The objective of this study was to perform a probabilistic risk analysis (PRA) to assess the health risk
of Cadmium (Cd), Copper (Cu), and Zinc (Zn) through the consumption of food crops grown on farm
lands fertilized by biosolids. The risk analysis was conductedusing 8 years ofhistoricalheavymetal data
(2005–2013) of the municipal biosolids generated by a nearby treatment facility considering one-time
and long-term biosolids land application scenarios for a range of 5–100t/ha fertilizer application rate.
The 95th percentile of the hazard index (HI) increased from 0.124 to 0.179 when the rate of fertilizer
application increased from 5 to 100t/ha at one-time biosolids land application. The HI at long-term
biosolids landapplicationwas alsofound1.3and1.9timesgreater thanthatofone-time landapplication
atfertilizer application rates of 5 and 100t/ha, respectively. Rice ingestion had more contribution to the
HI than vegetable ingestion. Cd and Cu were also found to have more contribution to the health risk
associated to vegetable and rice ingestion, respectively. Results indicated no potential risk to the human
health even atlong-term biosolids land application scenario at 100t/ha fertilizer application rate