In 1, you need to clarify what "them" means. It's better to write this: Put all the ingredients in water for more than 30 minutes and then wash them clean to get rid of any chemicals.
2 is fine.
3 is OK, but it would be better to say how much water -- 2 quarts, 1 gallon, or what?
4 will be OK if you change "a" to "the" and add the word "all" after "it."
5 is fine except for the word "bottle" which means something with a narrow opening at the top.
You should change that to "a large jar."
6 is OK, but check the spelling of "nutritious" and change "inner organs" to "health" (or "insides").