Article 6 in series
When the taps run dry, everything else becomes secondary.
We have spent five articles building your household’s resilience layer by layer — understanding TotalDefence, managing fear, staying warm, keeping the lights on, and storing portable power. Today, we arrive at the one resource that cannot be postponed, substituted, or worked around for more than a few days.
Water.
Not food. Not electricity. Not communications. Water.
A healthy adult can survive three weeks without food. Without water, that window collapses to roughly three days, and cognitive decline begins far sooner. In any serious crisis — power grid failure, infrastructure sabotage, extreme weather, or armed conflict — the water supply chain is among the first systems to be stressed. Modern municipal water systems depend on electric pumps. When the grid goes, pressure drops. When pressure drops, distribution fails. When distribution fails, the taps slow to a trickle and then stop entirely.
This is not a hypothetical. Ukrainian civilians in cities with partial or total utility collapse have described queuing for hours at distribution points, rationing every cup, and making difficult decisions about what gets washed and what does not. Polish civil preparedness instructors — drawing on wartime historical experience and contemporary conflict analysis — treat water security as the non-negotiable foundation of any serious household plan. The Danish civil emergency guide Forberedt på kriser calculates the minimum requirement at 3 liters per person per day for drinking and basic food preparation alone.
Norway’s own authority on the topic, Direktoratet for samfunnssikkerhet og beredskap (DSB), recommends storing approximately 20 liters of drinking water per person to cover the minimum requirements for one week. For a family of four, that is 80 liters. It sounds like a lot. It is, in fact, a very manageable amount — if you plan for it.
Why the tap might stop
To understand why water storage matters, it helps to understand how Norwegian municipal water infrastructure actually works. The system relies on a chain of dependencies: treatment plants, pumping stations, distribution pipes, and pressure maintenance — all of which consume electricity. Norway’s electricity grid is robust and predominantly hydropower-based, but it is not invulnerable. Extreme weather events, cyber incidents, physical infrastructure damage, or prolonged grid disruption in one region can cascade into water supply failures even in areas that appear otherwise unaffected.
The DSB’s own guidance is clear on this point: a failure of the electricity supply can cause domestic water supplies and sewage systems to stop functioning normally. This is not an exotic worst-case scenario — it is built into the authority’s baseline crisis planning assumptions.
Beyond electricity, there are other failure modes. Pipe contamination — from flooding, ground movement, industrial accidents, or deliberate sabotage — can render running water unusable even when pressure is maintained. In such cases, authorities issue “do not use” or “boil water” advisories. Having stored water at home means you have a buffer while the situation is clarified. It means you are not making panicked decisions about whether to drink from a river or wait for official guidance that may take hours to arrive.
The 20-liter baseline, and what it actually covers
DSB’s 20 liters-per-person recommendation is the minimum. Understanding what minimum means is important so you can calibrate upward based on your household’s actual needs.
The 3 liters per day specified by Danish guidance (which aligns with international emergency planning standards) covers drinking water and minimal food preparation. It does not cover thoroughly washing hands after using the toilet, washing dishes, bathing, even briefly, laundry, or caring for pets or infants. It does not account for increased needs during physical exertion, illness, high temperatures, or breastfeeding.
A more realistic planning figure — one that allows for basic hygiene and drinking — is 5 to 7 liters per person per day. That means a family of four, properly supplied for seven days at a comfortable, rather than survival, level, needs somewhere between 140 and 200 liters of storage. That is not unreasonable, and it does not require a dedicated storeroom. It requires planning and the right containers.
If true 7-day full-comfort storage is not achievable in your living situation, start with the minimum. 20 liters per person. Get that done. Then expand incrementally.
Choosing and preparing your containers
The container question is where most households stumble — not from lack of resources, but from lack of information. A few principles make all the difference.
Use food-grade containers only. This means containers explicitly rated for food or beverage storage — not repurposed paint buckets, industrial containers, or any vessel that has held non-food substances. Plastics marked HDPE (often labeled with recycling symbol #2) are the standard for water storage. They are durable, widely available, and do not leach harmful substances into water stored over time. Look for containers sold specifically as water storage canisters at outdoor, camping, or emergency preparedness retailers. In Norway, these are available at Clas Ohlson, Jula, Biltema, and most well-stocked sports retailers, typically in the 10 to 30 liter range, priced from approximately 100 to 400 NOK depending on size and quality.
Multiple smaller containers outperform one large one. A single 80-liter drum is difficult to move, impossible to lift when full, and represents a single point of failure. Four 20-liter containers give you flexibility — you can move them room to room, transport one to a neighbor, or use one while the others remain sealed. Five to six-liter containers with handles are the most practical for households with stairs, older residents, or limited storage space. The Polish “Cywil na Wojnie” guide makes this point specifically: a 5-liter bottle you can carry up eleven flights of stairs without a lift is infinitely more valuable than a 30-liter drum you cannot move.
Prepare containers before filling. DSB’s guidance specifies a two-step process. First, wash the container thoroughly with dish soap and rinse completely. Then fill with water, add two caps of household bleach per 10 liters, and let it stand for at least 30 minutes before emptying and rinsing again. This sanitization step removes residue, biofilm, and any contamination that might compromise your stored water over time.
Fill completely and seal tightly. Air in the container allows bacterial growth. Fill to the brim, seal, and store in a cool, dark location away from direct sunlight. Properly sealed, clean tap water in a clean container can remain safe for drinking for years. DSB confirms this explicitly.
