The National Park Wastewater Network provides for the collection and treatment of wastewater generated from approximately 526 properties within the National Park community.
The below schematic shows flow through the network:
The wastewater reticulation network is 6.12km long and is entirely gravity fed.
A map of the reticulation network is provided in the link at the bottom of this page.
Wastewater Treatment Plant
Wastewater is transported through the National Park Wastewater Network to the National Park Wastewater Treatment Plant, where it is treated prior to discharge. The National Park Wastewater Treatment Plant (WWTP) was commissioned in 1985.
The National Park Wastewater Treatment Plant provides treatment of wastewater through the following steps:
1. Primary Treatment
2. Secondary Treatment
3. Tertiary Treatment
Wetlands are also thought to help remove pollutants present in wastewater, such as heavy metals (eg, mercury, lead and iron) and nutrients such as Nitrogen and Phosphorus. Scientists are still learning about this and understanding how it works.
The National Park wetland system consists of six small weirs or dams and a plant system which works particularly well.
Discharge of Treated Wastewater to the Environment
The treated wastewater from the Wastewater Treatment Plant is discharged
into an unnamed tributary of the Makaretu Stream.