Johannesburg
currently experiences approximately 3500 sewer blockages monthly throughout the
10, 000km of sewer network that it operates and maintains.
The
cause of these blockages vary from tree roots in the older established areas,
sand infiltration in the lower income areas and general abuse of the network
due to improper usage. The sewer overflows resulting from the blockages
inevitably result in pollution to the environment and as Johannesburg Water is
dedicated to the reduction of environmental pollution a preventative
maintenance sewer cleaning program has been implemented.
