What kind of hazard is characterized by the low-level, steady buildup of non-degrading substances like lead over decades?

Answer

A chronic exposure risk

Low-level, long-term accumulation of non-degrading substances builds up total concentration over time, presenting an insidious, low-dose risk across generations.

What kind of hazard is characterized by the low-level, steady buildup of non-degrading substances like lead over decades?
chemicalsoilcontaminationeffect