Brian House collected polluted water with acid mine drainage in the Tshimologong Precinct, Johannesburg and translated pollution levels to sound:
Acid Love comprises vessels of AMD gathered from a mine on the outskirts of the city. These are connected in an electrical circuit that measures the conductivity from the metals of the water and coverts it into sound. The sound is further modulated by data gathered from remediation efforts at the mine. The installation itself also performs a remediation process—over time the metals will precipitate to the bottom of the vessels, and both the sound and the color of the water will change as it is purified.
[via @blprnt]