Hydrochemical investigations of coastal aquifers and saltwater intrusion in severely affected areas of Satkhira and Bagerhat districts, Bangladesh

Ahmed, Mohammad Tofayal; Monir, Minhaj Uddin; Aziz, Azrina Abd; Hasan, Yeasir; Khan, Mohammad Forrukh Hossain; Islam, K.M.R.; Hasan, Mehedi; Biswas, Biplob Kumar; Woobaidullah, Abu Sale; Samad, Abdus; Ahmed, Fee Faysal; Rifat, Shamiul Islam; Noman, Abdullah Al; Faruque, Jamal

doi:10.1007/s12517-022-09955-x

Cited by 9 publications

(1 citation statement)

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“…Discovery and monitoring of groundwater salinization are based on the evaluation of the aquifer's hydrogeochemical behavior (Sangadi et al, 2022;Ahmed et al, 2022;Gueddari et al, 2022). The ionic composition and hydrochemical faces are usually evaluated by diagrams of Piper (1944) and Stiff (1951) and by ionic ratios (Custodio and Llamas, 1983;Hem, 1985).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hydrogeochemistry and Gis-Based Evolution of Groundwater Quality and Salinity in the Shallow Aquifer of São José Do Norte, Southern Brazil

Sabino,

Menezes

2023

Rev. AIDIS ing. cienc. ambient.

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Water salinization changes hydrogeochemistry, affects the quality and quantity of groundwater available for human consumption and its mitigation is time-consuming. A large brackish lagoon and the Atlantic Ocean surround the aquifer of the São José do Norte town (Brazil). Population and economic growth demand more groundwater for domestic and agricultural purposes, stressing the aquifer. Despise the aquifer’s social-economic status, potential impacts on the groundwater have not yet been substantially investigated. The aims of this study were to analyze the hydrogeochemistry of the São José do Norte aquifer, focusing on the search for salinization indicators, and to assess the groundwater suitability for human drinking and irrigation purpose. Ionic ratios, Piper and USSL diagrams were applied, such as new methods, as Seawater Intrusion Groundwater Quality Index (GQISWI) and the Groundwater Quality Index for human consumption (GWQIHC). The results showed that the groundwater is mostly calcium bicarbonate type and did not indicated salinization occurrence. The interior and the northern area had the highest ionic content and the lowest water quality values. Most of the samples contained at least one parameter above the maximum allowed concentration for drinking purpose according to water quality standards. High concentration of alkalinity, iron and hardness reduced the groundwater suitability for human consumption, requiring water treatment before ingestion.

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