Photo by Marcus Frazier
Natchez Water Works employee Walter Calvit empties a DPD packet into a small flask of treated water to test its chlorine level. The DPD substance turns pink indicating the presence of chlorine.
Photo by Marcus Frazier
Natchez Water Works employee Walter Calvit empties a DPD packet into a small flask of treated water to test its chlorine level. The DPD substance turns pink indicating the presence of chlorine.