How would you eliminate lead exposure by making your own pouches? Would you test the produce you use for led before using it? I ask because there is no source

How would you eliminate lead exposure by making your own pouches? Would you test the produce you use for led before using it? I ask because there is no source that guarantees 100% that it won't have harmful lead levels. Lead is often introduced through the soil, so unless your organic farm where you buy produce either tested the soil ahead of time (pretty rare unless someone though it might be a concern) or regularly tests the produce they make, you're just assuming it won't have harmful lead levels.