SEP-10 SEP-11 SEP-12 SEP-13 SEP-14 SEP-15 SEP-16
ELS Zone (1)              
Total Hardness (mg/L as CaCO3) (2) 154 160 161 166 164 181 164
pH (pH) (3) 7.8 7.7 7.8 7.9 7.9 7.8 7.8
Temperature (°C) -- -- -- -- -- -- --
Total Chlorine Residual (mg/L) (4) 2.07 2.15 2.16 2.13 2.12 2.09 2.12
Alkalinity (mg/L as CaCO3) (5) 109 107 107 110 115 120 119
Conductivity (µS/cm) (6) 260 361 363 374 385 410 379
Caustic Soda (mg/L) (7) 3.05 2.61 4.38 4.87 5.30 6.55 5.04