Inorganic High Risk
Arsenic
Skin damage, circulatory system problems, increased risk of cancer
Sources: Natural deposits, Mining runoff, Industrial discharge
Regulatory Limit
Zero EPA Limit (10 μg/L)
*Levels above the EPA limit are considered unsafe.
MCL Value
10 μg/L
Goal (MCLG)
0 μg/L
Violating Systems
2 nationwide
Affected Population
495,112 estimated
Avg Detected Level
5.0207 μg/L in affected systems
Health Risk Assessment
Exposure to Arsenic in drinking water is regulated because of its potential to cause skin damage, circulatory system problems, increased risk of cancer. The EPA has set the Maximum Contaminant Level (MCL) at 10 μg/L to protect public health.
Note: Long-term exposure above the MCL can significantly increase health risks. This contaminant is considered high priority due to its severe potential health impacts.
Detailed Health Effects
Skin damage, circulatory system problems, increased risk of cancer
Common Sources
1
Natural deposits 2
Mining runoff 3
Industrial discharge 4
Wood preservatives National Overview
Total Tests
57
Violations Found
2
Violation Rate
3.5%
Top States by Violations
Most Affected Systems
Treatment Methods
Ion exchange
Reverse osmosis
Activated alumina
Is this in your water?
Find out if your local water system has detected Arsenic.
Frequently Asked Questions
What is Arsenic and why is it in drinking water?
Arsenic is a inorganic contaminant. Common sources include: Natural deposits, Mining runoff, Industrial discharge, Wood preservatives.
What are the health effects of Arsenic in drinking water?
Skin damage, circulatory system problems, increased risk of cancer
What is the EPA limit for Arsenic?
The EPA Maximum Contaminant Level (MCL) for Arsenic is 10 μg/L.
How can I remove Arsenic from my water?
Effective treatment methods for removing Arsenic include: Ion exchange, Reverse osmosis, Activated alumina.
How do I test my water for Arsenic?
You can check your water system's annual Consumer Confidence Report for Arsenic levels, or use a certified home water testing kit. WaterQ provides the latest EPA test data for all public water systems.