Table 1 Styrene and toluene concentrations (μg/L) in drinking water samples

Apartment 1^st floor

11 Dec

Styrene

905

Toluene

7.5

Apartment 3^rd floor

11 Dec

Styrene

779

Toluene

6.6

Apartment 8^th floor

12 Dec

Styrene

767

Toluene

6.8

Apartment 4^th floor

14 Dec

Styrene

<0.5

Toluene

<0.5

Water tank

14 Dec

Styrene

0.6

Toluene

0.5

Apartment 4t floor

17 Dec

Styrene

<0.5

Toluene

<0.5