We recently had a BLACKOUT that lasted for 20 hours. Everything in the house works by Electric. Once the lights came back on, one hour later, the water shut down entirely. I have 'Well' water. On my Water System Tank, the gauge is on "0", No activity at all. The same holds truth for, The Septic Tank, and Hot Water Heater. WE ARE NOW ON DAY NUMBER TWO OF THIS CRISIS. Can you help me out ?

Have you checked breakers in the electric panel?

You might reset your well breaker at your breaker panel. It should be marked "well" or "pump" or something similar.

Does your pressure switch have a small lever on the side of it? If so, push the lever until pressure gauge starts showing pressure.