What is milk preservatives adulteration?

Fresh milk is prone to rapid microbial spoilage and when water is adulterated (which is very common adulteration) it increases the risk of microbial contamination. Chemical like formalin and hydrogen peroxide are one of the commonly used preservatives which increase shelf life of milk, your milkman or dairy farmer may add a few drops of these chemicals to reduce the expenses of refrigeration, electricity, and consequences of water adulteration, due to its high toxicity, these chemicals are considered to cause liver and kidney damage.

The World Health Organization (WHO) had recently issued an advisory to the Government of India stating that if adulteration of milk and milk products is not checked immediately, 87 percent of citizens would be suffering from serious diseases like cancer by the year 2025. (Source)

Have you ever observed milkmen delivering milk till afternoon, how their milk remains fresh throughout the day, don't they use preservatives, think……?

One of the principals of the milk lady business is to deliver milk in time to avoid any chance of adulterating preservatives, still COATA continuously monitors milk quality and adulteration test, in December COATA randomly collected samples 4 times and checked quality and preservative adulteration, no adulteration were found.

Results are given below: