We take so many things for granted, like running water in the home.
Wakening up to no water this morning (water main break in Ellicott City, Maryland) meant it was time to break out a gallon of stored water.
I noticed a "Use by" date near the bottom of the water jug. If you store water for such emergencies, it's a good idea to rotate the jugs out every year or so to help ensure the water is safe to drink.
As with so many things in life, that depends. In checking with the CDC, they recommend storing 1-gallon per person per day, with a 3-day minimum. My practice is to store enough water to last for 2-weeks.
Here's the CDC's guidance from https://emergency.cdc.gov/preparedness/kit/water/.
Live Safe Today... and every day!
Steve Carter
May 17, 2017
If a disaster strikes your community, you might lose access to clean water. Take steps now to store emergency water supplies and learn other useful tips for getting water in an emergency, so you and your family have water with which to drink, cook, and wash.
STEP 1: DECIDE HOW MUCH WATER YOUR FAMILY WILL NEED
Store enough bottled water for everyone in your household.
STEP 2: GATHER AND STORE YOUR EMERGENCY WATER SUPPLY
Pre-packaged bottled water is the safest option for your emergency water supply.
There are two ways to get your emergency water supply:
How to clean containers for water storage:
STEP 3: STAY HEALTHY AND SAFE
Stay Hydrated. In an emergency, drink at least 2 quarts (half of a gallon) of water each day. Children, pregnant women, people who are sick, and people living in hot climates should drink more —as much as a gallon.
Do Not Ration Water. Never risk dehydration. Dehydration can cause serious health problems. Even if water supplies are running low, drink the amount you need today and look for more tomorrow.
Only Drink Clean Water. If you run out of safe drinking water in an emergency, there are steps you can take to make contaminated water safe to use. Visit CDC's Healthy Water website for instructions on how to make water safe for drinking or cooking. Untreated water can make you very sick, because it often contains toxic chemicals, heavy metals, and germs. Never drink flood water.
Protect Your Home. Learn where the water shut-off valve to your home is. If you hear reports of broken water or sewage lines, shut off the water to your house in order to avoid letting unsafe water enter your home.