• Ensure all waste, legal and illegal, is trapped and treated to keep the drain clean
• Augment and optimise treatment facilities, where needed, to treat this waste. Appropriate technologies of scale (centralised or local) should be adopted
• Ensure treated effluent is reused and not mixed with untreated effluent before it flows to river
• Biologically treat residual waste in the drain itself. Thereafter, treat all residual sewage at riverfront
• Ensure regular and accurate monitorng of flow and pollution in drains. Monitor pollution at outlet point at river
• Ensure that polluters in the catchment of each drain pay for dirtying the drain.