Dear Kgabo, I couldn't ...

Dear Kgabo,

I couldn't agree with James Meyer more. The long-term solution of you problem starts by identifying the pollution sources of the river catchment area, and systematically addressing them. Prioritizing is important. In the river catchment area, start by identifying the main entry points of contamination. It's possible that most pollution comes from diffuse sources, but with a "bit of luck" you some important centralized pollution entry points. Focus on those. Technical solutions are available for almost all contamination sources, in all shapes and sizes. But it's very important to know the loads per source, that is quantity and quality per contamination parameter. There is no technical solution that fits it all, but depending on the location, budget and goals, there are always solutions available. The more you know, the easier it will be to find the best solution. Good luck!