Why does stored water develop an off-taste over time?

Causes of Off-Taste in Stored Water

The primary cause of off-taste in stored water is the growth of microorganisms, particularly bacteria, mold, and yeast. These microorganisms feed on organic matter present in the water, such as dead cells, sediment, and other contaminants, producing compounds that impart an unpleasant taste and odor. In a typical 55-gallon drum, the ideal water storage container for preppers, water starts to degrade within 30 days, with noticeable off-odors appearing after 60 days.

Factors Contributing to Off-Taste Development

Several factors contribute to the development of off-taste in stored water, including water temperature, pH levels, and contamination from the storage container itself. For instance, water stored at temperatures between 50°F and 70°F (10°C and 21°C) is more susceptible to bacterial growth than water stored at temperatures below 40°F (4°C) or above 80°F (27°C). Moreover, a pH level outside the range of 6.5 to 8.5 can also contribute to off-taste development, as extreme pH levels can facilitate the growth of microorganisms.

Best Practices for Maintaining Fresh-Tasting Stored Water

To maintain fresh-tasting stored water, it is essential to follow best practices such as regular water testing, storage in clean and sanitized containers, and proper water treatment before storage. For example, storing water in a container with an iodine or chlorine treatment can help prevent bacterial growth. Additionally, changing the water in storage containers every 6-12 months can help prevent the accumulation of contaminants and off-taste compounds. By implementing these measures, preppers can ensure that their stored water remains safe and palatable for extended periods.