Water category

Fe (p=0.000) Mean±SE

Mn p=0.050) Mean±SE

Pb (p=0.050) Mean±SE

Mg (p=0.001) Mean±SE

Ca (p=0.576) Mean±SE

Hg (p=0.239) Mean±SE

Tapwater

0.000±0.000a

0.000±0.000

0.000±0.000

3.861±3.767a

128.846±8.640a

0.001±0.000

Bathroom

0.001±0.001a

0.003±0.000

0.000±0.000

7.631±0.599b

95.078±4.022a

0.001±0.000

Laundry

0.004±0.000a

0.001±0.001

0.000±0.000

3.577±0.920a

106.977±5.991a

0.001±0.000

Kitchen

1.315±0.156b

0.004±0.000

0.000±0.000

5.419±0.657b

108.516±6.931a

0.001±0.000

Matrix

0.003±0.222a

0.002±0.001

0.000±0.000

2.485±0.758a

90.406±4.382a

0.001±0.000

NB: Same superscripts mean no significant difference and different superscripts indicate significant difference
Table 2: Levels of metal ions (mg/l) in pH adjusted tap water and treated grey water.