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Table 1 Water quality standards of TEPA for heavy metal content in surface water

From: Hazard ranking of wastewater sources in a highly polluted river in northern Taiwan by using positive matrix factorization with metal elements

Element

Ag

As

Cd

Cr6+

Cu

Hg

Mn

Ni

Pb

Se

Zn

MACa (μg L−1)

50

50

5

50

30

1

50

100

10

10

500

  1. aMAC Maximum allowable concentration