Water quality
Taste & odor compounds (geosmin, 2-MIB)
What it is
Natural compounds made by algae and soil bacteria in rivers and reservoirs that give water an earthy or musty taste. People can notice them at a few parts per trillion.
Your body
Geosmin and 2-MIB are considered aesthetic issues, not health risks.
Your home
They have no effect on plumbing, but they can make water and ice taste earthy.
Federal standard: No federal limit
Treatment options that can reduce it
Research & sources (1)
Maryland water systems that reported taste & odor compounds
- Howard County Department of Public WorksHoward · 2025 data
The information on this site is for general education only and is not medical advice. Talk with a qualified health professional about health concerns. Water treatment equipment performance depends on the system, its certification, and proper maintenance.
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