Journal of Environmental and Public Health / 2020 / Article / Tab 4

Research Article

Domestic Groundwater Quality in the Northern Governorates of the West Bank, Palestine

Table 4

Distribution of the tested groundwater samples for total Coliforms according to their level of contamination and recommended treatment procedure.

Recommended treatment procedure [20]Range of total Coliforms (CFU/100 mL)Degree of contaminationPercentage of samples (%)

No treatment required0–3098.7
Chlorination only4–5011.3
Flocculation, sedimentation, and then chlorination51–50,00020
Very high contamination, need special treatment>50,00030

CFU: colony forming unit.

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