Water quality monitoring is an important exercise, which helps in evaluating the nature and extent of pollution control required, and effectiveness of pollution control measures already in existence. It also helps in drawing the water quality trends and prioritising pollution control efforts. To ensure that the water quality is being maintained or restored at desired level. The water quality monitoring is performed with following objectives:

• To assess physcio-chemical and biological nature of water from various sources like surface water (rivers, streams, lakes, etc.), wells and taps water.

• To assess the fitness of water for drinking and other purposes

• Prioritize geographic areas, basins, and aquifers in which water resources and aquatic ecosystems are most vulnerable to contamination and where improved treatment or management can have the greatest benefits