UPDATE: Copepods (zooplankton) insects in CANADIAN city water
Copepods insects in NYC city water supply was discovered a few years ago. Therefore filters were installed by NYC's food facilities under Hashgocha.
It was recently found also by the facilities out of NYC e.g. Canada that are processing prechecked vegetables, and they were not aware of the problem. Check with the hashgochas of the prechecked vegies.
Copepods are larger than mites. If the filters & Mashgichim didn't cath the copepods, they missed all of the mites as well.
UNLESS they never had filters, Mashgichim only saw the thrips & aphids. We're in trouble, I'm afraid.