Coliform testing is routinely used as an indicator of sewage contamination. Sewage contamination is a concern because it may contain potentially infectious organisms such as such as Escherichia coli, Salmonella, and Shigella. Exposure to sewage contamination increases the risk of gastrointestinal infections and other related illnesses. Sources of sewage contamination may include raw sewage overflows, severe flooding and leaking sewer lines or septic tanks. To determine the potential health … [Read more...]