Antimony
metal
Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder.
EPA regulatory status
Legal limit (MCL)
0.006 mg/L
Goal (MCLG)
0.006 mg/L
MCL 0.006 mg/L (6 ppb). MCLG = 0.006 mg/L.
Health effects
Long-term exposure is associated with increases in blood cholesterol and decreases in blood sugar.
This is general public-health information, not medical advice — consult your physician with any health concerns.
National violations
19,865
EPA's enforcement data (SDWIS/ECHO) records 19,865 violations of Antimony's rule nationally.
How to remove Antimony
distillation
NSF/ANSI 62
Frequently asked questions
What is Antimony?
Antimony is a metal regulated in US drinking water. Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder.
What is the legal limit for Antimony in drinking water?
MCL 0.006 mg/L (6 ppb). MCLG = 0.006 mg/L.
What health effects does Antimony have?
Long-term exposure is associated with increases in blood cholesterol and decreases in blood sugar.
How many violations of Antimony limits are on record nationally?
EPA's enforcement data (SDWIS/ECHO) records 19,865 violations of Antimony's rule nationally.
How do I remove Antimony from my water?
Filter technologies certified to reduce Antimony include: reverse osmosis (NSF/ANSI 58), distillation (NSF/ANSI 62). Look for a filter independently certified against the specific NSF/ANSI standard for this contaminant — general "reduces contaminants" marketing claims are not the same as a contaminant-specific certification.
Source: EPA National Primary Drinking Water Regulations · Data as of 2026-07-16