While some water purification tablets do last indefinitely if unopened (like iodine), others have a shelf life of five years or less. Cost of the Best Water Purification Tablets. If you’re purchasing ...

Water Purification Tablets vs Filter: The Upside of Filters. It turns out that while I had my back turned to the water filters, there were some pretty significant improvements to the technology. The ...

Water purification tablets are another choice to consider. They take little more than a few minutes to kill any harmful organisms in your water. The trick here is picking the right product.