Greetings, my friend @hubeyma. Thank you for your visit and lovely comment.
And I concur, that is one of the most valuable assets of growing your own food: keeping it clear from dangerous contaminants. You are in control of the growing medium (homemade compost) and the food (rain water) you give to the plants, and you know exactly what you are growing at the end of the day. There is basically full transparency, something you will not find in the shops.