Here's something most people don't think about until the moment it happens.
Your municipal water supply doesn't run on gravity. It runs on electricity. Pumping stations, pressure systems, treatment facilities — they all require continuous power to keep water moving through the pipes and safe to drink by the time it reaches your faucet.
When the grid goes down, those systems run on backup generators. Generators that the utility company didn't budget to run for more than 24 to 48 hours.
After that window closes, pressure in the lines drops. Contaminants get in. Bacteria and pathogens that were being filtered and treated at the plant start making their way into the distribution system.
In Jackson, Mississippi, this isn't a hypothetical. It happened. The water crisis that began in August 2022 left nearly 180,000 residents without safe running water — not for a day, not for a week, but for months. Parents were boiling water to bathe their infants. Hospitals were trucking in supplies. And Jackson had a functioning water infrastructure before the event. It just failed under pressure.
That's what "boil water advisory" actually means: the water coming out of your tap right now is not safe to drink untreated.
No power. No pressure. No clean water. Your family needs a gallon per person, per day, at minimum. For a family of four, that's 28 gallons a week.