things like beets, carrots, radishes will all be fine once cooked.
To insure that you don't have to worry about pathogens, start using a product called RIDEX monthly, adding this bacterial booster to your septic system will get rid of those pathogens and keep everything working as it should.
If you have any concerns, just build raised beds, that way there will be enough soil between the leach field and your garden vegetables.
You can also inoculate with more bacteria (EM) and you can also inoculate with fungi (oyster spawn is super for this and you will end up with some super tasty mushrooms as a bonus.)
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