I tested the water from my backyard well

This video shows how to test your well water for iron, acidity, nitrates, and bacteria to determine whether it is safe to drink.

The water test I used is only $30: https://amzn.to/3CLscCX

Original video: https://youtu.be/1wOOL4RGjcg
Responding to comments: https://youtu.be/R8D3_EgZSSA
Answering MORE comments: https://youtu.be/RHVqbrsPRVk