Why Test for Sewage Contamination?Exposure to sewage contamination increases the risk of contracting diseases of the digestive system and other related illnesses. Potential disease causing organisms in sewage contamination include E. coli (some strains), Salmonella, and Shigella. Sewage contamination can come from flooding events, failing septic systems, wastewater treatment plants, sewer overflows, vessel sewer discharge, runoff from surfaces, livestock, pets, wildlife, and humans. The following bacteria are used as indicators of sewage contamination. - E. coli
- Total coliforms
- Fecal coliforms
- Enterococci
- Fecal Streptococcus.
These bacteria are not a health threat themselves but their presence is used as an indication of other potentially harmful bacteria. |
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