Abstract
Water quality is a significant criterion in matching water demand and supply. Securing adequate
freshwater quality for both human and ecological needs is thus an important aspect of integrated
environmental management and sustainable development. To represent water quality in a lucid way
different water quality indices for water quality assessment are used which aim at giving a single value to
the water quality of a source reducing great amount of parameters into a simpler expression and enabling
easy interpretation of monitoring data. In this review, various water quality indices (WQI) used for
assessing surface water quality are discussed. As different National and International Agencies involved in
water quality assessment and pollution control defines water quality criteria for different uses of water
considering different indicator parameters, so there are numerous WQI specific to any region or area. An
attempt to cover different water quality indices developed worldwide, their background and application
area has been discussed here.
Users
Please
log in to take part in the discussion (add own reviews or comments).