I don't follow youtube links during work hours as a personal policy but an India government webpage outlines the water test for whole tumeric: https://eatrightindia.gov.in/dart/

> Test 14 : Detection of lead chromate in turmeric whole > Testing Method: > * Add small quantity of turmeric whole in a transparent glass of water. > * Pure turmeric will not leave any colour. > * Adulterated turmeric appears to be bright in colour and leaves colour immediately in water.

The Youtube video was also made by the Indian Government. Validating the Indian Government's claim against the Indian Government's same claim (Test 15 in this case) probably doesn't tell us much

Test 15 is the test for powdered tumeric. Of course, their photographs also look photoshopped (the pure and adulterated photos have the exact same pattern near the bottom), which was rather confusing…

Even without that it's hard to make a judgement of the results without having something to compare it with.

That's for whole turmeric.