Ground water supply

Big reserve of Ground water in the World: 0,6 % of total world fresh water compares with surface water only 0,02%Ground water has a small content of solid and organic matter, microorganism (coliforms and e coli) that more safely than surface water (river, lake, lagoon, rain).

GROUND WATER SUPPLY

Positive characteristics of Ground water supply

• Big reserve of Ground water in the World: 0,6 % of total world fresh water compares with surface water only 0,02%

• Ground water has a small content of solid and organic matter, microorganism (coliforms and e coli) that more safely than

surface water (river, lake, lagoon, rain)

• Output of ground water less depend on climate conditions in local area And that time, reserve of surface water strongly

depend on rain and dry seasons

• Ground water distributes more largely than surface water,

people can get under ground water every where

• Processing treatment of ground water easy and cheaper than treatment of surface water

Negative characteristics of Ground water supply

• Sometime, ground water has high pollutant content: As, Fe,

CaCO3, salinity; it’s necessary to set up treatment processing ground water before utilize

• Ground Water has a big reserve, but safely output of ground water exploit not large, because residence time of GW about

100 years to 10,000 years

• Exploitation of Ground water from sediment aquifer lays can

be create subsidence

→ That difficult to build a big waterworks for city water supply

Ground water supply

Schema drinking water supply plant

Schema city drinking water supply

Ground water supply