APR-18 APR-19 APR-20 APR-21 APR-22 APR-23 APR-24
ELS Zone (1)              
Total Hardness (mg/L as CaCO3) (2) 152 155 159 162 162 161 --
pH (pH) (3) 7.8 7.8 7.8 7.8 7.8 7.8 7.8
Temperature (°C) -- -- -- -- -- -- --
Total Chlorine Residual (mg/L) (4) 1.95 2.01 1.96 1.97 1.97 1.99 2.08
Alkalinity (mg/L as CaCO3) (5) 98 106 110 114 109 109 107
Conductivity (µS/cm) (6) 345 348 356 360 364 359 185
Caustic Soda (mg/L) (7) 7.31 6.93 7.49 7.84 8.38 8.97 11.3