Parameters

Method used

PH

4500-H B AWWA/APHA, 1998 PH meter

EC

2510-B AWWA/APHA, 1998 EC meter

TDS

2540-C AWWA/APHA, 1998 gravimetric method

Ca, Na and K

3111-B AWWA/APHA, 1998 flame photometry

Mg

3111-B AWWA/APHA, 1998 flame atomic absorption spectrometry

HCO₃, CO₃, Cl and SO₄

4500-E AWWA/APHA, 1998 spectrophotometer