DaasYochid: our understanding of “checking carefully’ is obviously quite different. (You mentioned the Chochmas odom). No one is arguing with checking vegetables and some fruits for obvious infestation. My argument is with the extravagant requirement that you ask for today. Washing with detergent? Filtering perfectly clean drinking water (that comes filtered,by the way)? And other outlandish ways. Again, we are not “malachei Hashores”. It is sensible to rinse, even rinse very carefully, vegetables and fruits. But soap? they had some very strong cleansers in antiquity, yet no ancient Possek requires to scour fruit so as to remove whatever creature may be there.
Water was way dirtier in previous centuries and all vegetables were infested to a much greater degree. Today, pesticides and other preventive ways have, by and large, removed bugs and obvious insects. If you want to be “machmir’, at least be practical. As I said, even I cut off the top of the strawberries that are said ( I never checked) to contain small insects. If you truly believe that New York water contains insects that are ossur, install a commercial filter. In other words, doing something sensible is certainly enough to be “yotzei’ the obligation of checking.