3.2 (NYC Water Story)

Question 1

Supplying New York’s Demand

The Catskill watershed is ____ miles
northwest of NYC

Answer 1

The Catskill watershed is 125 miles
northwest of NYC.

Question 2

Supplying New York’s Demand

• The Catskill watershed provides ____ of the city’s water supply.
• The other ____ comes from _____.

Answer 2

• The Catskill Watershed provides 90% of the city’s water supply.
• The other 10% comes from Croton Watershed.

Question 3

Regulating Drinking Water

The city’s Department of Environmental Protection (DEP) continues testing at sampling stations throughout the city for what 5 things?

Answer 3

– E. coli
– Cryptosporidium
– Giardia
– Lead
– PFOA (teflon)

Question 4

Disinfection & Testing

____, for killing bacteria, and ____, for dental health, are added to the water

Answer 4

• Chlorine, for killing bacteria
• Fluoride, for dental health are added to the water

Question 5

Disinfection & Testing

What are 5 things EPA monitors?

Answer 5

• temperature
• pH
• turbidity (cloudiness)
• nutrients
• microbial levels

Question 6

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 ____

Answer 6

Sodium hydroxide (a strong base) is also added
to the water to prevent corrosion (gradual deterioration) of pipelines and releasing harmful chemicals like lead

Question 7

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)

Answer 7

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)

Question 8

How is water transported from Catskill mountains to city?

Answer 8

Aqueducts!

They act like tunnels! They are a method of transporting water from watershed to city!

Question 9

How many gallons of water gets disinfected and enters the water system?

Answer 9

1 Billion

Question 10

The Earth is made of ____% freshwater and ____%
saltwater

Answer 10

The Earth is made of 2.5 % freshwater and 96.5 %
saltwater

Question 11

Who is responsible for setting these maximum containment levels?

Answer 11

EPA (Environmental Protection Agency)

Question 12

Who is responsible for testing contaminant levels in NYC?

Answer 12

DEP (Department Environmental Protection)