Considering all the cyber attacks on municipal water systems elsewhere lately (Iran warning don't hit our desalination plants?)
Could it be possible that an underwater drone was introduced into the county water source and piloted through the pipe until it reached the 40 foot area then remotely detonated in the pipe busting it open?
Iran backed sabataurs (stupid, useless ai 😂) may have gained access to NC water system maps & found that certain counties & cities are served by only one or two water mains per x thousand residents.
The same could be true of other states & localities in the US? Guilford county may not have been targeted yet since there are many more Muslim families in these areas who would be known to suffer from these attacks?