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Tap water quality used in this study.
| Items | Cold water | Hot water |
|---|---|---|
| DOC (mg/L) | 1.5 ± 0.1 | 1.4 ± 0.1 |
| Turbidity (NTU) | <0.4 | <0.4 |
| pH | 7.1 ± 0.05 | 7.4 ± 0.05 |
| Conductivity (µS/cm) | 180 ± 5 | 180 ± 5 |
| Residual chlorine (mg/L) | <0.3 | <0.1 |
| UV-254 | 0.009 ± 0.001 | 0.010 ± 0.001 |
| DO (mg/L) | 10 ± 2.5 | 10 ± 2.5 |
