Anthropogenic activity

Change in heavy metal content of water samples (mg∙L⁻¹)

Total pollutant (mg∙L⁻¹)

Zn

Cu

Mn

Pb

Fe

Agriculture

1.340

0.0

0.138

2.694

0.045

4.217

Livestock

1.950

0.0

0.176

2.760

0.04

4.890

Domestic waste

0.810

0.0

0.120

2.417

0.07

3.354

Carwash

1.283

0.0

0.187

1.726

0.04

3.200

Total

6.383

0.0

0.621

9.597

0.195

15.796

Mean per activity

1.596

0.0

0.155

2.400

0.049

3.949

Percentage change (%)

149.5

0.0

203.6

92.8

31.7

MCL to support aquatic life

0.0766

0.1

/

0.0058

0.20

MCL for irrigation water

2.0

0.2

0.20

5.0

5.0