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Waterborne Diseases

Waterborne Diseases. Water Quality Coliform Counts Lactose + gas Extinction Dilution Most Probable Numbers – MPN EMB agar. Fecal Coliform. Fecal Coliform Membrane Filter E. coli counts Enzyme substrate MUG IBGD 100 ml +/- Test. Wastewater. 100-200 gal/day/person BOD

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Waterborne Diseases

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  1. Waterborne Diseases • Water Quality • Coliform Counts • Lactose + gas • Extinction Dilution • Most Probable Numbers – MPN • EMB agar

  2. Fecal Coliform • Fecal Coliform • Membrane Filter • E. coli counts • Enzyme substrate • MUG • IBGD • 100 ml • +/- Test

  3. Wastewater • 100-200 gal/day/person • BOD • Biochemical Oxygen Demand • Water Quality Measure?

  4. Sewage Treatment • Primary Treatment • Settling Tank • Sludge • Septic Tank

  5. Secondary TreatmentsAerobic • Activated Sludge • Trickling Filters

  6. Anaerobic Treatment • Sludge Digesters • Methane • Vented or Used?

  7. Other Treatments • Biodiscs • Chlorine, Ozone, UV • Tertiary treatment

  8. Drinking Water Purification • Potable Water • Sedimentation Basin • Alum • Coagulation • Sand Filter • Chlorination

  9. Waterborne Diseases • Cholera • Vibrio cholerae • 7 Pandemics • 2 Biotypes • El Tor & Classic O-1

  10. Legionnaires Disease • Philadelphia 1976 • Legionella pneumophilia • Erythromycin • Complex Nutritional requirements • Pontiac Fever

  11. Protozoan Diseases • Giardia lamblia • Cysts • 97% surface water • Cryptosporidium parvum • 1993 Milwaukee • 403,000 cases

  12. Other Waterborne Diseases • Viruses • Polio, Hepatitis • Typhoid Fever • Salmonella typhi • Entamoeba histolytica • Amoebic Dysentery • Shigella dysenteriae

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