TABLE 3.
Summary of the results of total chlorine residual measurements in chlorine- and chloramine-treated hot- and cold-water samples
| Disinfectant parametera | Total chlorine residual concn (mg/liter) |
|
|---|---|---|
| Chlorine | Chloramine | |
| All samples | ||
| Range | 0–3.2 | 0–8 |
| Median | 0.2 | 1.2 |
| Avg | 0.5 | 1.6 |
| Cold-water line | ||
| Range | 0–3.3 | 0.07–8.0 |
| Median | 0.6 | 1.5 |
| Avg | 0.7 | 2.0 |
| Hot-water line | ||
| Range | 0–2.3 | 0–5.2 |
| Median | 0.1 | 2 |
| Avg | 0.2 | 1.3 |
a
Detection, chlorine, all samples, 83%; cold-water line, 96%; hot-water line, 71%. Chloramine, all samples, 91%; cold-water line, 94%; hot-water line, 88%.