Scotland, Stirling, Aerial of Sewage water treatment works.

Aerial view over sewage treatment works.Ecology Entorno Environmental Environnement Green Issues

Slum housing with stilt buildings built over untreated sewage. A child seen sitting at doorway and clothes hanging on a washing line above waterAmerican Children Clean Cleaning Equador Hispanic Kids...

Slum housing with stilt buildings built over untreated sewage. A woman wearing a red cardigan carrying a bucket along walkway with reflections on the water belowAmerican Equador Female Women Girl Lad...

View across machinery in Leeds Water Treatment Plant

Young woman with three children crossing wooden bridge over water polluted with sewage in shanty town. Houses raised on stilts above water behind.Brasil slum favela Brazil

Slum dwellings raised above sewage polluted water with access by wooden bridge.Brasil slum favella Brazil