Al

Cr

Fe

Ni

Cu

Zn

Cd

Pb

Reference

Cooler drinking water in Riyadh school

0 - 107

(48)

0.5 -3.8

(1.95)

5.79-264

(62.4)

0.42-129

(11.79)

2.19-106

(18.38)

14.4 - 571

(154.07)

0 - 3.4

-

(Al-Saleh [24])

Bottled drinking water produced in KSA

< BDL

BDL-0.7

BDL-29

BDL-12.7

BDL-0.91

BDL-17.4

< BDL

< BDL

(Alfadul and Khan [27])

Water samples from Wadi Hanifa Riyadh, KSA

-

2-5

415-1340

4-17

27-528

236-1100

3 - 7

26 - 93

(Al-Hammad and El-Salam [23])

Ground water in Riyadh region

9.3-529

(184.27)

ND-30

(3.3)

ND-9585

(738.3)

ND-38

(2.3)

ND-226

(6.95)

ND -1422

(27.95)

ND - 4

(1)

ND - 34

(7.98)

(Alabdula’aly et al., [25])

Cooler drinking water in Riyadh

0.4-181

(9.7)

0.1-14.5

(0.4)

0.08-558

(45.4)

0.5-309

(8.1)

0.2-115.4

(7.7)

3.3 -721

(173)

-

1- 60

(1.6)

(Alabdula’aly and Khan [26])

Water network in Riyadh

0.6-4.2

(1.82)

1-7

(3.73)

224-1215

(832.83)

1.1-4

(2.62)

4.3-11.6

(6.72)

8.7-52.2

(23.36)

0.004 -0.289

(0.023)

0.3 - 0.7

(0.47)

This study