Name to common pathogens in polluted water.

Name some common water pollutants.

Name two common types of pollutants of air.

Give the source of pathogens in the water.

Name five common water pollutants.

The most common indicator organism of polluted water is :

Give the source of pathogens into water .

Name the source of pathogen in water.

Give the sources of pathogen into water.

Define water pollution and name the common water pollutants.

Name two diseases caused by (a) Infectious agents in polluted water, (b) Toxic chemicals in polluted water.