Introduction
Access to safe drinking water is an important part of emergency preparedness, camping, hiking, and other outdoor activities. A portable water filtration system can provide a practical way to treat water when a reliable supply of drinking water is unavailable.
However, portable filters vary significantly in their design, filtration capabilities, capacity, and intended use. Before buying one, it is important to understand what you need the system to do and where you plan to use it.
Understand What the Filter Removes
The first consideration should be the type of contaminants the filtration system is designed to reduce or remove. Different filters are designed for different purposes. Some can reduce bacteria and protozoa, while others may also target certain chemicals, sediments, or other contaminants.
Before purchasing, check the manufacturer’s specifications carefully. No single portable filtration system is guaranteed to make every type of contaminated water safe. If you are preparing for a specific emergency scenario, consider the likely water sources and contaminants you may encounter.
Consider the Filtration Method
Portable water filtration systems use different designs and technologies. Common options include pump filters, gravity-fed systems, squeeze filters, and straw-style filters. Each has advantages depending on the situation.
1. Gravity filters:
These can be useful when you need to process several litres of water without manually pumping.
2. Pump filters:
These allow users to draw and filter water directly from a source and can be useful for individual or small-group use.
3. Squeeze filters:
These are generally compact and lightweight, making them suitable for hiking and travel.
4. Straw-style filters:
These are highly portable and can be useful for personal drinking from appropriate water sources.
Think about whether you need to filter water for one person or an entire household.
Check the Flow Rate and Capacity
A filter’s flow rate determines how quickly it can produce treated water. This becomes particularly important when several people need water. Capacity also matters. Some filters are designed for relatively small quantities, while larger systems can process significantly more water before components need replacement. Check the manufacturer’s stated capacity and consider how frequently you would use the filter.
Think About Portability
The main advantage of a portable filtration system is its mobility. However, portability varies between products. For hiking or emergency evacuation, a lightweight and compact filter may be preferable. For home emergency preparedness, weight may be less important than capacity.
Consider:
1. Size:
Will it fit in your emergency kit or backpack?
2. Weight:
Can you comfortably carry it over long distances?
3. Storage:
Can you keep it protected when not in use?
4. Accessories:
Does it require additional containers, hoses, or adapters?
Consider Maintenance Requirements
A portable water filter needs proper maintenance to continue working effectively. Before buying, check how the filter is cleaned, whether components can be replaced, and how frequently cartridges or membranes need changing.
A system with readily available replacement components may be more practical for long-term preparedness than one that becomes difficult to maintain after its filter reaches the end of its service life.
Conclusion
Before purchasing, review the manufacturer’s performance claims, maintenance requirements, limitations, and instructions. A portable filter can be an important part of an emergency preparedness plan, but it should be used alongside safe water practices and appropriate storage supplies.