How Much Emergency Drinking Water Should You Store in the Lower Mainland?

Fall on the West Coast brings wind, power blips, and the odd boil-water advisory that turns a normal week into a scramble. Most households keep a flashlight and a few cans of soup. Far fewer know how much drinking water they actually need, or how many 5-gallon purified bottles that works out to for a family or a small office.

This guide uses official PreparedBC numbers, simple bottle math for homes and workplaces, and a practical way to keep a rotating supply. Taj Water delivers from our Port Coquitlam hub across the Tri-Cities and Metro Vancouver. Order online, or ask about bulk totes for a larger site.

What PreparedBC recommends for water

PreparedBC, the Province of B.C.'s public preparedness program, asks households to plan for staying put with an emergency kit and leaving quickly with a grab-and-go bag. On water:

• Store at least four litres of water per person per day for drinking and sanitation
• Aim for a minimum three-day to one-week supply
• Some people may need more, including children, people who are nursing, or anyone who is ill
• Hot weather can roughly double water needs
• Pets need about 30 mL per kg of body weight per day (a small dog or cat is often at least half a cup)

PreparedBC also notes that purchased bottled water for kits should stay in original containers, in a cool, dark place that is easy to reach, and should not be opened until you need it. That fits sealed 5-gallon bottles kept off a sunny patio and away from heaters or chemicals. Use their kit list as your checklist; use the bottle math below to turn litres into an order you can rotate.

Translate litres into 5-gallon bottles

A 5-gallon purified drinking water bottle holds about 19 litres. That single fact makes planning much easier.

Rough takeaway for a family of four: one 5-gallon bottle covers about one day. A three-day kit is roughly three bottles; a week is roughly six. Round up if anyone may need extra, or if you want a cushion for guests or cooking. If your office already drinks from a dispenser, a storm buffer is mostly extra sealed bottles on a shelf.

Home kit: where to store and how to rotate

You do not need a bunker. You need water you can reach in the dark.

Good spots: a hall closet, spare-room shelf, or cool garage corner away from gasoline and paint; low enough for one adult to lift safely; out of direct sun and away from furnaces.

Skip: attics that bake in summer, under-sink cabinets next to cleaners, and leaving bottles in a vehicle for weeks (heat and freeze cycles are hard on plastic and seals).

Rotation tip: treat emergency water like pantry staples. When you order a regular delivery, pull the oldest sealed bottles into everyday use (or swap empties on your next drop) and put the newest ones at the back. Label the delivery month. Many households rotate when the clocks change. Twice a year is enough for most kits if you also drink from the same supply on a schedule.

If you use a water dispenser at home, keep one or two sealed spare bottles off the cooler until you need them. The bottle on the dispenser is working stock; the sealed ones are for the outage.

Small offices and shops

A Port Coquitlam clinic, a Coquitlam coworking suite, or a Vancouver storefront has the same maths as a household, multiplied by headcount. Ask how many people could be at work for a full day if transit stalls; whether you need water only for drinking or also for handwashing when building supply is interrupted; and whether a multi-day disruption would stop you from serving customers.

For many small teams, a three-day buffer of sealed 5-gallon purified bottles next to usual dispenser stock is enough. Larger floors, warehouses, or multi-day events tip into bulk water totes, which supply purified water in hundreds of litres and are quoted for your site. Construction trailers and food-service prep often prefer totes. If your office already gets cups with the water order, stash an unopened sleeve with the emergency bottles.

Distilled water: appliance backup, not the drinking kit

Taj Water also delivers 5-gallon distilled bottles for appliances such as espresso machines, steamers, irons, and batteries. You don't need distilled water for everyday drinking. For storm-season drinking and sanitation kits, stick with 5-gallon purified drinking water. Keep distilled on the appliance shelf if needed; keep purified in the emergency stack.

Why sealed delivery bottles beat a last-minute store run

When a windstorm warning hits the Lower Mainland, grocery shelves empty fast. Pre-positioned bottles avoid that rush, which helps walk-ups, shops that need volume without a cargo van, and anyone who wants reusable bottles with a bottle deposit on the first order and empties swapped later. Schedules are weekly, bi-weekly, or monthly with no contracts. Pause, skip, or change anytime.

Taj Water is locally owned, based at 1770 McLean Ave Unit 7, Port Coquitlam, and runs its own routes and fleet, with no third-party couriers. When you call, you talk to a real person. We serve fourteen Lower Mainland cities, including Port Coquitlam, Coquitlam, and Vancouver, plus the broader Tri-Cities and Metro Vancouver area. Delivery is usually arranged for this week; next-day slots are often available in most areas. Call or message us to confirm what is open for your address.

Storm-season checklist

1. Count people (and pets) who would shelter at home or stay at the office.
2. Multiply by 4 litres per person per day, then by 3 to 7 days.
3. Divide by about 19 litres per 5-gallon bottle; round up.
4. Add a bottle or two if anyone may need more, or for cooking buffer.
5. Store sealed bottles cool, dark, and accessible; label the month.
6. Set a reminder to rotate, or fold rotation into your regular delivery.
7. Offices: decide whether sealed bottles are enough or whether a bulk tote quote makes more sense.
8. Bookmark PreparedBC's emergency kit page for the full non-water list (food, radio, first aid, documents).

FAQ

How many 5-gallon bottles does a family of four need for one week?

About six bottles at PreparedBC's four litres per person per day (roughly 16 litres daily, or about 112 litres for seven days). Round up for guests, pets, or cooking.

Is four litres a day only for drinking?

No. PreparedBC's four litres covers drinking and sanitation. In hot weather, or if someone is ill or nursing, plan for more. Pets are separate, at about 30 mL per kg of body weight per day.

Can our office use the same bottles we already get on delivery?

Yes. Keep extra sealed 5-gallon purified bottles in reserve and rotate them into normal use. The bottle on the dispenser is working stock; the sealed spares are your outage buffer.

When should a business switch from bottles to bulk totes?

When headcount, shift length, or process water makes bottle counts awkward, often a dozen-plus bottles for a short outage. Bulk water totes are quoted for purified or distilled supply in larger volumes; start with our contact page.

Do you deliver to Port Coquitlam and nearby cities?

Yes. We deliver from Port Coquitlam across the Tri-Cities and fourteen Lower Mainland cities. See Port Coquitlam and Coquitlam, or order 5-gallon purified bottles.

What if we only want a one-time stock-up?

That is fine. Schedules are flexible (weekly, bi-weekly, or monthly), with no contracts. Pause, skip, or change anytime. A bottle deposit applies on the first order; empties are swapped on later deliveries.

Ready to stock your kit?

Storm season is easier when the water is already on the shelf. Browse 5-gallon purified drinking water, see all products and dispensers, or request a bulk tote quote. Questions? Contact us or call (778) 504-7880, open daily 9 AM–9 PM. More basics are on our FAQ page.

Taj Water Team