How to store emergency water in a 55 gallon barrel: food-grade rules, pumps, treatment, placement, weight and rotation for home use.
- Use only a new or known food-grade barrel.
- A full barrel is very heavy, so place it on level ground and never upstairs.
- Plan the pump, treatment and rotation before you fill.
A 55 gallon (about 200 litre) barrel is one of the simplest ways to store a large reserve of water at home. One full barrel covers a family of four for roughly three days at the standard planning figure of 4 litres (1 gallon) per person per day for drinking and basic hygiene, and it covers more if you ration. It is an affordable backup, but it needs the right container, setup and routine.
Read this alongside how much water to store and how long stored water lasts.
Choose a food-grade barrel
Only use a barrel made and sold for drinking water or food use, usually marked food-grade and made of suitable plastic. Do not reuse a barrel that held chemicals, fuel, oil or anything non-food, even if it has been rinsed. Used food barrels from a reliable source may be fine, but you must know exactly what was in them. When in doubt, buy new.
Where to place it
- Choose a cool, dark spot out of direct sunlight, such as a basement, garage or utility room. Light and heat encourage algae and degrade plastic.
- Set it on level ground. Water is heavy: a full barrel weighs about 200 kg (440 lb) before you count the container, so check the floor and never put it upstairs or on shelving.
- Keep it away from gasoline, solvents and pesticides, since vapours can pass through some plastics.
- In freezing climates, keep it in a space that stays above freezing, or accept that it may freeze. Water expands when it freezes and can crack the container or fittings.
- Place it on a wood or plastic pallet, not directly on bare concrete.
Clean and fill
- Wash the barrel with dish soap and rinse it well.
- Sanitize with a mild bleach solution following the container maker's instructions, then rinse thoroughly.
- Fill from a safe municipal tap with a food-grade hose. If your source is not treated, treat it first.
- Seal the bungs tightly, and write the fill date on the barrel.
Treating the water
Municipal water in Canada and the US is already treated with a disinfectant, but many people add a small, measured amount of plain unscented household bleach to extend storage when using a barrel. Exact amounts depend on the product's strength, so follow the guidance in our bleach and tablet guide, which follows EPA advice, and always check the label. Do not guess the ratio. If you fill from a well, see well water in an outage.
Getting the water out
Pouring from a full barrel is impractical and unsafe. Use a siphon, a hand pump designed for the barrel, or a spigot adapter fitted to a bung. Test the method while the barrel is only partly full, and keep a clean funnel and a few smaller containers so you can carry water to where you need it. Store the pump in a clean bag beside the barrel.
Rotation
Many sources suggest replacing stored tap water about every six months to a year, but follow the guidance of your treatment method and your local authority. Mark a calendar date, drain, clean and refill. Use the old water for gardens or cleaning.
Is a barrel right for you?
A barrel suits a house with space. If you live in an apartment or want something portable, smaller containers may be better (see water storage containers). For filtering options, see our water hub.
Safety and practical tips
Label the barrel clearly as drinking water with the fill date, and keep children and pets away from the bungs. Check for leaks and condensation each season, and make sure there is a drain or a floor surface that can handle a spill. A barrel is a backup, not your only plan, so also store some water in smaller jugs you can carry and keep a way to filter or disinfect more. If you live in an area that may flood or freeze, think about where the barrel will be safe during the event. Finally, tell the household how the pump works, so anyone can get water if you are away.
Quick answers
How long does water in a barrel stay good?
It depends on treatment and storage conditions. Many guides suggest refreshing it every six months to a year, so follow your local authority and treatment instructions.
Can I use a barrel that held something else?
Only if it held food-grade products and you know its history. Never reuse containers that held chemicals or fuel.