**3. Conclusions**

From the results that have been obtained in the investigation related to the contamination of water, soil, and passion fruit (*P. ligularis*) in Oxapampa, due to the excessive use of agrochemicals in the agricultural fields, it is concluded that the fruits indeed have a content of metals As, Pb, Cd, Hg, and Cu, which when compared with the provisional tolerable weekly intake, PTWI, toxicological criteria for heavy metal intake in foods because they are cumulative, expressed in mg/kg of body weight for each heavy metal is evident that the risk of toxicity to human

health is increasing if corrective measures are not taken to mitigate these future impacts.

The quality of runoff water in the agricultural sector was compared with water quality data from the livestock sector within the same area of study, observing that the levels of contamination by As, Cd, and Cu are increasing in the agricultural sector compared with nonpresence of the same in the cattle fields. Not so in relation to soil contamination, because when comparing the results of the study with others within the sector, it was observed that the livestock sector is more impacted by the five heavy metals compared with the agricultural sector. This accumulation of heavy metals in livestock soils would be due to the drag, transport, and diffusion mechanisms of agrochemical contaminants formulated with these metals, which are applied in excess in agricultural fields that occupy higher slopes, concluding that there is a process increasing environmental contamination in Oxapampa and that represents a potential risk to human health due to ingestion through fruits, and other foods that are consumed in the place and outside of it, as some of these are for export.

By an analysis of variance, with a probability of α = 0.05 and a confidence level of 95%, for comparisons between three groups of farmers (A, B, and C), selected according to the intensity of application of agrochemicals in production of granadilla fruits, it was shown that in the case of the concentrations of heavy metals in fruits, such as arsenic, mercury, lead, and copper, there are no significant differences; not so for cadmium, which showed a significant existence. In the case of the content of heavy metals in soils, such as arsenic, lead, cadmium, and copper, it was also shown that there are no significant differences; however, mercury showed significant existence. In the case of the content of heavy metals in runoff waters such as arsenic, mercury, lead, cadmium, and copper, it was shown that there are no significant differences.

Therefore, considering the spatial and temporal environment of agricultural and livestock activities in the district of Oxapampa, it is concluded that there is a potential risk of toxicity to human health due to ingestion of granadilla (*P. ligularis*).
