With reference to the Msunduzi River Sewer Project which is a joint partnership between the Duzi-Umgeni Conservation Trust and the Msunduzi Local Municipality in KwaZulu-Natal, (a) what is the E-coli count of the tests conducted on the river since 1 April 2015, (b) how many incidents of sewerage pollution have been reported over the specified period, (c) what action has been taken against the identified polluters and (d) what remedial action has been taken to deal with the environmental impact of this sewerage pollution in each case?