Table 6.

Mean chronic daily intake (CDI, μg/kg/day) of heavy metals for Akaki-Kality and Gullele tap water through drinking water ingestion (CDI_ing) and dermal contact (CDI_der).

Element	Akaki Kality sub-city						Gullele sub-city
	CDIing		CDIder		CDItotal		CDIing		CDIder		CDItotal
	Adult	Child	Adult	Child	Adult	Child	Adult	Child	Adult	Child	Adult	Child
Fe	1.08	1.98	5.64 × 10−5	7.85 × 10−5	1.08 × 100	1.98 × 100	6.12	11.23	3.19 × 10−4	4.44 × 10−4	6.12 × 100	1.12 × 101
Zn	1.05	1.93	3.30 × 10−5	4.59 × 10−5	1.05 × 100	1.93 × 100	2.03	3.72	6.36 × 10-5	8.85 × 10−5	2.03 × 100	3.72 × 100
Cu	0.09	0.17	4.79 × 10−6	6.67 × 10−6	9.00 × 10−2	1.70 × 10−1	0.13	0.23	6.57 × 10−6	9.14 × 10−6	1.30 × 10−1	2.30 × 10−1
Mn	0.06	0.10	2.96 × 10−6	4.12 × 10−6	6.00 × 10−2	1.00 × 10−1	0.54	0.99	2.80 × 10−5	3.90 × 10−5	5.40 × 10−1	9.90 × 10−1
Ni	0.03	0.05	2.67 × 10−7	3.72 × 10−7	3.00 × 10−2	5.00 × 10−2	-	-	-	-	-	-
Cr	0.05	0.09	5.06 × 10−6	7.05 × 10−6	5.00 × 10−2	9.00 × 10−2	-	-	-	-	-	-
Pb	0.12	0.23	2.56 × 10−5	3.57 × 10−5	1.20 × 10−1	2.30 × 10−1	0.15	0.27	3.10 × 10−5	4.31 × 10−5	1.50 × 10−1	2.70 × 10−1
As	0.05	0.09	7.29 × 10−6	1.02 × 10−5	5.00 × 10−2	9.00 × 10−2	0.01	0.02	1.70 × 10−6	2.36 × 10−6	1.00 × 10−2	2.00 × 10−2

CDI total = CDI_ing + CDI_der.