Water Storage for Rationing: How Much to Store
Water rationing is a planning problem, not an emergency. Once you know your household's daily use, storing for it is arithmetic. A family of four needs roughly 200 litres a day for basic domestic use — so surviving a three-day dry spell means storing around 600 litres. Here is how to size, store and keep that water safe.
How much water a household actually uses
| Use | Per person per day |
|---|---|
| Drinking | 2–3 litres |
| Cooking and washing up | 10–15 litres |
| Bathing (bucket) | 15–20 litres |
| Bathing (shower) | 40–60 litres |
| Laundry | 10–15 litres |
| Toilet flushing | 10–20 litres |
| Basic total | ~50 litres |
| Comfortable total | ~100 litres |
Fifty litres per person per day is the practical basic figure — enough to cook, wash, flush and drink without hardship, assuming bucket bathing. A household that showers and does laundry freely will double it.
Sizing your storage
| Household | Basic daily need | Store for 3 days | Store for a week |
|---|---|---|---|
| 1 person | 50 L | 150 L | 350 L |
| 2 people | 100 L | 300 L | 700 L |
| 4 people | 200 L | 600 L | 1,400 L |
| 6 people | 300 L | 900 L | 2,100 L |
| Guest house, 6 rooms | 600 L+ | 1,800 L | 4,200 L |
Three days is the sensible minimum in most rationed areas, and a week is the comfortable target if you have the space. Note how quickly jerricans stop being practical: 600 litres is thirty 20-litre jerricans. That is a tank, not a cupboard.
What to store water in
| Container | Good for | Watch out for |
|---|---|---|
| 20 L jerrican | Drinking water, portability, backup | Heavy when full — 20 kg; narrow neck is hard to clean |
| Bucket with lid, 10–20 L | Daily washing and cooking water | Must have a lid; open buckets collect dust and insects |
| Drum, 100–250 L | Bathroom and laundry supply | Needs a tight cover; hard to move once filled |
| Tank, 500–5,000 L | Whole-household storage | Needs a base, and shade — sunlight grows algae |
| Water dispenser bottles | Drinking only | Not a storage solution at household scale |
Keep drinking water separate from washing water — different containers, clearly marked. Once you start dipping the same jug into both, you have lost the distinction that keeps the drinking supply safe.
Keeping stored water safe
Stored water goes bad through contamination, not age. The rules are simple and they matter:
- Always covered. Uncovered water collects dust, insects and mosquito larvae. Mosquitoes need only a few days of still, open water to breed.
- Never dip a cup or hand in. Pour from a tap or a dedicated ladle. Dipping is the single most common way stored water gets contaminated.
- Rotate it. Use and refill drinking containers every few days rather than letting the same water sit for weeks.
- Keep it out of sunlight. Light plus warmth grows algae — the reason a clear tank in the sun turns green.
- Clean containers monthly. Scrub with soap, rinse, and where appropriate use a mild chlorine solution, then rinse again.
- Store off the ground where you can, so spills and ground water cannot enter the lid seal.
- Treat if the source is doubtful — boiling or an approved treatment for drinking water. Storage does not purify.
Reducing what you need in the first place
Cutting use is cheaper than adding storage:
- Bucket bathing instead of showering cuts 40–60 litres to 15–20 per person. This is the single biggest saving available.
- Wash up in a basin, not under a running tap. A running tap uses several litres a minute for no benefit.
- Reuse laundry rinse water for flushing toilets and mopping.
- Fix the dripping tap. A slow drip is measured in litres a day, and it always drips into the drain.
- Collect rainwater during the long and short rains. A modest roof fills a drum surprisingly fast, and it is ideal for laundry, cleaning and flushing.
- Keep a filled jug in the fridge rather than running the tap to get cool water.
Where households get caught out
- Storing only drinking water. Drinking is 2–3 litres of a 50-litre day. Flushing and bathing are what actually run you dry.
- One large uncovered drum. It becomes a mosquito nursery within days.
- Filling containers only when rationing is announced. By then pressure is already dropping. Keep storage full as the default.
- A tank in full sun. Green water and a scrubbing job.
- No pouring tap. If a container has no tap, people dip — and dipping contaminates.
For guest houses and rentals
If you host paying guests, water is the complaint that ends bookings. A guest who meets a dry tap does not care why.
- Store at least three days at full occupancy, not at average occupancy.
- Keep a filled backup even when mains supply is reliable — reliability is seasonal.
- Put a covered container in each bathroom during known rationing days, with a jug.
- Tell guests in advance if rationing is scheduled. Managed expectations get forgiven; surprises do not.
Frequently asked questions
How much water should a family of four store?
About 200 litres a day for basic use, so roughly 600 litres for three days and 1,400 for a week.
How much water does one person need per day?
Around 50 litres for basic domestic use including cooking, bathing and flushing, or 100 litres for comfortable use. Drinking alone is only 2–3 litres.
How long can water be stored?
Indefinitely if it is clean, covered and kept out of sunlight — but rotate drinking water every few days and clean containers monthly.
Why does my water tank turn green?
Algae, from sunlight and warmth. Shade the tank or use an opaque one.
Can I store water in open buckets?
No. Uncovered water collects dust and insects, and standing open water breeds mosquitoes within days.
What is the biggest water saving at home?
Bucket bathing instead of showering — it cuts 40–60 litres per person to 15–20.
Should drinking and washing water be stored separately?
Yes, in clearly marked separate containers, and always pour rather than dip.
Set up your storage
See outdoor and camping gear for jerricans and containers, laundry and cleaning for buckets and basins, kitchen accessories for jugs and dispensers, and bathroom for bathing essentials. Working out storage for a home or guest house? Message us on WhatsApp with your household size or room count.