Without food, a person can survive for more than 30 days but without water, a person can barely make it in five days. That is why it is important to make sure that boats have good supply of water that is clean, pure and fresh.
Just because you are sailing in seas that your water should taste of bilge or literally smell fishy. A lot of modern water filters for small, medium and large boats are available from various manufacturers. Having good water filters will help you clean the water of many of its impurities before you actually use it. After all, you want yourself and your family or other companions healthy and well during and after your sail.
You can start by using a pre-filter such as General Ecology's Dockside Pre-Filter to get rid of dirt and sediment in freshwater tanks. More nasty contaminants such as parasitic cysts, solvents, and other substances would require more than pre-filters.
Assuming that you have done the necessary work to make sure that you have clean source of water to begin with, you need a high-quality water filter between the tank and the outlets. As in other products, there is a wide array of water filters in the market. These include ultraviolet water sterilizers, sediment filters, taste filters, softeners, odor filters, and the Structured Matrix technology that combine the capabilities of several types of filters.
The Seagull IV System, for instance, boasts of a submicron filter layer that can remove all visible particles as well as chlorine, organic chemicals, specific pesticides, herbicides, solvents, taste, smell, and color. The filter uses electrokinetic attraction during its final filtering layer to remove small positively charged particles of the larger contaminants by attracting them to the negatively charged surface of the filter to remove colloids and other even smaller particles than those removed by the microfine filtration layer.
It is also very important to have your water filter on board checked for periodic maintenance, at least once a year.
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