Water storage and filtration

Store enough for the first days, then filter. Here's how much, how, and what I'd buy.

Water calculator

How much to store, and when to switch to filtering.

WHO'S IN THE HOUSE
Adults & teens
2
Kids 4 to 12
2
Little ones 1 to 3
0
Dogs
1
FOR HOW LONG
TOTAL WATER
51 L
17 L a day

4 L per person, 1 L per dog.

STORE
3 jugs
Reliance 23 L

Enough for the whole plan.

FILTER
0 L
to filter after day 3

A gravity filter handles this easily.

BACKUP
24
drops of bleach

For drinking water, if the filter fails. Clear water only.

Water storage reviews

Every way to store water, compared on cost per litre and what it's actually like to live with.

BEST BANG FOR BUCK
Reliance Desert Patrol 23 L
$29.22 · $1.27/L

Good: Tough, stackable, has a spout. Easy to carry when full.

Watch for: Heavy at 23 kg. Rotate every 6 months.

See on Amazon.caRead the review
CHEAPEST PER LITRE
Bathtub bladder 375 L
$60 · $0.16/L

Good: Huge capacity for the price. Folds away.

Watch for: Single use. Only works if you fill it before the water goes off.

See on Amazon.caRead the review
GRAB-AND-GO
Cases of bottled water
Review coming

Good: Sealed, portable, easy for go-bags.

Watch for: Lots of plastic and the most expensive per litre.

See on Amazon.caRead the review
BULK STORAGE
55-gallon (208 L) barrel
Review coming

Good: Lots of water in a small footprint.

Watch for: Can't be moved full. Needs a pump to get water out.

See on Amazon.caRead the review

More reviews comingWater filter pitchers · Countertop distiller · Whole-house sediment filter · Under-sink reverse osmosis

How-tos

Step-by-step guides for treating water and building your own filters.

Boil it
HOW TO FILTER
Boil it
Read the how-to
Gravity filter
HOW TO FILTER
Gravity filter
Read the how-to
Bleach it
HOW TO FILTER
Bleach it
Read the how-to
Two-bucket ceramic filter
BUILD YOUR OWN
Two-bucket ceramic filter
Read the how-to
Sand and charcoal pre-filter
BUILD YOUR OWN
Sand and charcoal pre-filter
Read the how-to
Rain barrel setup
BUILD YOUR OWN
Rain barrel setup
Read the how-to
Toilets and hygiene without running water
HOW TO FILTER
Toilets and hygiene without running water
Read the how-to