Benzene
volatile organic compound
Discharge from factories; leaching from gasoline storage tanks and landfills.
EPA regulatory status
Legal limit (MCL)
0.005 mg/L
Goal (MCLG)
0 mg/L
MCL 0.005 mg/L (5 ppb). MCLG = 0.
Health effects
A known human carcinogen. Long-term exposure can cause anemia, a decrease in blood platelets, and an increased risk of cancer (leukemia).
This is general public-health information, not medical advice — consult your physician with any health concerns.
National violations
51,220
EPA's enforcement data (SDWIS/ECHO) records 51,220 violations of Benzene's rule nationally.
How to remove Benzene
Frequently asked questions
What is Benzene?
Benzene is a volatile organic compound regulated in US drinking water. Discharge from factories; leaching from gasoline storage tanks and landfills.
What is the legal limit for Benzene in drinking water?
MCL 0.005 mg/L (5 ppb). MCLG = 0.
What health effects does Benzene have?
A known human carcinogen. Long-term exposure can cause anemia, a decrease in blood platelets, and an increased risk of cancer (leukemia).
How many violations of Benzene limits are on record nationally?
EPA's enforcement data (SDWIS/ECHO) records 51,220 violations of Benzene's rule nationally.
How do I remove Benzene from my water?
Filter technologies certified to reduce Benzene include: activated carbon (NSF/ANSI 53), reverse osmosis (NSF/ANSI 58). 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