PARAMETERS

STATION 1

$\overline{X}$ ± SE (Min-Max)

STATION 2

$\overline{X}$ ± SE (Min-Max)

STATION 3

$\overline{X}$ ± SE (Min-Max)

WHO limit

P-value

Significance

pH

5.797 ± 0.325

(5.00 - 7.13)

5.6367 ± 0.231

(4.90 - 6.62)

5.4233 ± 0.168

(5.09 - 6.18)

6.5 - 8.5

0.582

P > 0.05

Temperature (˚C)

28.750 ± 0.544

(27.0 - 31.0)

27.750 ± 0.528

(26.5 - 29.5)

28.417 ± 0.821

(26.0 - 32.0)

NG

0.550

P > 0.05

EC (µS/cm)

3940.82 ± 1425.87^a

(281.5 - 9080)

400.80 ± 172.85^a

(154.1 - 1330)

242.62 ± 110.28^b

(50.5 - 830)

NG

0.017

P < 0.05

Colour (Pt. Co)

6.400 ± 2.069^b

(0.0 - 13.5)

21.133 ± 3.242^a

(11.9 - 31.1)

4.233 ± 1.232^b

(0.0 - 8.5)

5.0

0.000

P < 0.001

Turbidity (NTU)

1.783 ± 0.697^a

(0.0 - 10.6)

0.181 ± 0.084^b

(9.6 - 28.9)

0.11067 ± 0.055^b

(0.0 - 7.6)

5.0

0.000

P < 0.001

TSS (mg/l)

7.317 ± 1.899^b

(0.0 - 12.7)

20.367 ± 3.787^a

(8.4 - 32.7)

6.517 ± 1.675^b

(0.0 - 11.6)

500 - 1500

0.003

P < 0.01

TDS (mg/l)

197.100 ± 774.082^a

(132.8 - 4550.0)

198.717 ± 94.608^a

(72.7 - 670.0)

120.183 ± 58.874^b

(23.1 - 410.0)

500

0.017

P < 0.05

Salinity (‰)

1.783 ± 0.697^a

(0.127 - 4.110)

0.181 ± 0.085^b

(0.070 - 0.600)

0.111 ± 0.055^b

(0.023 - 0.380)

200 - 600*

0.017

P < 0.05

DO (mg/l)

5.433 ± 0.161

(4.7 - 5.8)

5.100 ± 0.177

(4.6 - 5.9)

5.383 ± 0.312

(4.2 - 6.3)

5

0.548

P > 0.05

BOD₅ (mg/l)

3.383 ± 0.223

(2.7 - 3.9)

3.300 ± 0.249

(2.1 - 3.8)

2.750 ± 0.251

(1.8 - 3.7)

NG

0.166

P > 0.05

COD (mg/l)

15.433 ± 1.33

(11.0 - 18.9)

14.800 ± 1.084

(10.1 - 17.3)

12.233 ± 1.153

(8.7 - 16.7)

NG

0.168

P > 0.05

HCO₃ (mg/l)

132.350 ± 33.763^a

(35.5 - 255.0)

47.483 ± 6.129^b

(29.2 - 70.9)

30.267 ± 6.578^b

(11.7 - 53.8)

NG

0.006

P < 0.01

Na (mg/l)

11.773 ± 4.686^a

(1.16 - 28.40)

1.297 ± 0.227^b

(0.70 - 2.09)

0.752 ± 0.080^b

(0.51 - 1.06)

NG

0.019

P < 0.05

K (mg/l)

1.880 ± 0.731^a

(0.25 - 4.72)

0.155 ± 0.155^b

(0.11 - 0.19)

0.152 ± 0.025^b

(0.08 - 0.24)

NG

0.015

P < 0.05

Ca (mg/l)

16.498 ± 5.563^a

(3.15 - 38.70)

1.790 ± 0.205^b

(1.11 - 2.40)

1.200 ± 0.111^b

(0.84 - 1.63)

NG

0.006

P < 0.01

Mg (mg/l)

6.953 ± 2.851^a

(0.95 - 19.30)

0.922 ± 0.130^b

(0.56 - 1.40)

0.573 ± 0.064^b

(0.39 - 0.81)

NG

0.025

P < 0.05

Cl (mg/l)

179.367 ± 57.861^a

(64.5 - 417.1)

55.083 ± 7.404^b

(34.1 - 82.4)

26.217 ± 3.525^b

(16.2 - 39.2)

200 - 600

0.013

P < 0.05

P (mg/l)

2.458 ± 1.495^a

(0.26 - 9.85)

4.357 ± 1.032^a

(1.38 - 8.33)

0.782 ± 0.208^b

(0.33 - 1.62)

NG

0.088

P > 0.05

NH₄N (mg/l)

0.068 ± 0.018

(0.000 - 0.127)

0.064 ± 0.014

(0.000 - 0.101)

0.031 ± 0.011

(0.000 - 0.071)

NG

0.179

P > 0.05

NO₂ (mg/l)

0.12 ± 0.033

(0.00 - 0.243)

0.14 ± 0.003

(0.00 - 0.217)

0.060 ± 0.013

(0.00 - 0.085

10

0.151

P > 0.05

NO₃ (mg/l)

3.405 ± 1.110

(0.27 - 8.40)

3.268 ± 1.006

(0.01 - 7.10)

1.153 ± 0.387

(0.38 - 2.56)

45

0.170

P > 0.05

SO₄ (mg/l)

3.718 ± 0.874^a

(1.19 - 7.37)

1.067 ± 0.223^b

(0.54 - 1.98)

0.552 ± 0.115^b

(0.22 - 0.98)

200

0.001

P < 0.01

THC (mg/l)

1.772 ± 0.843

(0.09 - 4.90)

3.888 ± 2.044

(0.14 - 11.40)

0.683 ± 0.307

(0.02 - 1.80)

10

0.235

P > 0.05