Best Survival Water Filtration System

Finding the best survival water filtration system for a survival situation can be difficult as it's hard to predict what will happen to the water supply. In the case of a nuclear strike, you'll be dealing with gamma radiation while if it's anything to do with disease you'll need to be filtering out the bacteria and viruses to keep you and your family safe.

In either case, you should start with enough bottled water to see you through the first few days, but you will need a long term system in place at your permanent base camp.

Key Features

When you're trying to work out the best survival water filtration system for your survival party, you should look out for brands that have the following key features:

  • Durability - above all else, the best survival water filtration system will last for 50,000 liters, which will be more than enough to keep you in clean water, working on the basis of two liters of drinking water and two liters of cooking and cleaning water per adult per day. Most high quality systems will also come with replacement filters, so do some research about how much these cost and how long they last for on average.
  • Easy to clean - in a survival situation, it's highly unlikely that you would be able to get hold of any further replacement filters, meaning that you'll eventually run out. However, you can avoid this scenario by finding a filtration system that allows you easy access to clean the filter parts. You'll need to stock up on wire wool and sterilization fluid but these will come in useful for other parts of your survival life.
  • Small filters - the size of the filters will dictate how effective your filtration system is and as a general rule, the more you pay, the better the filter will be. Anything that offers filtration under one micron will be good enough to filter out all diseases, but if you're concerned about radiation in your water, look for systems that go under 0.1 microns.

Best Buys

With these key features in mind, your options for the best survival water filtration system become narrower. For the best buys, try looking at the following brands:


Berkey filtration systems are among the more expensive on the market, with a basic model providing clean water for a group of four adults coming in around $300, not including replacement filters. However, Berkey has a reputation for high quality and durability.


Katadyn's main selling feature is a multi step approach. The system can be used as a standalone water filter, but also comes with day filters, bottles and long term storage tanks that allow you to be flexible between staying at camp and day trekking.


Seychelle are relatively new on the market and specialize in dedicated survival filtration systems. The larger models will hold 50 gallons at a time and the filters are narrow enough to remove any diseases and some forms of radiation.

Having a reliable source of clean water will be essential for a survival situation, so be sure to talk to other preppers about the best survival filtration system that they know about. As with all parts of your survival preparations, you'll be restricted by the size and the cost.

You need to make sure that you will be able to transport your filtration system to your permanent base camp ahead of time, so it needs to be carryable by members of your team. You should aim to spend as much as possible, as you will always get what you pay for.

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