First Water Storage Setup for Apartments in Europe: Containers, Rotation, Legal
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Quick answer: water storage for apartments
You do not need a basement or garden to store water. A two-week supply for one person fits in a closet, under a bed, or on a balcony. The key is choosing food-grade containers that stack, seal, and do not leach.
Minimum baseline: 14 litres per person (2 L/day × 7 days). Resilient target: 56 litres per person (2 L/day × 14 days).
Apartment constraints — weight, space, landlord rules, no outdoor tap — mean you need compact, portable, food-safe solutions. This guide covers the best options available in Europe, with direct links to equipment that works in small spaces.
Why store water in an apartment?
Municipal supply interruptions happen: pipe bursts, contamination events, pump failures, maintenance shutdowns. In 2023, over 200,000 households in Germany alone experienced unplanned water outages longer than 24 hours. A small reserve buys you time, hygiene, and cooking ability without panic buying.
Self-sufficiency is not about doomsday. It is about not being caught without options when the tap runs dry for 48 hours.
How much water do you actually need?
| Scenario | Litres/person/day | 7 days (1 person) | 14 days (1 person) |
|---|---|---|---|
| Drinking + cooking only | 2–3 L | 14–21 L | 28–42 L |
| + basic hygiene (sponge bath) | 5–7 L | 35–49 L | 70–98 L |
| + toilet flushing (bucket) | 10–15 L | 70–105 L | 140–210 L |
Start with the 14 L baseline. That fits in two 10 L jerrycans or one 20 L container. Scale up as space and budget allow.
Container types compared for apartments
| Type | Sizes | Stackable? | Weight (full) | Best for | EU Availability |
|---|---|---|---|---|---|
| HDPE jerrycan (UN certified) | 5, 10, 20 L | Yes (flat sides) | 5–20 kg | Closet, under bed, balcony | High — camping, marine shops |
| Collapsible water bag | 10, 20, 50 L | No (store flat when empty) | 10–50 kg | Occasional use, bug-out bag | Medium — outdoor retailers |
| Food-grade drum (blue, 60–220 L) | 60, 120, 220 L | Yes (with pallet) | 60–220 kg | Balcony, garage, cellar | High — IBC totes, food industry |
| Water brick (3.5 L modular) | 3.5 L × 4–12 | Yes (interlock) | 3.5 kg each | Under bed, shelf, mobile | Medium — US import, some EU stock |
| Bathtub bladder (WaterBOB) | 100–200 L | N/A (single use) | 100–200 kg | Emergency fill before outage | Low — US import, EU alternatives |
Top picks for EU apartment dwellers
1. 20 L HDPE jerrycan — the workhorse
Flat-sided, stackable, UN-certified for drinking water, fits in a 60 cm deep closet. Two give you 40 L (20 days baseline for one person). Look for blue food-grade HDPE with wide neck for cleaning.
Affiliate: 20 L food-grade jerrycan (UN certified) — €18–25
2. 10 L collapsible water container — for tight spaces
Folds flat when empty (2 cm thick). Good for balconies or occasional emergency fill. Not for permanent storage — plastic fatigues over years.
Affiliate: 10 L collapsible water bag (BPA-free) — €12–18
3. 60 L food-grade drum — balcony standard
If you have a covered balcony, a 60 L drum on a pallet gives 30 days baseline. Blue PE, UV-resistant, screw cap with gasket. Needs dolly to move when full (60 kg).
Affiliate: 60 L food-grade water drum (UV-resistant) — €45–60
4. Water bricks (3.5 L) — modular under-bed storage
Interlocking bricks stack 4-high in 35 cm height. 12 bricks = 42 L in 60×40×35 cm. Expensive per litre but maximizes dead space.
Affiliate: 3.5 L Water Brick (set of 4) — €55–70
5. IBC tote (1000 L) — only if you have garage/cellar
1000 L = 500 days baseline. Used food-grade IBCs (e.g. from syrup, oil, juice) cost €80–150. Must verify previous contents and clean thoroughly. Overkill for most apartments.
Where to put it in a typical EU flat
| Location | Max practical volume | Container fit | Notes |
|---|---|---|---|
| Closet floor | 40–80 L | 2–4 × 20 L jerrycans | Check shelf load rating |
| Under bed (30 cm clearance) | 42–84 L | 12–24 × Water Bricks or 4×20 L | Use bed risers if needed |
| Balcony (covered) | 60–200 L | 60 L drum or 200 L drum | UV cover, insulated jacket in winter |
| Kitchen cabinet (low) | 10–20 L | 2×10 L collapsible | Near tap for rotation |
| Hallway dead space | 20–40 L | 2×20 L jerrycans | Decorative cover/box |
Rotation & maintenance schedule
- Every 6 months: Empty, rinse, refill with fresh tap water. Mark date on container.
- Every 12 months: Inspect seals, caps, plastic for cracks/UV damage.
- Before known risks: Storm, heatwave, maintenance notice — top off all containers.
- Chlorine note: Municipal tap water contains 0.2–0.5 mg/L chlorine. It keeps water safe for 6–12 months in sealed food-grade containers. No need to add bleach.
Water treatment (if source is uncertain)
If you must fill from a non-municipal source (rainwater, well, transported):
- Pre-filter: Cloth or coffee filter for sediment.
- Disinfect: 2 drops unscented bleach (5% NaClO) per litre, wait 30 min. Or chlorine dioxide tablets (affiliate) — €15/50 tabs.
- Filter: Gravity ceramic filter (affiliate) — €80–150, removes bacteria, protozoa, some chemicals.
- Boil: Rolling boil 1 min (3 min >2000 m altitude).
Quick setup: 30-minute apartment water reserve
- Buy: 2 × 20 L jerrycans (€40) + test strips (€12).
- Wash containers with mild soap, rinse thoroughly.
- Fill from kitchen tap (cold water line). Leave 2 cm headspace.
- Cap tightly. Label with fill date: “TAP WATER — 2026-06-11 — ROTATE BY 2026-12-11”.
- Place in closet/under bed. Done.
Total cost: ~€55. Time: 30 minutes. Coverage: 40 L = 20 days for one person.
FAQ
Can I store water in plastic bottles from the supermarket?
Short-term only. PET bottles degrade, leach antimony over time, and are not designed for refilling. Use once, recycle. Invest in HDPE jerrycans for multi-year storage.
Does water expire?
Water does not “expire” but it can grow algae, absorb plastic compounds, or lose chlorine residual. Rotate every 6–12 months. If it smells, tastes, or looks off — discard.
How do I hide containers in a small flat?
Use a fabric storage cube, IKEA SKUBB boxes, or build a simple wooden bench with hinged lid. Water bricks look like books on a shelf. Camouflage is part of the system.
What if the power goes out and I need water for toilet flushing?
Bucket flush: pour 5–8 L directly into bowl. One 20 L jerrycan = 2–4 flushes. For longer outages, consider a composting toilet (affiliate) or camping toilet with waste bags (affiliate).
Can I use rainwater on my apartment balcony?
Yes, with a balcony rain diverter (affiliate) and food-grade barrel. Filter first flush. Best for plants, not drinking without treatment.
Next step
Start with the 30-minute setup above. Then read Best Water for Self-Sufficient Gardens to understand how water quality affects your plants, and check the Recommended Gear page for water testing kits and storage gear.
Join the newsletter for the free 10 Practical First Steps Toward Self-Reliance checklist — water storage is step #1.
Balcony-specific: For rainwater harvesting on balconies, read Rainwater Harvesting for Balconies & Small Spaces.