Table 3 National and international standards of mineral compounds and coliform bacteria in the groundwater for human consumption.

From: Mineral pollutants and coliform contamination in groundwater pose health risks to consumers: a spatiotemporal study in a mining-impacted area

 

This study

Standards

 

Spring

Autumn

ISO (Iran)

EPA

WHO

PO43-

0.70 ± 0.34

0.71 ± 3.18

-

-

0.12

NH4+

0.82 ± 0.9

4.68 ± 31

-

1

1.5

SO42-

175.45 ± 123

306.72 ± 615.80

-

250

250

NO3-

15.26 ± 9.41

19.30 ± 15.61

45

10

50

F-

0.53 ± 0.68

0.72 ± 0.65

1.5

4

1.5

Coliform

554.50 ± 245.50

401.02 ± 450.22

0

0

0

  1. ISO: Iranian Standard Organization, EPA: Environmental Protection Agency, WHO; World Health Organization.
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