CapeTalk's Africa Melane speaks to water advisor for GAIA Infrastructure Partners, Les Lange about the possible damage to the City's water infrastructure resulting from the drought especially when Day Zero finally hits.
Lange says the sewage system could be blocked if there is no enough water to flush out all the dirt in it.
Cape Town is now expected to run out of water on 12 April, which was previously forecast at 21 April 2018.
The waste water flowing from households flows through the sewage system down the gravity pipes and it is pumped up into the waste water treatment works. When the water through those pipes is reduced significantly, you tend not to flush properly all the solids in the system.— Les Lange, Water advisor for GAIA Infrastructure Partners
That will cause blockages in your sewage system - you will have water popping out of the main holes here and there and that needs to be quickly maintained.— Les Lange, Water advisor for GAIA Infrastructure Partners
The problem with waste water treatment is that it was designed for have a constant flow and if you do water shedding in certain areas, the water will fluctuate.— Les Lange, Water advisor for GAIA Infrastructure Partners
To hear more of the Day Zero conversations,listen below: