Microbial Medium Risk
Legionella
Legionnaires disease (pneumonia-like)
Sources: Water cooling towers, Hot tubs, Plumbing systems
Regulatory Limit
Zero EPA Limit (0 organisms/L)
*Levels above the EPA limit are considered unsafe.
MCL Value
0 organisms/L
Goal (MCLG)
0 organisms/L
Violating Systems
0 nationwide
Affected Population
0 estimated
Avg Detected Level
0 organisms/L in affected systems
Health Risk Assessment
Exposure to Legionella in drinking water is regulated because of its potential to cause legionnaires disease (pneumonia-like). The EPA has set the Maximum Contaminant Level (MCL) at 0 organisms/L to protect public health.
Note: Long-term exposure above the MCL can significantly increase health risks.
Detailed Health Effects
Legionnaires disease (pneumonia-like)
Common Sources
1
Water cooling towers 2
Hot tubs 3
Plumbing systems National Overview
Total Tests
0
Violations Found
0
Violation Rate
0%
Treatment Methods
Temperature control
Disinfection
Flushing
Is this in your water?
Find out if your local water system has detected Legionella.
Frequently Asked Questions
What is Legionella and why is it in drinking water?
Legionella is a microbial contaminant. Common sources include: Water cooling towers, Hot tubs, Plumbing systems.
What are the health effects of Legionella in drinking water?
Legionnaires disease (pneumonia-like)
What is the EPA limit for Legionella?
The EPA Maximum Contaminant Level (MCL) for Legionella is 0 organisms/L.
How can I remove Legionella from my water?
Effective treatment methods for removing Legionella include: Temperature control, Disinfection, Flushing.
How do I test my water for Legionella?
You can check your water system's annual Consumer Confidence Report for Legionella levels, or use a certified home water testing kit. WaterQ provides the latest EPA test data for all public water systems.