What is Geosmin and MIB?

Geosmin and Methyl-Isoborneol (MIB) are naturally occurring compounds in surface water systems such as lakes and rivers. The compounds produce a very strong, earthy or moldy taste and odor.  In fact, Geosmin provides the characteristic earthy flavor in red beets and may be found in other fruits and vegetables providing a musty flavor. Geosmin can be detected by humans as low as 10 nanograms per liter. A nanogram is one millionth of a milligram. Or in other words, as small as one cent of ten billion dollars. These compounds are usually associated with aquatic plants in lakes and reservoirs during certain times of the year. The compounds can sometimes pass through a water treatment plant and become noticeable.

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1. Why does my drinking water have an earthy taste and odor?
2. What is Geosmin and MIB?
3. What are the effects of Geosmin and MIB?
4. What causes increased levels of Geosmin and MIB?
5. What can be done about Geosmin and MIB?
6. Is the water safe to drink?
7. What is being done to address the issue?
8. If a taste and odor issue occurs, how long until the issue is resolved?
9. What can I do to improve the taste and odor of the water?
10. Who do I contact if I have questions or concerns about my water?