Table 6 Limit values of national and international regulations for VOCs and their observed concentration ranges in the drinking water samples (EU 1998; RCWHC 2005; WHO 1993; WHO 2001)
Compounds (μg/L) | Turkey | EPA | EU | WHO | Observed concentration ranges |
|---|---|---|---|---|---|
Dichloromethane | – | 5 | – | – | 0.13–0.51 |
1,1-Dichloroethane | – | 7 | – | – | < 0.10 |
Trichloromethane | – | – | – | – | 0.10–0.30 |
1,2-Dichloroethane | 3 | 5 | 3 | 30 | 0.16–0.39 |
Benzene | 1 | 5 | 1 | 10 | 0.10–0.16 |
Trichloroethene | 10 | 5 | 10 | 70 | < 0.10 |
Bromodichloromethane | – | – | – | – | < 0.10 |
Toluene | – | 1000 | – | 700 | 0.14–0.58 |
Dibromochloromethane | – | – | – | – | < 0.10 |
Tetrachloroethene | 10 | 5 | 10 | 40 | 0.39–0.41 |
Tetrachloromethane | – | 5 | – | 2 | 0.10–0.13 |
1,1,1,2-Tetrachloroethane | – | – | – | – | < 0.10 |
Ethylbenzene | – | 700 | – | 300 | 0.15-0.23 |
P&M-Xylene | – | – | – | – | < 0.10 |
Styrene | – | 100 | – | 20 | < 0.10 |
O-Xylene | – | – | – | – | < 0.10 |
Tribromomethane | – | – | – | – | 0.15–0.46 |
1,1,2,2-Tetrachloroethane | – | – | – | – | 0.11–0.23 |
Isopropylbenzene | – | – | – | – | < 0.10 |
N-Propylbenzene | – | – | – | – | < 0.10 |
1,3,5-Trimethylbenzene | – | – | – | – | < 0.10 |
1,2,4-Trimethylbenzene | – | – | – | – | < 0.10 |
1,3-Dichlorobenzene | – | – | – | – | < 0.10 |
1,4-Dichlorobenzene | – | – | – | 300 | < 0.10 |
1,2-Dichlorobenzene | - | 75 | – | 1000 | < 0.10 |
1,3,5-Trichlorobenzene | - | 600 | – | – | < 0.10 |
1,2,4-Trichlorobenzene | - | - | – | – | < 0.10 |
Naphthalene | - | - | – | – | 0.13–0.16 |
Hexachloro-1,3-butadiene | - | - | – | 0.6 | 0.10–0.17 |
1,2,3-Trichlorobenzene | - | 70 | – | – | < 0.10 |
Total Xylenes | - | 10000 | – | 500 | < 5 |
Total Trihalomethanes | 100 | – | 100 | – | < 5 |
Total Trichlorobenzenes | – | – | – | 20 | < 5 |