Overview
Moana wastewater treatment plant serves a small community of 72 people on New Zealand's West Coast. It provides secondary treatment and discharges approximately 16.91 megaliters of treated wastewater annually.
The Moana wastewater treatment plant is located in the small settlement of Moana on the West Coast of New Zealand's South Island. Serving a population of 72, this facility is part of the region's municipal wastewater infrastructure, managed by the Grey District Council. The plant provides secondary treatment, which is the standard biological treatment process required under New Zealand's Resource Management Act (RMA) for discharges to inland waters. Secondary treatment typically involves biological oxidation and sedimentation to reduce organic matter and suspended solids. The plant treats an annual wastewater volume of approximately 16.91 megaliters. Treated effluent from the plant is discharged into the local environment, likely into a nearby stream or river that flows into Lake Brunner, a large glacial lake known for its trout fishing and recreational value. The lake drains via the Arnold River into the Grey River, which reaches the Tasman Sea near Greymouth. Protecting this waterway is important for local aquatic ecosystems and tourism.
Environmental context
The plant discharges into a catchment that feeds Lake Brunner, a significant glacial lake on the West Coast. Lake Brunner is a popular destination for trout fishing and supports diverse aquatic life. The lake drains through the Arnold River into the Grey River, which flows to the Tasman Sea. The region's high rainfall and forested catchments make water quality management important for maintaining the ecological health of these waterways.
Frequently asked questions
The Moana wastewater treatment plant is located in the small settlement of Moana on the West Coast of New Zealand's South Island, within the Grey District.
The Moana wastewater treatment plant serves a small community of approximately 72 people.
The Moana WWTP provides secondary treatment, which typically involves biological processes to break down organic matter and sedimentation to remove solids before discharge.
The plant's discharge enters a catchment that flows into Lake Brunner, a significant glacial lake, and then via the Arnold and Grey Rivers to the Tasman Sea. Protecting these waters supports local trout fisheries and ecosystem health.
The Moana WWTP operates under New Zealand's Resource Management Act (RMA), which requires discharges to meet water quality standards to protect the environment. For small communities, secondary treatment is typical to minimize impacts on receiving waters.
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