How serious is the risk of contamination when a water pipeline is damaged during sewer repair work, and what must Johannesburg Water do to ensure the supply is safe before reconnecting residents? 

 

How serious is the risk of contamination when a water pipeline is damaged during sewer repair work, and what must Johannesburg Water do to ensure the supply is safe before reconnecting residents? 

Guest: Mike Muller - Visiting Professor at the Wits School of Governance and a professional engineer - (was DG of Water Affairs a long time ago)