Monitoring of heavy metals in selected Water Supply Systems in Poland, in relation to current regulations

Abstract

Abstract.The study presents an analysis of water quality monitoring in terms of the content of heavy metals, which is conducted in three independent water supply systems in Poland. The analysis showed that the monitoring of heavy metals isn't reliable -both the quantity of tested water samples and the location of the monitoring points are the problem. The analysis of changes in water quality from raw water to tap water was possible only for one of the analysed systems and indicate a gradual deterioration of water quality, although still within acceptable limits of legal regulations.

Public health vulnerability due to the exposure of dissolved metal(oid)s in tap water from a mega city (Dhaka, Bangladesh)

“…Moreover, Table 2 also represents the comparison between some existing literature data (Zakir et al, 2020;Saha et al, 2019;Rahman et al, 2013;Bodrud-doza et al, 2020;Kumar et al, 2019;Maw et al, 2020;Abeer et al, 2020;Muhammad et al, 2011;Mohammadi et al, 2019;Qiao et al, 2020;Dong et al, 2020;Nguyen et al, 2020;Le bot et al, 2016;Momot et al, 2005;Szuster-Janiaczyk et al, 2018;Abdeldayem, 2019;Opoku et al, 2020;Egbueri et al, 2020) and the determined heavy metal(oid)s concentrations in the tap water samples of the present study. In comparison to literature data, the mean concentration of Fe, Cr, Pb, Co, Ni, Cd were obtained significantly higher than the tabulated literature data, contrariwise, As concentration in the present study were much lower than the literature data.…”

Metal(loid)s in tap-water from schools in central Bangladesh (Mirpur): Source apportionment, water quality, and health risks appraisals

“…Several studies [ 5 , [22] , [23] , [24] , [25] , [26] , [27] ] were carried out on tap water in different countries like Egypt, France, Iran, Pakistan, Poland, and Bangladesh which demonstrated health-risk due to potentially toxic metal(loid)s in tap-water. But to be very specific, targeting the younger age group people, evaluation of metal(loid)s in tap-water with associated health risks are very scarce.…”

Effect of sedimentation time on the granulometric composition of suspended solids in the backwash water from biological activated carbon filters

“…Reduction of organic compounds concentration in treated water, cause lowering the doses of disinfectants and contributes to the improvement of the quality of treated water (lower concentrations of disinfection byproducts). In addition, as a result of biofiltration, the biological stability of water in the water supply network increases [7][8][9][10][11][12].…”