| dc.description | Ground water seems to be pure and free from suspended material in comparison to
surface water, yet many compound and/or ions in varying amounts may be present in
dissolved and/or ionic forms. If low quality water is used for drinking, domestic and
beneficial uses, ionic toxicity as well as health hazards may occur. Sometimes, those
substances are found at an objectionable level in groundwater and considered as
contaminated. When these waters are used in drinking and industrial purposes, they
deteriorate the quality of the products. In some cases, ionic toxicity may occur and
respective products become unsuitable for beneficial uses. In Northwest Bangladesh,
The pH of ground and surface water ranged from 6.81 to 7.8 within acceptable limit
for drinking purposes (Roy et al. 2012) | en_US |
| dc.description.abstract | A study was carried out to evaluate the groundwater of 50 samples of Dinajpur
Sadar. The water samples were chemically analyzed and classified on the basis
of their comparative suitability for drinking, industrial and irrigation purposes.
Analyses were included as pH, EC, TDS (total dissolved solids) cations (Ca,
Mg, Na, K, Cu, Mn and Fe), anions (HCO3, NO3, SO4, PO4 and Cl) and also
computed like SAR to evaluate the suitability of groundwater supply for
specific use. Some correlations and compositional relations were also
performed. Water samples were slightly acidic (pH varied from (6.30 to 6.98)
and might be suitable for drinking, industrial and irrigation uses. On the basis of
SAR and EC, all samples were graded as low and medium salinity (C1 and C2)
and low alkali hazards (SI) class, combinedly expressed as C1S1 and C2S1.
According to TDS and SAR values, all samples were classed as ‘freshwater’
and ‘excellent’ categories. All samples were ‘excellent’ categories based on
SSP for irrigation. As regards to hardness, samples were found in ‘moderately
hard’ and ‘soft’. Based on the contents Fe, SO4, NO3 and Cl, groundwater and
surface water samples of the study area were within the ‘safe’ limit for drinking.
Most of the major ionic constituents were detected below the acceptable level
for drinking. Based on micronutrients like Mn, Cu and Cl were within the safe
limit for drinking and industrial uses. In comparison with the national and
international standards, the water sources of the study area (Sadar Upazila,
Dinajpur) were within the safe limit and recommended for drinking and
industrial uses. | en_US |
