Conductance and TDS
All the samples analyzed had conductance well within the prescribed limit of 2 mO by
USEPA. The conductance is reflective of dissolved mineral solids (Trivedi & Goel 1986).
Concentrations of TDS from natural sources have been found to vary from less than 30 mg/l
to as much as 6000 mg/l (Trivedi & Goel 1986). The presence of dissolved solids in
water does affect its taste. As per the ISI (Indian Standard Specification for Drinking
Water 1983) rating about palatability of drinking water, in relation to its TDS, water may be
considered as: