Waterborne Diseases

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

• Trickling Filters

• Activated Sludge

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