TABLE 1.

Quality characteristics of treated water at the treatment plants of supply A and supply Ba

ParameterTW-A valueTW-B value
MeanMinimumMaximumMeanMinimumMaximum
Temp (°C)10.09.511.511.510.013.5
pH7.87.28.27.67.48.1
O2 concn (mg liter−1)6.45.67.85.93.98.3
HCO3 concn (mg liter−1)9892124282273308
Cl concn (mg liter−1)131114282731
Ca concn (mg liter−1)35.432.939.632.725.752.8
Mg concn (mg liter−1)2.372.072.739.728.3610.9
Total hardness (mmol liter−1)0.980.91.091.221.041.68
Fe concn (μg liter−1)<20<20<2025<2073
Mn concn (μg liter−1)<10<10<10<10<10<10
SO4 concn (mg liter−1)161319<10<10<10
NH4 concn (mg liter−1)<0.05<0.05<0.05<0.05<0.05<0.05
NPOC concn (mg C liter−1)0.33<0.30.497.97.68.3
  • a Mean, minimum, and maximum values, based on routine monitoring over a period of 1 year.