Survival kit: 10 reliable ways to get water in a crisis

During a crisis or conflict, some resources become harder to find. Water can quickly become scarce, and without secure access, your survival can be threatened within hours. However, there are ways to ensure a reliable supply of drinking water, even in extreme situations. We have compiled 10 solutions to help you build your survival kit.

1. Mechanical Filtration with Portable or Straw Filters

This is an effective solution for immediate access to drinking water. These ultra-light devices remove up to 99.99% of bacteria and parasites present in stagnant or contaminated water.

According to studies cited by health organisations, these filters significantly reduce the risk of severe infections during natural disasters. Easy to carry, filters with activated charcoal can be used directly in water sources such as rivers, lakes or even puddles.

2. Survival Kit: Chemical Treatment with Purification Tablets

In emergencies, water purification tablets are a particularly reliable solution. Usually based on chlorine or iodine, they neutralise viruses, bacteria and protozoa in contaminated water.

The British Red Cross often recommends carrying at least thirty tablets in an individual emergency kit to cover needs for several weeks. The chemicals effectively eliminate pathogens within 30 minutes, though they do not remove chemical pollutants.

3. Rainwater Collection Systems for Long-Term Autonomy

Installing a rainwater collector, or water butt, significantly increases your autonomy during a prolonged crisis.

• A 100-square-metre roof can capture about 60,000 litres of water per year in temperate UK regions.
• Water stored in tanks must be filtered before consumption to avoid biological contamination.

Humanitarian organisations recommend this method to ensure water access in unstable zones. This solution is also effective following natural disasters such as floods or severe storms. Additionally, these systems are easy to install at home year-round.

4. DIY Solar Distillation: Ecological and Autonomous

If you lack a power source, you can produce drinking water without electricity using solar energy.

• Place a sealed container in the sun: This technique evaporates and condenses water from damp soil or contaminated sources.
• It is a natural process that produces about one litre of pure water in six hours of direct sunlight.

The equipment required is simple: a transparent plastic sheet, a container and a few stones to create an emergency setup.

5. Storing Drinking Water in Airtight Containers

The most straightforward solution is to store large amounts of drinking water in advance. The UN High Commissioner for Refugees (UNHCR) recommends storing at least 20 litres of drinking water per person for a full week.

To ensure long-term preservation, use airtight, opaque containers resistant to light. Adding a treatment such as colloidal silver can help prevent bacterial growth during storage.

6. Boiling for Purification

Boil water for at least one minute to eliminate potentially deadly bacteria, viruses and parasites. While effective, this method is energy-intensive. If fuel is scarce, it may not be the most sustainable option. However, boiling is an ideal temporary solution whenever firewood or a portable stove is available.

7. Treatment with Activated Charcoal

Activated charcoal filters are highly effective. We offer this solution at Weeplow. They remove chemicals, toxins, viruses and PFAS, providing clean, safe drinking water.

Activated charcoal has been used by the military for decades to remove impurities, heavy metals and toxic solvents. In high-risk situations, water treated this way protects your health. The filter lasts two years, which is sufficient for most crisis scenarios.

Additionally, our filter requires no electricity, making it ideal for your survival kit and easy to transport!

8. Solar UV Disinfection (SODIS Method)

Exposing clear water in transparent plastic bottles to sunlight for six hours can destroy many pathogens. The SODIS method has been recommended by the WHO since the 1990s. While slow, its advantage is its zero cost and accessibility during prolonged instability.

9. Drilling an Emergency Well

Many areas in the UK have accessible groundwater reserves. These reserves are often less contaminated by surface pathogens than rivers or ponds. A basic well can provide a significant autonomous resource, though the water should still be combined with a secondary method like an activated charcoal filter for safety.

10. Condensation from Vegetation

In extreme survival situations, condensation from vegetation can provide a last resort. Covering leafy branches with a sealed plastic bag allows natural transpiration to produce condensed water. This technique yields limited amounts (less than 0.5 litres per day) but can be a life-saver in critical conditions.

Ensuring reliable access to drinking water should never be overlooked. Prepare your survival kit in advance so you are ready to secure your supply if the world turns upside down.

Want to upgrade your emergency preparedness? Discover our range of electricity-free gravity filters.