Metals
Nickel
What it is
A metal found naturally in soil and rock, which can also leach from some metal pipes and fittings.
Your body
The most common health effect of nickel is an allergic skin reaction in sensitive people. Some water systems still monitor nickel, but it does not currently have an enforceable federal drinking water limit.
Your home
Nickel can be a sign of corrosion in metal plumbing components.
Federal standard: No current federal MCL
Treatment options that can reduce it
Research & sources (2)
Maryland water systems that reported nickel
- Harford County Department of Public WorksHarford · 2025 data
- Town of TrappeTalbot · 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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