Parameters | Units | Kigata | Kacuro | Kihanga | Kitibya | Kanjobe | WHO limits |
Temperature | ˚C | 21.00 | 21.15 | 20.9.00 | 21.80 | 20.30 | Not specified |
Colour | PtCoU | 9.0 | 2.8 | 6.0 | 8.5 | 7.3 | 15.0 |
Turbidity | NTU | 3.70 | 0.83 | 1.83 | 1.83 | 1.50 | 3.00 |
TDS | mg·L−1 | 141.30 | 74.25 | 71.83 | 44.38 | 53.47 | 1000.00 |
TSS | mg·L−1 | 2.17 | 0.83 | 1.33 | 1.50 | 0.66 | 0.00 |
pH | - | 3.78 | 4.52 | 4.68 | 4.84 | 4.81 | 6.5 - 8.5 |
EC | µS·cm−1 | 281.8 | 158.8 | 147.9 | 93 | 104.8 | 400 |
Manganese | mg·L−1 | 0.11 | 0.002 | 0.096 | 0.034 | 0.034 | 0.4 |
Zinc | mg·L−1 | 0.024 | Nd | 0.009 | 0.186 | 0.023 | 3 |
Lead | mg·L−1 | Nd | Nd | Nd | Nd | Nd | 0.01 |
Iron | mg·L−1 | 0.04 | 0.02 | 0.042 | 0.083 | 0.058 | 1 |
Chromium | mg·L−1 | Nd | Nd | Nd | Nd | Nd | 0.01 |
Cadmium | mg·L−1 | Nd | Nd | Nd | Nd | Nd | 0.003 |
Copper | mg·L−1 | Nd | Nd | Nd | Nd | 0.002 | 2 |
Sodium | mg·L−1 | 25.76 | 17.76 | 16.64 | 4.56 | 5.37 | 200 |
Calcium | mg·L−1 | 16.33 | 12.8 | 18.77 | 15 | 15.2 | 75 |
Magnesium | mg·L−1 | 11.88 | 10.87 | 7.43 | 8.64 | 9.09 | 150 |
Chloride | mg·L−1 | 42.46 | 22.5 | 14.24 | 3.55 | 8.69 | 250 |
Sulphate | mg·L−1 | 55.67 | 9.5 | 33 | 14.67 | 14 | 250 |
TH | mg·L−1 | 89.67 | 76.67 | 73 | 73 | 75.33 | 500 |
TA | mg·L−1 | 5.67 | 14 | 7.67 | 8.67 | 8.67 | 500 |
DO | mg·L−1 | 2.6 | 2.81 | 2.21 | 4.35 | 2.53 | 8 ? 10 |
Phosphate | mg·L−1 | 0.128 | 0.042 | 0.113 | 0.063 | 0.04 | 0.1 |
Nitrate | mg·L−1 | 0.005 | 0.002 | 0.002 | 0.003 | 0.005 | 10 |
Nitrite | mg·L−1 | 0.006 | 0.005 | 0.004 | 0.006 | 0.005 | 3 |
Ammonia | mg·L−1 | 0.042 | 0.028 | 0.04 | 0.033 | 0.033 | 1.5 |
Fluoride | mg·L−1 | 0.295 | 0.52 | 0.61 | 0.26 | 0.295 | 1.5 |
Salmonella | CFU | 2 | 298 | 4 | 64 | 117 | 0 |
Faecal coliforms | CFU | 0 | 33 | 0 | 3 | 190 | 0 |