Persephone Farm in Lebanon/Sweet Home Oregon soaks eggs rather than washing with running water

"Although the USDA does not allow immersion washing (allowing eggs to stand or soak in water), most small producers are not operating under USDA requirements. Most operate under exemptions to state egg laws and washing methods are usually not specified. Small-scale egg washing should take place with a continuous flow of water, such as dipping, spraying or pouring, that allows the water to drain away from the eggs...

"Naturally, the egg has good defenses to help protect the embryo during incubation. The shell is covered by a waxy layer (the cuticle) that helps prevent microbes from entering the pores that allow the passage of gases. The cuticle is not impenetrable and water on the surface of the egg shell can undermine these defenses because water helps bacteria pass through the shell pores into the egg. If the period of contact between egg and water is short, there will be little microbial penetration into the egg (Zeidler, 2002). Therefore, it is important to limit the amount of time that the shell is wet. Soaking eggs in water for as little as one to three minutes can allow microbes to penetrate the shell (Zeidler, 2002). "

http://www.thepoultrysite.com/articles/1548/smallscale-egg-handling-1


according to this web site:

"....Excessively dirty eggs should not be cleaned, but rather discarded this is because microbes penetrate the pores of the eggs."

In my experience working at Persephone Farms they wash and feed them to the public, so beware.