TABLE 2.
Location | Season | Chlorine concn (mg/liter)a |
||||
---|---|---|---|---|---|---|
Effluent | Storage | DS1b | DS2b | DS3b | ||
California | Winter | 2.5 A | 0.15 E | 0.13 E | 0.09 E | 0.02 E |
Spring | 1.43 C | 0.05 E | 0.04 E | 0.03 E | 0.06 E | |
Summer | 1.78 B | 0.14 E | 0.11 E | 0.11 E | 0.14 E | |
Fall | 0.75 D | 0.03 E | 0.02 E | 0.01 E | 0.01 E | |
Florida | Winter | 1.64 I | 0.09 J | 0.03 K | <0.01 K | <0.01 K |
Spring | 4.33 G | 0.08 J | 0.65 J | 0.20 J | 0.10 J | |
Summer | 2.68 H | 0.10 J | 0.10 J | 0.13 J | 0.07 J | |
Fall | 5.06 F | 0.20 J | 0.15 J | 0.14 J | 0.03 J | |
Massachusetts | Winter | <0.01 Q | 0.14 Oc | <0.01 Q | <0.01 Q | <0.01 Q |
Spring | <0.01 Q | 0.23 Nc | 0.10 P | 0.10 P | <0.01 Q | |
Summer | <0.01 Q | 0.33 Lc | <0.01 Q | <0.01 Q | <0.01 Q | |
Fall | <0.01 Q | 0.28 Mc | <0.01 Q | <0.01 Q | <0.01 Q |
For each location numbers followed by the same letter in each row and numbers followed by the same letter in each column are not significantly different (P > 0.05). The mean concentrations are based on data for four replicates, and each replicate consisted of samples obtained on four consecutive days. Chlorination is not used at the New York site.
DS1, DS2, and DS3 are locations in the distribution system; DS1 is closest to the storage site, and DS3 is farthest from the storage site.
At the Massachusetts site, chorine is added at the storage site instead of to the effluent.