Building A-(Chlorine Dioxide) | |||||||
Months | Total chlorine (mean ± SD mg/l) | Temperature (mean ± SD ˚C) | Mean pH ± SD | Iron Ions (Mean ± SD µG/L) | Zinc Ions (Mean ± SD µG/L) | Manganese Ions (Mean ± SD µG/L) | THMs (Mean ± SD µG/L) |
April 2016 | 0 | 41.5 ± 2.1 | 6.5 ± 0.01 | NP | NP | NP | NP |
May 2016 | 0 | 41.5 ± 2 | 6.5 ± 0.01 | NP | NP | NP | NP |
June 2016 | 0.3 ± 0.04 | 50.6 ± 1.9 | 6.5 ± 0.01 | 8.9 ± 4.9 | 54.7 ± 10.3 | 1.5 ± 0.3 | 2.1 ± 0.2 |
July 2016 | 0.26 ± 0.05 | 49.9 ± 2.3 | 7 ± 0.03 | NP | NP | NP | NP |
August 2016 | 0.34 ± 0.11 | 50.6 ± 2.4 | 6.5 ± 0.02 | NP | NP | NP | NP |
September 2016 | 0.37 ± 0.10 | 50.7 ± 2 | 6.5 ± 0.02 | NP | NP | NP | NP |
October 2016 | 0.42 ± 0.08 | 50.6 ± 2,3 | 6.5 ± 0.02 | NP | NP | NP | NP |
November 2016 | 0.30 ± 0.06 | 43.8 ± 3,1 | 6.4 ± 0.03 | NP | NP | NP | NP |
December 2016 | 0.32 ± 0.05 | 48.8 ± 4,7 | 6.7 ± 0.04 | 22.2 ± 5.2 | 86.2 ± 9.5 | 1.5 ± 0.4 | 9.7 ± 2 |
January 2017 | 0.31 ± 0.06 | 50.1 ± 3.5 | 6.7 ± 0.02 | 22.8 ± 7.4 | 85.7 ± 9.3 | 1.7 ± 0.3 | 13.2 ± 3.4 |
May 2017 | 0.36 ± 0.09 | 50.9 ± .2.9 | 6.8 ± 0.03 | 22.9 ± 7.5 | 88.6 ± 9.8 | 1.9 ± 0.5 | 13.8 ± 5.1 |
September 2017 | 0.41 ± 0.06 | 52.4 ± 3.2 | 6.5 ± 0.01 | 22.4 ± 8.8 | 86.1 ± 9.2 | 1.7 ± 0.5 | 13.8 ± 5 |
January 2018 | 0.38 ± 0.08 | 53 ± 3.2 | 6.5 ± 0.03 | 23.4 ± 8.3 | 86.1 ± 9.2 | 1.7 ± 0.5 | 14.8 ± 5.2 |
May 2018 | 0.39 ± 0.05 | 52.2 ± 2.8 | 6.4 ± 0.01 | 24.7 ± 8.5 | 93 ± 11.8 | 1.7 ± 0.1 | 14.8 ± 4.7 |