Inorganic Low Risk
Barium
Increased blood pressure
Sources: Natural deposits, Mining, Refining
Regulatory Limit
Zero EPA Limit (2 mg/L)
*Levels above the EPA limit are considered unsafe.
MCL Value
2 mg/L
Goal (MCLG)
0 mg/L
Violating Systems
4 nationwide
Affected Population
1.2M estimated
Avg Detected Level
1.1786 mg/L in affected systems
Health Risk Assessment
Exposure to Barium in drinking water is regulated because of its potential to cause increased blood pressure. The EPA has set the Maximum Contaminant Level (MCL) at 2 mg/L to protect public health.
Note: Long-term exposure above the MCL can significantly increase health risks.
Detailed Health Effects
Increased blood pressure
Common Sources
1
Natural deposits 2
Mining 3
Refining National Overview
Total Tests
50
Violations Found
4
Violation Rate
8.0%
Top States by Violations
Most Affected Systems
Treatment Methods
Ion exchange
Reverse osmosis
Lime softening
Is this in your water?
Find out if your local water system has detected Barium.
Frequently Asked Questions
What is Barium and why is it in drinking water?
Barium is a inorganic contaminant. Common sources include: Natural deposits, Mining, Refining.
What are the health effects of Barium in drinking water?
Increased blood pressure
What is the EPA limit for Barium?
The EPA Maximum Contaminant Level (MCL) for Barium is 2 mg/L.
How can I remove Barium from my water?
Effective treatment methods for removing Barium include: Ion exchange, Reverse osmosis, Lime softening.
How do I test my water for Barium?
You can check your water system's annual Consumer Confidence Report for Barium levels, or use a certified home water testing kit. WaterQ provides the latest EPA test data for all public water systems.