A critical appraisal of the status and hydrogeochemical characteristics
of freshwater springs in Kashmir Valley
Abstract
With growing water scarcity, jeopardized by climate change, and
population growth, springs are likely to play an important role in
meeting the domestic water demand in future. In the Kashmir valley,
springs play an important role in meeting drinking water demand via both
an organized and unorganized supply chain. This paper examines the water
quality of Kashmir Valley springs during the last 11 years in relation
to their geographical location, regional hydrogeological conditions,
anthropogenic activities and climate change. We analyzed data for 258
springs using Geographic Information System (GIS) and Water Quality
Index (WQI) techniques from the whole Kashmir Valley. WQI ranged from 23
(excellent water) to 537 (water unsuitable for drinking). The WQI
indicated that 39.5% of the springs had excellent waters, 47.7% had
good water, 5% had poor water, 1.6% had very poor water, and 6.2% of
the samples had water unsuitable for drinking purposes. Coliform
bacteria in some of the sampled springs provided evidence of organic
(mainly human) pollution of shallow aquifers. Principal component
analysis (PCA) yielded four principal components explaining a cumulative
variance of 31%, 49%, 59%, and 67% respectively. The chemical
relationships in Piper diagram identified Ca–Mg–HCO3
as the most predominant water type, whereas a Gibbs diagrams revealed
that the spring water of the study region was mainly controlled by rock
weathering dominance. Our findings therefore suggest that springs have
the potential to offer viable solution to the rising demand and
therefore merit an attention for their protection and management.