What to do when stored water runs out
Storage buys you time. But a serious crisis may extend beyond your reserve. Here, the picture becomes more complex, and some clear principles apply.
Your home water heater is a reserve. Most Norwegian households have a hot water boiler — typically 200-300 liters. In a crisis where the water supply has been cut but not contaminated, this represents a significant volume of stored water. To access it, switch off the heater at the power supply first, then drain it from the bottom valve. DSB notes that this water should not be used for drinking, but it is appropriate for hygiene, flushing toilets, and washing.
Rainwater and surface water require caution. You can collect water from roof runoff or nearby streams and rivers for hygiene purposes, but not for drinking without treatment. In the event of nuclear fallout or chemical contamination in your area, DSB advises seeking official guidance before using any collected water. Surface water in urban areas — rivers, ponds, urban drainage — is typically contaminated with bacteria, heavy metals, agricultural runoff, and pharmaceutical residue. The Polish “Cywil na Wojnie” guide is emphatic: drinking contaminated water to avoid dehydration typically causes vomiting or diarrhea and accelerates dehydration. It is counterproductive.
Treatment options, in order of reliability: Boiling is the most accessible method and effectively kills biological contaminants. One minute of rolling boil is sufficient; three minutes at higher altitudes. Purification tablets — widely available at outdoor stores — provide a chemical treatment option when boiling is not possible. Filter pitcher jugs with replaceable cartridges (widely sold in Norway at Clas Ohlson and grocery chains, from around 200 NOK) can handle tap water contaminated with pipe sediment, rust, and chlorine byproducts — effective in scenarios where the municipal system is operating but degraded. They are not suitable for heavily contaminated natural water.
One critical warning, drawn from Polish civil defense literature and worth repeating clearly: never use gas mask canisters or military filter elements to purify drinking water. Gas mask activated carbon is chemically treated with toxic heavy-metal compounds designed to bind chemical warfare agents — not to make water safe. These compounds leach into filtered water. The consequences for kidney and liver function are serious.
Know your neighborhood’s public distribution points. In an extended emergency, municipalities operate water distribution trucks (vannbil in Norwegian). Knowing in advance where your local distribution points are — and having appropriate containers ready to transport water from them — is part of a complete household water plan. The right container for distribution point collection is a 5 to 10-liter jug with a secure handle. Note the location of your nearest public building, school, or designated civil protection area.
Hygiene when water is scarce
The second-order challenge in a water crisis is hygiene. The DSB guidance on this topic is precise and practical. When the water supply is cut off for an extended period:
Pay close attention to hand hygiene after using the toilet and before preparing food. Keep wet wipes, hand sanitizer, and disposable gloves at home. These are low-cost items that matter enormously when clean running water is unavailable. If sanitation fails and toilets cannot be flushed, DSB recommends improvising with doubled carrier bags placed over the toilet seat or a bucket — sealed and disposed of in regular waste containers.
The Polish “Cywil na Wojnie” guide makes a point that is easy to overlook in peacetime: maintaining hygiene standards is not merely a health measure. It has a direct and documented effect on morale, group cohesion, and psychological resilience. In prolonged crises, people who maintain personal hygiene — even minimally — cope significantly better than those who abandon it. This is a lesson from siege conditions, disaster relief contexts, and military field operations alike.
For apartment dwellers and housing associations
A common objection to water storage in Norway’s urban context is the lack of space. Most apartments in Oslo, Bergen, or Drammen do not have basements, storage units, or spare rooms. The concern is real, but the solutions are practical.
Smaller containers fit under kitchen worktops, inside wardrobes, under beds, and in bathroom storage units. A row of five 5-liter containers stacked two high takes up approximately the same floor space as a small vacuum cleaner. You almost certainly have that space somewhere.
For larger collective solutions, DSB and the Norwegian housing cooperative movement (borettslag system) actively encourage housing association committees to consider establishing shared emergency water reserves in communal areas— such as basement storage rooms, communal storerooms, or building entrances. If your borettslag does not yet have an emergency preparedness plan, raising the question of water storage at the next board meeting is both legitimate and increasingly expected.
Your action plan this week
The barrier to water preparedness is not knowledge. It is not costly. It is not space. It is the absence of a specific, concrete first step.
Here is yours: this week, calculate how many people live in your household. Multiply by 20. That is your minimum target. Divide by the container size you will buy — 5 liters is manageable and versatile — and you know exactly how many containers to purchase. Order them, or pick them up at Biltema, Clas Ohlson, or your nearest sports store. Fill them using DSB’s preparation protocol. Store them somewhere cool and dark. Write the fill date on the outside with a marker.
That is it. That is a week of water security for your family. It costs between 150 and 500 NOK, depending on container choice. It takes an afternoon.
The tap works today. It will not always work. The gap between those two states is measured in hours — not weeks.
Views expressed are my own.
Next in the series — Article 7: Eating Through a Crisis. We examine food storage strategies for Norwegian households: what to stock, what not to stock, how to think about calorie density, shelf life, and cooking without power. Practical, affordable, and grounded in what actually sustains people when supply chains break.
I write about Total Defense, civil preparedness, and resilience from a Nordic perspective. Follow for weekly posts. Questions, challenges, and additions are welcome in the comments.
References: “Cywil na Wojnie” by Kaczor, Kafir
This work, excluding photos, is licensed under a Creative Commons Attribution 4.0 International License.