Chemical parameters |
Samples |
Tunisian Standard
(NT 106 002) ** |
WHO standards
[19] |
Groundwater sample |
Rivers of Oued Bir El Jazzar |
(S1) |
(S2) |
(S3) |
pH |
7,9 |
7,6 |
7,8 |
6.5 < pH < 8.5 |
6.5-9.2 |
BOD (mg O2/l) |
25 |
20 |
22 |
30 |
-- |
COD (mg O2/l) |
80 |
60 |
65 |
90 |
-- |
Salinity (mg/l) |
4900 |
1800 |
1900 |
-- |
1200 |
Na (mg/l) |
949.9 |
190 |
200 |
300 |
200 |
Nitrogen (mg/l) |
4 |
2 |
1 |
1 |
1.5 |
Chloride (mg/l) |
1402 |
80 |
55 |
600 |
250 |
Mg(mg/l) |
180 |
40 |
50 |
200 |
30 |
SO4(mg/l) |
580 |
130 |
100 |
600 |
250 |
Cd (mg/l) |
0.05 |
ND |
0.005 |
0.005 |
0.01 |
Zn (mg/l) |
0.30 |
0.15 |
0.2 |
5 |
5.0 |
Cu (mg/l) |
0.45 |
0.25 |
0.3 |
0.5 |
1.0 |
** Norm for the wastewater drained to public water body, Tunisia
ND: not detected |
