Water Quality Methods And Water Quality Laboratories Public

Water Quality Methods And Water Quality Laboratories

Public Health and Water Microbiology

Providing Safe Water Is The Single Most Effective Tool for Improving Public Health

Contaminated Water as a Health Problem • How many people die from waterborne disease per day globally – – 25, 000 per day (WHO statistic) 9, 000 per year

Contaminated Water as a Health Problem • Pierre Payment - American Journal of Public Health – 35% of vomiting and Diarrhea illness come from drinking contaminated water – 166, 000 hospitalizations, 1000 deaths • In the US the cost is $9. 5 Billion dollars

Water Sources Associated with Outbreaks Spring 5. 9% Wells 70. 6% Well & Surface 11. 8%

Brief History of Waterborne Disease • 350 B. C. Hippocrates recommended filtering and boiling water so as not to poison the palate • 1855 John Snow linked Cholera infection to a community well • 1887 sand filtration equipment manufacturers claimed Cholera and Typhoid fever eliminated by water filtration

Brief History of Waterborne Disease • Until 1920 dysentery from Typhoid fever and Cholera was the leading cause of death in the U. S. • Chlorination of Jersey City water supply in 1908 wiped out Typhoid and Cholera

Bacterial Agents Of Waterborne Disease • Salmonella – typhi (Typhoid fever) – Salmonellosis • • Vibrio cholerae Helicobacter pylori Campylobacter E. coli O 157 /

Parasitic Agents Of Waterborne Disease • Examples – Cryptosporidia – Giardia – Microsporidia – Entamoeba histolytica – Cyclospora – Naegleria fowleri – Toxoplasma gondii

Viral Agents Of Waterborne Disease VIRUS SOURCE SYMPTOMS Caliciviruses (Norwalk) Enteroviruses Hepatitis A/E Feces Rotaviruses Feces gastroenteritis, nausea, vomiting febrile illness, diarrhea fever, malaise, jaundice, nausea vomiting and diarrhea in children Feces