Heritage Cases

The Moyeni Water Treatment Works currently receives water from the existing abstraction point at the adjacent canal and is able to treat 4ML of water per day. Treated water is pumped from the WTW to a reservoir (existing capacity 500Kl) about 3km away and distributed to the community. Given the increase in demand for treated water, the WTW requires upgrades to the plant and rising main pipeline. The proposed upgrade (Phase 1) will allow for the treatment of 10ML/day. Additional water will be pumped from existing abstaction point at the adjacent canal. The bulk rising main route is planned to follow the existing road but may be revised to avoid houses built very close to the road. Thus, a 20m buffer has been mapped along the proposed pipeline route to provide a 40m corridor, if re-routing is required. The pipeline will be High Density Polyethylene (HDPE) with a diameter of 650mm and flow rate 780m3/hr. The following components form part of the proposed Phase 1 upgrades: • Pump station upgraded at the Moyeni River canal abstraction point; • Installation of a new pipe from the abstraction point to the WTW (likely 115m); • Installation of a new rising main that will involve: • 3 500m of 650mm diameter HDPE pipe with a flow rate of 780 m3 per hr; • Road crossings; • Air, scour and isolating valves; • Pressure reducing valve chamber; • Pipe jacking under road; • Pipe jacking under existing canal; • Pipe route markers and thrust blocks. The intention is to then increase the WTW capacity to allow for the treatment of 20ML/day during a second expansion in the future (Phase 2). Water will likely be sourced from the Woodstock Dam during this phase.