Table 4.
Physiochemical parameters of drinking water in Jenin Governorate of the West Bank compared to allowable limits of the PSI standards and the WHO guidelines.
| Physiochemical parameter | Range of measured values | Average ± standard deviation | PSI [73] standard limit | WHO [58] limit | Percentage of samples over MCLa of PSI (%) |
|---|---|---|---|---|---|
| Conductivity (EC) (μS/cm) | 242–1833 | 890 ± 302 | Up to 2000 | Up to 2000 | 0% |
| Salinity (%) | 0.01–0.5 | 0.1 ± 0.07 | NA | NA | NA |
| Total dissolved solids (TDS) (ppm) | 36–1063 | 465 ± 192 | 1000 | 1000 | 2.43% |
| Turbidity (NTU) | 0.10–3.63 | 0.49 ± 0.76 | 5 | 5 | 0% |
| pH | 6.40–8.12 | 7.33 ± 0.37 | 6.5–8.5 | 6.5–8.5 | 0% |
| Total alkalinity (ppm) | 93.11–354 | 164 ± 206 | NA | NA | NA |
MCLa: maximum concentration limit according to the PSI [73]; NTU: nephelometric turbidity units; ∗NA: not available.