Parameters L1 L2  Mean (L1 & L2) NT 106 002**
pH 8.25 8.15 8.20 6.5-9
Electric conductivity (ms/cm) 42.80 36.50 39.65 NA
COD (mg O2/l) 20500 22460 21480 1000
BOD5 (mg O2/l) 5780 5200 5490 400
BOD5/COD 0.28 0.23 0.25 0.4
Fe (mg/l) 20500 22460 21480 5
Cr (mg/l) 1.22 1.12 1.17 0.5
Zn (mg/l) 0.72 0.77 0.745 5
Cu (mg/l) 0.81 0.78 0.795 1
Cd (mg/l) 0.042 0.047 0.044 0.1
Ni (mg/l) 0.22 0.25 0.23 2
Pb (mg/l) 0.4 0.3 0.35 1
Mn (mg/l) 0.048 0.051 0.046 1
** Norm for the wastewater drained to public sewer, Tunisia
NA: Not available
Table 2: Physical and biochemical of Jebel Chakir leachate landfill site.