For fresh produce I use filtered tap water. Or filtered tap water with a splash of vinegar. For berries & grapes, I wash in filtered water, dry on clean dish towels, and store in sealed glass jars. For fruits with a skin or root veggies, filtered tap water and a soft veggie scrub brush (goes through the dishwasher on every cycle.)

For frozen produce, I guess I just trust fate - they go into smoothies or salads untouched.
This has been my process for over 50 years, and I'm still here!
FYI - I eat fresh produce, including salads from my garden, friends and neighbors and farmers' markets.

I fall into the category my ID doc describes as laissez faire - I've been eating from the same soil all my life, so I assume it's not going to kill me. So far, it hasn't been an issue for me, so I haven't added the burden of worrying about it to my life.