I reviewed the Texas code an it not only involves pumping water but waste treatment facilities are also required to have automatic start power generation power eqipment. There is no specification for the fuel but I have heard diesel is pretty much the rule.
They and hospitals can run forever with the stocks from refineries that we have available. Forever.
Of all the possible SHTF scenarios IMHO a financial collapse is the most likely given the huge gov debt and world central banks out of options dealing with sovereign debt such as Greece and etc. Central bankers are trying to buy time and prevent deflation thru currency printing and other exotic financial tools. One wrong move or one debtor nation defaults all the banks interlocked by globalism will be affected. Worst investors alarmed by all this paper currency printing may stop buying bonds at the needed price range to replace maturing bond driving up the cost to the gov for borrowing or even worst investors stop buying bonds. Either scenario will cause deflation, gov collapse and bank collapse forcing the world gov to meet and establish a new standard for paper currencies. Banks may close and currencies reset to lower value. During that bank holiday people will not be able to access ATM or use checks, credit cards and etc. Deflation will be followed by inflation. Read what happen in Brazil, Argentina, Russia, Serbia, Mexico and one of the worst Zimbabwe. Middle class will be wiped out. I think this is the most likely scenario that prepper need to prepare for.
And Texas generates as much power as it consumes, so there are local refineries and wells to keep it all going as long as power and gas aren’t sent out of the state.
Until some moron decides to set the refineries on fire.