Basic Properties of Drinking Water
o Clarity
o Smell
o Taste
o Temperature
o Risk to human health
History of Water Planning and threats to Public Health
o Roman Aqueduct system
o 1675 discovery of microorganisms
o 1817 cholera spread along trade route
o Cholera and its relationship to water
Laboratory exercise with microscopes
o Find and try to identify microorganisms with a microscope
o Known pathogens in our water
o Try to find known pathogens in source water
o fresh runoff
o Hudson River
o wetland swamp
Because pathogens are difficult to find, we take precautions and treat our water.
BREAK – Snack and restroom break
Measure the quality of water?
o We look at Turbidity, pH, TSS, TVS, NOM, coliform, chemicals, etc.
o In SLS we will only look at Turdity and pH, along with our microscope
Change the quality of water
o Sedimentation
o Filtration
o Disinfection
Use various portable filters to treat three source waters and calculate removal efficiency
o fresh runoff
o Hudson River
o wetland swamp
Measure turbidity and pH before AND after treatment using a turbidimeter and pH meter
Associate Professor