The plant is being refurbished and expanded from 5.5 to 11 million litres a day.
The province reported 50% progress. The project is intended to reduce spills into the Sabie River.
What happens next
The project milestone comes from an official provincial record. Programme announcements, design, procurement, construction, commissioning and handover are separate stages, and the status reported here reflects the position stated by the issuing authority.
Built Report will update this Mpumalanga record when the responsible authority publishes a later award, progress certificate or completion notice. Contract values and dates are not inferred where the source does not provide them.
What we will track next
The next useful update should connect physical progress to service performance. For Lydenburg wastewater works expansion reaches halfway, that means identifying which assets are commissioned, who operates them, whether water-quality or effluent tests are current and how reliability is measured after handover. Published percentages are easier to assess when the reporting date, design capacity, actual flow and outstanding work appear together.
Readers should also look for power resilience, maintenance funding, trained operators and a defects process. Pipes, pumps, reservoirs and treatment units form one chain; completion of one component does not prove that the full service is working.
Sources
- Mpumalanga State of the Province Address 2026 — Mpumalanga Provincial Government



