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. 2016 Apr 22;5:499. doi: 10.1186/s40064-016-2132-6

Table 1.

Mean value and standard deviation for physicochemical and microbiological parameters, along La Paz River basin water, soil and vegetable sampling points

Site no./samples (N) pH Temperature (°C) Conductivity (μS/cm) Redox potential (mV) Thermotolerant coliform density MPNa,b
Mean SD Mean SD Mean SD Mean SD Mean SD
Water (N = 12)
1 6.84 1.10 9.46 1.64 172.83 97.28 −25.15 38.87 3.73 × 101 9.88 × 101
2 7.93 0.43 12.73 1.87 1303.50 351.07 −82.62 6.62 1.42 × 10 6 1.90 × 106
3 7.81 0.48 18.78 2.50 1216.90 341.74 −76.71 11.23 3.08 × 10 5 1.87 × 105
4 7.64 0.65 ND ND 750.48 253.04 −68.45 16.81 3.05 × 10 5 3.77 × 105
3/soil (N = 12) NA NA NA NA NA NA NA NA 4.61 × 102 7.51 × 102
3/vegetable (N = 12) NA NA NA NA NA NA NA NA 6.85 × 101 1.46 × 102

MPN values shown in italics are above the standard safe water values, for use in recreational and agricultural activities

NA not applicable

ND not determined

aMPN (most probable number of thermotolerant coliforms)/100 ml in water samples

bMPN (most probable number of thermotolerant coliforms)/g in vegetable and soil samples