KIM HARRISBERG A river filled with sewage, broken TVs, dead dogs and used needles or a clean, bird-luring oasis lined with indigenous plants? Most people could only see a polluted ribbon of water in Johannesburg's Jukskei but two pioneering women have set out to restore one of the city's largest rivers. Conservationist Romy Stander and artist Hannelie Coetzee want to tackle water pollution using research, green infrastructure and art in a model they hope can be replicated for other rivers across the country. Working closely with the local community, the duo launched an initiative to remove alien invasive plants in…