drinking water envi

available water to drink on earth

0.024%

what replenishes our drinking water

hydrological cycle

ground (saline)

0.7%

surface (saline)

12%

surface (fresh)

61.6%

ground (fresh)

25.6%

NYC drinking water

surface water

Boston drinking water

surface water

Binghamton drinking water

rockbottom dam (surface water)

vestal / bing univ drinking water

Six wells... 100 to 200 feet deep... all located along the southern bank of the Susquehanna River

water treatment C

Add chemicals to make big particles

water treatment F

Gentle mixing to form bigger particles, & Filters to removed
dissolved solids, germs, odors, etc.

S water treatment

Big particles settle and are removed

D water treatment

Chlorine or other chemicals kills remaining parasites. Might also use UV light or ozone.

The first municipal chlorination system

1908

risks of groundwater pumping

As water is pumped faster than recharged.. saltwater intrusion

Why are some places with high precipitation still facing water shortages?

thermoelectric power, irrigation, public supply, rural domestic & livestock

Where is most water used in homes? How have people reduced water usage?

outside: landscaping, pools, leaks. -Decline of water intensive industries. Residential & commercial conservation standards

privatization

-Efficiency -Expertise -Investment to pipes

Govt owned

-Rate control -Access -Oversight -Justice... rates go up, poor
people get cutoff -Resource management

Who funds water improvements?

-Local government / utility – 90 percent
-State government – four percent
-Federal government – six percent