Inspire : Public Works Mar Apr 2014
24 Public Works Professional March-April 2014 MICRO-ORGANISMS Bacteria and viruses can cause illnesses such as hepatitis and gastroenteritis. Sources: animal faeces, sewer over ows, organic matter decay. INFOGRAPHIC GROSS POLLUTANTS/ LITTER Unsightly and can be a health risk to animals. Sources: pedestrians, waste collection systems, spills and accidents. HEAVY METALS Poison living organisms and persist in the environment for a long time. Sources: vehicle wear, weathering of buildings and structures, atmospheric deposition. OILS, DETERGENTS AND SHAMPOOS Toxic to sh and other aquatic life. Sources: asphalt, leaks from vehicles, car washing.
Public Works Jan Feb 2014
Public Works May Jun 2014