3.2 (NYC Water Story)
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Supplying New York’s Demand The Catskill watershed is ____ miles northwest of NYC
The Catskill watershed is 125 miles northwest of NYC.
Supplying New York’s Demand • The Catskill watershed provides ____ of the city’s water supply. • The other ____ comes from _____.
• The Catskill Watershed provides 90% of the city’s water supply. • The other 10% comes from Croton Watershed.
Regulating Drinking Water The city’s Department of Environmental Protection (DEP) continues testing at sampling stations throughout the city for what 5 things?
– E. coli – Cryptosporidium – Giardia – Lead – PFOA (teflon)
Disinfection & Testing ____, for killing bacteria, and ____, for dental health, are added to the water
• Chlorine, for killing bacteria • Fluoride, for dental health are added to the water
Disinfection & Testing What are 5 things EPA monitors?
• temperature • pH • turbidity (cloudiness) • nutrients • microbial levels
Supplying NYC’s Water ____ (a strong base) is also added to the water to prevent corrosion (gradual deterioration) of pipelines and releasing harmful chemicals like ____
Sodium hydroxide (a strong base) is also added to the water to prevent corrosion (gradual deterioration) of pipelines and releasing harmful chemicals like lead
Supplying NYC’s Water From the aqueducts, ____ city tunnels distribute the water throughout the city pipelines. (The pressure of the water is enough to take it 6 floors up)
From the aqueducts, THREE city tunnels distribute the water throughout the city pipelines (The pressure of the water is enough to take it 6 floors up)
How is water transported from Catskill mountains to city?
Aqueducts! They act like tunnels! They are a method of transporting water from watershed to city!
How many gallons of water gets disinfected and enters the water system?
1 Billion
The Earth is made of ____% freshwater and ____% saltwater
The Earth is made of 2.5 % freshwater and 96.5 % saltwater
Who is responsible for setting these maximum containment levels?
EPA (Environmental Protection Agency)
Who is responsible for testing contaminant levels in NYC?
DEP (Department Environmental Protection)