Water quality parameter Location/Measurement station  Tolerance value
River Coastal
Temperature (°C) 26.77 ± 17.94 28.56 ± 2.72 20 – 32
Salinity (o/oo) 17.95 ± 3.79 30.90 ± 4.01 5 – 34
DO (mg/l) 6.02 ± 0.86 5.89 ± 1.41 ≥  3
pH 7.77 ± 0.42 8.06 ± 0.40 6.5 – 8.5
BOD5 (mg/l) 1.32 ± 0.80 0.74 ± 0.27 < 25
TSS (mg/l) 60.44 ± 9.35 58.17 ± 22.18 25 – 80
BOT (mg/l) 26.04 ± 5.73 18.77 ± 5.64 -
Turbidity (NTU) 21.41 ± 4.41 14.42 ± 17.63 ≤  30
NH3-N (mg/l) 0.1101 ± 0.0812 0.2636 ± 0.3303 ≤ 1.0
NO2-N (mg/l) 0.0251 ± 0.0073 0.2483 ± 0.5690 0.25
NO3-N (mg/l) 0.0924 ± 0.1241 0.0111 ± 0.0140 -
PO4-P (mg/l) 0.0053 ± 0.0036 0.0582 ± 0.0647 0.05 – 0.50
Table 2: Analysis data of water quality parameters measurement in several stations of river and coastal.
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