an important component of a society's infrastructure and provides services vital to the function of an industrialized society.

• Plumbing

  System

• Sanitary

  System

• Plumbing and

  Sanitary Supply

• Water Supply

  System

Water that collects on the ground or in a stream, river, lake, reservoir, or ocean.

• Ground

  Water

• Surface

  Water

• Rain

  Water

• Fresh

  Water

_______ water, which is obtained by drilling wells, is water located below the ground surface in pores and spaces in the rock

• Surface

  Water

• Fresh

  Water

• Ground

  Water

• Rain

  Water

_____ % of water is consumed for domestic purposes. Water is used for drinking, bathing, cooking food and washing dishes, clothes, fruits, vegetables and brushing teeth.

• 10%

• 12%

• 15%

• 8%

______ is the largest consumer of water.

About 70% of water is used here.

• Manufacturing

• Household

• Agriculture

• Industrial

Water molecules exist in liquid form over an important range of temperature from 0-99 degree Celsius.    

• TRUE

• FALSE

Water has a lower surface tension.

• TRUE

• FALSE

water is considered a biological solvent for its ability to dissolve a wide range of substance since it is polar molecule.

• TRUE

• FALSE

The use of chemical reagents to destabilize and increase the size of the particles; mixing; flog size growth; physical separation of the solids from the liquid phase Sedimentation (decantation), flotation, or filtering are commonly used to achieve this separation.

• Sedimentation

• Filtration

• Coagulation

• Disinfection

the process by which particles suspended in water settle out

of the suspension due to gravity.

• Gravitation

• Suspension

• Sedimentation

• Flocculation