Table 5.
Average trihalomethane analyte percentage and concentration by source, Tanzania
| Source | Chloroform | Bromodichloromethane | Dibromochloromethane | Bromoform |
|---|---|---|---|---|
| River | 95.0%, 47.1 μg/L | 4.6%, 2.3 μg/L | 0.2%, 0.1 μg/L | 0.1%, 0.1 μg/L |
| Lake | 78.7%, 24.4 μg/L | 18.2%, 5.6 μg/L | 2.8%, 0.9 μg/L | 0.2%, 0.1 μg/L |
| Tap* | –, 4.1 μg/L | –, 1.7 μg/L | –, 1.2 μg/L | –, 0.3 μg/L |
| Pond | 73.9%, 33.4 μg/L | 20.1%, 9.1 μg/L | 5.7%, 2.6 μg/L | 0.2%, 0.1 μg/L |
| Open well* | –, 4.5 μg/L | –, 2.6 μg/L | –, 2.8 μg/L | –, 0.7 μg/L |
| Borehole* | –, 4.8 μg/L | –, 2.2 μg/L | –, 1.8 μg/L | –, 0.4 μg/L |
*
Percentages not included for these sources because all average analyte concentrations were below the 4.0 μg/L minimum detection limit for chloroform.