ARCHIVED - Concentrations (µg/L) of disinfection by-products (DBP) in drinking water from St. John's (NF) and Kemptville College for Total Diet Study in 2001
| DBP | Bay Bulls Big Pond, St. John's | Windsor Lake, St. John's | Kemptville College | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| R | T | D1 | D2 | D3 | R | T | D1 | D2 | D3 | S1 | S2 | S3 | S4 | S5 | |
| Monochloroacetic acid | <0.1 | 0.7 | 1.0 | 0.8 | 1.0 | <0.1 | 1.2 | 0.9 | 1.0 | 0.5 | na | <0.1 | na | na | na |
| Dichloroacetic acid | 0.2 | 2.7 | 7.1 | 3.9 | 6.2 | 0.2 | 25.9 | 20.3 | 13.0 | 4.7 | na | 0.3 | na | na | na |
| Trichloroacetic acid | <0.1 | 0.7 | 1.1 | 1.2 | 1.7 | <0.1 | 18.9 | 13.7 | 17.6 | 3.3 | na | <0.1 | na | na | na |
| Monobromoacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <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 | <0.1 | <0.1 | 0.3 | 0.3 | <0.1 | na | 1.2 | na | na | na |
| Bromochloroacetic acid | <0.1 | 0.1 | 0.2 | 0.1 | 0.1 | <0.1 | 2.6 | 2.2 | 1.0 | 0.1 | na | 0.2 | na | na | na |
| Bromodichloroacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 1.4 | 0.9 | 1.2 | 0.1 | na | <0.1 | na | na | na |
| Chlorodibromoacetic acid | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | <0.1 | na | na | na |
| Chloroform | <0.1 | 1.2 | 2.2 | 2.3 | 3.0 | 0.1 | 21.0 | 14.2 | 21.1 | 23.3 | na | 0.2 | na | na | na |
| Bromodichloromethane | <0.1 | 0.3 | 0.3 | 0.5 | 0.7 | <0.1 | 5.5 | 4.4 | 5.4 | 5.0 | na | 0.6 | na | na | na |
| Chlorodibromomethane | <0.1 | <0.1 | <0.1 | <0.1 | 0.1 | <0.1 | 0.8 | 0.6 | 0.7 | 0.5 | na | 1.7 | na | na | na |
| Bromoform | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | 2.9 | na | na | na |
| Total Trihalomethanes | <0.1 | 1.5 | 2.5 | 2.8 | 3.8 | 0.1 | 27.3 | 19.2 | 27.2 | 28.8 | na | 5.3 | na | na | na |
| Trichloroacetonitrile | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | <0.1 | na | na | na |
| Dichloroacetonitrile | <0.1 | 0.1 | 0.1 | 0.1 | 0.2 | <0.1 | 1.2 | 0.8 | 1.1 | 0.5 | na | <0.1 | na | na | na |
| Bromochloroacetonitrile | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 0.1 | 0.1 | <0.1 | na | 0.2 | na | na | na |
| Dibromoacetonitrile | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | <0.1 | na | 0.8 | na | na | na |
| 1,1-Dichloro-2-propanone | <0.1 | 0.8 | 1.2 | 1.2 | 1.3 | <0.1 | 0.7 | 0.6 | 1.1 | 0.5 | na | <0.1 | na | na | na |
| 1,1,1-Trichloro-2-propanone | <0.1 | 0.5 | 0.7 | 0.8 | 1.1 | <0.1 | 4.1 | 3.6 | 3.9 | 1.6 | na | <0.1 | na | na | na |
| Chloral Hydrate | <0.1 | 0.5 | 0.6 | 0.6 | 0.8 | <0.1 | 4.2 | 2.6 | 4.2 | 0.7 | na | <0.1 | na | na | na |
| Chloropicrin | <0.1 | <0.1 | <0.1 | <0.1 | 0.1 | <0.1 | 0.2 | 0.2 | 0.1 | <0.1 | na | <0.1 | na | na | na |
| Cyanogen chloride | <0.1 | 0.2 | 0.4 | 0.4 | 0.4 | <0.1 | 1.0 | 0.7 | 1.0 | 0.3 | na | <0.1 | na | na | na |
Water type: Bay Bulls Big Pond, St. John's
R raw water - Bay Bulls Big Pond
T plant effluent - plant
D1 distribution system - Mt Pearl fire station (10 km)
D2 distribution system - M Brown - Paradise (15 km)
D3 distribution system - Valley View Convenience - CBS (18 km)
Windsor Lake, St. John's
R raw water - Windsor Lake
T plant effluent - plant
D1 distribution system - Kent Pond fire station (5 km)
D2 distribution system - KFC (7.5 km)
D3 distribution system - Irving - Water St (9.5 km)
Kemptville College
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
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