TDS can be found in the same high level up to 2001. Many problematic elements can be found in the surface water in higher concentrations than in ground water, especially Chlorite, Sodium, Arsenic, Bore and Chromium. Trace elements and heavy metals can be proved in groundwater, partly in high concentrations above the WHO limits for drinking water. Also reference to ionic change effects in some ground water samples can be proved. 30% of groundwater samples exceed the WHO limits with more than one element.
