A study on the
seasonal dynamics of groundwater quality along the coastal belt of Visakhapatnam
city
Budha Ravi Prasad, Kakarla Jagadeeswara Rao, Namuduri Srinivas and Kolli Suresh
Kumar
Res. J. Chem. Environ.; Vol. 30(1); 31-44;
doi: https://doi.org/10.25303/301rjce031044; (2026)
Abstract
Seasonal changes in groundwater quality bordering Visakhapatnam's coastal stretch
in Andhra Pradesh, India have been studied. In line with drinking water specifications
as per IS 10500 : 2012, samples of groundwater were collected from 15 identified
locations before and after the monsoon seasons and tested for important chemical
and physical parameters. To understand the differences in time and location, statistical
measures such as minimum (Min), maximum (Max), mean (Avg), standard deviation (SD)
and coefficient of variation (CV) were developed. To examine the water's potable
condition and possibility for corrosive activity, indices like the Langelier Saturation
Index (LSI), the Revelle Index (RI) 1941 and the Water Quality Index (WQI), as prescribed
by Brown et al8, were derived. The findings reveal that seasonal variations are
considerably influenced by recharge due to monsoon, with samples collected after
monsoon usually exhibiting better water quality.
Some sites, on the other hand, exceeded the maximum allowable levels for specific
characteristics, stressing the need for continuous management and supervision. These
results are in line with previous studies that demonstrate the significant influence
of changes across seasons on the groundwater quality along the coast.
