Berlin Gigafactory and water -
Maybe, maybe not. At a very quick look, I see 3 possibilities:
1. Water was shut off because of nonpayment. Were that the case, then rolling head or heads might be in order - someone(s) at Tesla OR someone with unprofessional conduct at the utility.
2. Water was shut off for logistical reason - changing to a different flow routine, line sourcing changed or so forth. A Known Situation for both parties.
3. A mixer being housed down, as per the above tweet, signifies nothing. Mixing trucks routinely carry independent, pressurized water tanks precisely for washing down the equipment after each pour: a mixing drum is very expensive and the easiest way to destroy it is not to clean concrete before it hardens. Absolutely routine procedure.
I view #1 as supremely unlikely but missteps or bad actors can creep in.
I view #2 as almost certainly to occur at a minimum of once during the construction period and now is at least as likely a time as any other.
I view #3 as an example of why Twitter is a moronic site from which to obtain information, as any random observer who is looking for validation for a pre-held notion, but doesn’t know what he’s looking at, can be a dangerous fool.