Washing fruits and veggies is normal practice.. The effectiveness depends on the way we wash them..
Cold water soak followed by flushing water and rubbing seem to be the best.. But many people use either a salt, vinegar or lemon solution to break down the wax, when applicable..
The link below is from Consumers Report from 2015 and provides a really neat tool that shows a high/low amount of pesticides on many common fruits and veggies.. They also mention that organic grown, sits in the low to very low range..
Many of you know that I buy organic for the most part.. This link just makes it a more committed decision for me..