Table 3.

Assumptions and parameters used to assess the risk of heavy metals exposure via bottled drinking water ingestion for adult population.

Parameter	Unit	Pb	Cr	Cd	As	Ni	Ref.
Ingestion rate (IR)	Lit/days	2.2	2.2	2.2	2.2	2.2	[25,35]
Exposure frequency (EF)	days	365	365	365	365	365	[25,35]
Exposure duration (ED) for CR	Year	70	70	70	70	70	[25,35]
Exposure duration (ED) for HQ	Year	35	35	35	35	35	[25,35]
Body weight (BW)	Kg	70	70	70	70	70	[25,35]
Average time (AT) for CR	days	25550	25550	25550	25550	25550	[25,35]
Average time (AT) for HQ	days	12775	12775	12775	12775	12775	[25,35]
Oral Reference dose (RfD)	mg kg−1 d−1	0.0035	0.003	0.0005	0.0003	0.02	[10,15,36]
Oral Cancer slope factor (CSF)	mg kg−1 d−1	0.0085	0.5	6.1	1.5	–	[10,15,36]