They are non-degradable or persistent in nature. They can be biologically magnified , meaning that the toxin accumulates in animal tissues and moves up the food chain as one contaminated animal is eaten by another, and so on. At the right concentration, various toxins can be lethal. Most of them are products or wastes from industrial processes. Ordinary household supplies can also become hazardous if disposed improperly.
Hazardous waste comes in many forms.
It can be combustible and directly discharged into the atmosphere in the gaseous state. It is solid, mostly heavy metals, in forms of dust and particulate in the air or suspended solid in the water. It is sludge and slurry waste when released into the soil and groundwater in its solid and liquid states. It is wastewater when discharged directly into water body in its liquid state. How can we get affected We can take these hazardous wastes into our body by three major ways.