Parameters

BIS: 10500-1991

(Revised 2012)

Control site

Lake A

Lake B

Arsenic

0.05

0

0.001

0.003^a

Mercury

0.001

0

0

0.023

Aluminium

0.03 - 0.2

0

0.067 ± 0.001^a

3.7 ± 0.089^a

Cadmium

0.01

0

0.04 ± 0.01^d

0.124 ^a

Lead

0.05

0

0.04 ± 0.008^d

0.23^a

Copper

0.05 - 1.5

0.01

0.03^a

0.25 ± 0.01^a

Zinc

5 - 15

0.54 ± 0.02

1.67 ± 0.01^a

3.12 ± 0.01^a

Iron

0.3 - 1

0.04 ± 0.01

0.11 ± 0.008^a

3.02 ± 0.006^a