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Food and Nutrition
Concentrations (µg/L) of disinfection by-products (DBP) in drinking water from Kemptville College and Ottawa for Total Diet Study in 2000
| DBP | Britannia treatment plant, Ottawa | Kemptville College | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| R | T | D1 | D2 | D3 | S1 | S2 | S3 | S4 | S5 | |
| Monochloroacetic acid | <0.1 | 0.5 | 0.5 | 0.6 | 0.9 | na | <0.1 | na | na | na |
| Dichloroacetic acid | 0.1 | 11.0 | 11.2 | 11.7 | 13.9 | na | 0.2 | na | na | na |
| Trichloroacetic acid | 0.1 | 9.0 | 8.8 | 9.5 | 9.2 | na | <0.1 | na | na | na |
| Monobromoacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | <0.1 | na | na | na |
| Dibromoacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | 2.6 | na | na | na |
| Bromochloroacetic acid | <0.1 | 0.5 | 0.5 | 1.0 | 1.1 | na | <0.1 | na | na | na |
| Bromodichloroacetic acid | <0.1 | 0.3 | 0.5 | 0.6 | <0.1 | na | <0.1 | na | na | na |
| Chlorodibromoacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | <0.1 | na | na | na |
| Chloroform | <0.1 | 29.8 | 35.6 | 40.7 | 40.9 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Bromodichloromethane | <0.1 | 3.1 | 3.3 | 3.5 | 3.6 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
| Chlorodibromomethane | <0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 |
| Bromoform | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 5.0 | 5.0 | 5.0 | 5.0 | 5.1 |
| Total Trihalomethanes | <0.1 | 33.0 | 39.1 | 44.4 | 44.6 | 10.9 | 11.0 | 11.0 | 10.9 | 11.1 |
| Trichloroacetonitrile | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Dichloroacetonitrile | <0.1 | 1.1 | 1.3 | 1.2 | 1.2 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Bromochloroacetonitrile | <0.1 | <0.1 | <0.1 | 0.0 | 0.0 | 1.0 | 1.1 | 1.1 | 1.1 | 1.1 |
| Dibromoacetonitrile | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 1.3 | 1.4 | 1.4 | 1.4 | 1.5 |
| 1,1-Dichloro-2-propanone | <0.1 | 1.1 | 1.2 | 1.4 | 1.4 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 |
| 1,1,1-Trichloro-2-propanone | <0.1 | 2.6 | 2.6 | 1.0 | 0.8 | <0.1 | <0.1 | 0.1 | <0.1 | 0.1 |
| Chloral Hydrate | <0.1 | 1.5 | 1.7 | 1.7 | 1.8 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 |
| Chloropicrin | <0.1 | 0.2 | 0.2 | 0.2 | 0.2 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 |
| Cyanogen chloride | <0.1 | 1.4 | 1.9 | 1.8 | 1.8 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
|
Water type: |
|
| R | raw water - laboratory |
| T | plant effluent - laboratory |
| D1 | distribution system - Croydon fire hall |
| D2 | distribution system - Glencairn reservoir |
| D3 | distribution system - Stittsville arena |
| na | not analysed |
| S1 | Sink #1 - preparation room |
| S2 | Sink #2 - preparation room |
| S3 | Sink #3 - preparation room |
| S4 | Sink #4 - preparation room |
| S5 | Sink #5 - preparation room |
