And this researcher found evidence of this in 2015, before the pandemic! Watch the water? Read the article. Diagrams of these water lines have been discovered.
Here is a quote from the article:
… In fact, the configuration of the nation’s public water systems, a configuration which contains parallel water mains, would provide the perfect, undetectable delivery system for a bio/chem attack. Blueprints obtained by this reporter—and obtained with some difficulty, it should be mentioned—clearly show two parallel lines running down each and every street in all cities where blueprints were obtained, cross connected by service lines, which provide water into residences. Remote controlled valves positioned on the second line indicate that whatever that second line contains is being withheld by these valves.
LINK
They have offered to upgrade individual lead pipe connections for free in our area. That means that they do lots of work for free pushing a new PEX pipe to the house from the road, but they will always fit a smart meter to the new connection. I think it's part of the smart city surveillance system. They want to know who is using water and when.
Our house is on a shared connection with the neighbour, so they can't differentiate who uses water unless we both agree to the new "free" PEX pipe connection. We both refused.