and treat stormwater and sewage.
SPSs, which are common and necessary components of the sewerage reticulation network, have higher potential for causing environmental harm compared with most other parts of the reticulation network because they are often designed to be emergency relief points.
Key environmental impacts associated with SPSs are overflows of raw sewage, and nuisance odour and noise.
The Environmental Guidelines aim to minimise risks to the environment and public health due to the design and operation of SPSs.
They provide information on the statutory framework and approvals requirements for in Tasmania, set performance objectives for sewage overflows based on an assessment of the sensitivity of the spill location, and provide default recommendations for minimum overflow control measures. They also provide guidance for management of odour and noise emissions.
The Guidelines are intended to inform wastewater managers, operators, civil engineers and other designers of the environmental requirements and standards for pump station performance in Tasmania.
TasWater and Councils are considered the main users of the updated Guidelines.