The four basic types of food adulteration are milk adulteration, grain adulteration, adulteration of oil and fats, and other adulteration.

food adulteration , water adulteration , drug adulteration

Prachi Sharma has written:

'Food adulteration in Rajasthan' -- subject(s): Law and legislation, Food adulteration and inspection, Economic conditions

Food adulteration is a legal term that covers any food that is not legal to be sold (as defined by federal or state government rules). Adulteration can be a result of bacterial contamination, unsafe levels of toic substances like arsenic or pesticides or because it contains foreign or unsanitary material (glass, sand, parts of insects). Food adulteration can also be a result of labels that have wrong or misleading information, or because the food or food product is not legally allowed in the U.S.

There are many ways to make food less pure. Improper hand washing or cleaning of work surfaces would be a major factor.