Minerals
Potassium
What it is
A naturally occurring mineral and essential nutrient, sometimes reported as an unregulated substance.
Your body
Potassium at drinking-water levels is a very small part of normal dietary intake. There is no federal drinking water limit.
Your home
Potassium does not affect plumbing.
Federal standard: No federal limit
Treatment options that can reduce it
Research & sources (1)
Maryland water systems that reported potassium
- City of FrederickFrederick · 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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