10.13 Table 10.14 shows the characteristics of two water resources A and B. In your opinion, which source is likely to be groundwater and which is surface water? Give your reasons. ble 10.14 Water analysis of two water samples for Problem 10.13 Constituent Unit Water A Water B Turbidity NTU 15 4 Coliforms #/100 mL 20 2 Hardness mg/L as CaCO3 140 225 Calcium mg/L as CaCO3 90 170 Sodium mg/L as Na 30 80 Bicarbonate mg/L as CaCO3 116 175 Chloride mg/L 23 123 Sulfate mg/L 48 79 Nitrate mg/L as N 0.4 0.6 Iron mg/L 0.3 0.2 Silica mg/L as SiO2 20 10 | Assume that you are an American engineer working on a water engineering project in Mexico. Find page 17