Trichloroethylene (TCE) in Drinking Water
Complete contaminant profile for trichloroethylene (TCE) in drinking water, including sources, health concerns, groundwater contamination pathways, testing methods, treatment technologies, and drinking water safety guidance.
Quick Facts
What Is Trichloroethylene (TCE)?
Trichloroethylene, commonly known as TCE, is a chlorinated solvent historically used for metal degreasing, industrial cleaning, manufacturing processes, and chemical production.
Because of its widespread industrial use, TCE has become one of the most frequently detected groundwater contaminants worldwide.
Why TCE Matters
TCE is closely monitored because it can persist in soil and groundwater for long periods and may migrate significant distances from the original contamination source.
Main Sources of TCE Contamination
Industrial Degreasing
Historically used to clean metal parts and manufacturing equipment.
Manufacturing Facilities
Industrial production processes may release TCE into the environment.
Hazardous Waste Sites
Improper disposal practices have created numerous contamination sites.
Military Installations
Many historical contamination cases involve military and aerospace facilities.
Potential Health Concerns
TCE is considered a contaminant of significant concern due to potential long-term health effects associated with elevated exposure.
Short-Term Exposure
High exposure may affect the nervous system and cause symptoms such as dizziness, headaches, or fatigue.
Long-Term Exposure
Long-term exposure has been extensively studied by health and environmental agencies worldwide.
Sensitive Populations
Children, pregnant individuals, and populations living near contaminated groundwater sites may require special attention.
How TCE Is Detected
- VOC laboratory testing.
- Groundwater monitoring programs.
- Environmental site investigations.
- Municipal water quality monitoring.
- Private well testing.
TCE Removal Technologies
| Treatment Method | Effectiveness | Comments |
|---|---|---|
| Activated Carbon | High | Widely used treatment technology |
| Air Stripping | High | Effective for volatile solvents |
| Advanced Oxidation | High | Common in remediation projects |
| Reverse Osmosis | Moderate | Often used with carbon treatment |
| Boiling | Not Recommended | May release VOCs into indoor air |
TCE and Groundwater Contamination
TCE can sink below groundwater tables and form long-lasting contamination zones that are difficult and expensive to remediate.
Many cleanup projects continue for years or even decades after the original release.
Vapor Intrusion Concerns
Because TCE is volatile, contamination may move from groundwater into soil gas and potentially enter buildings through a process known as vapor intrusion.
This pathway is frequently evaluated during environmental investigations.
Related Contaminants
Frequently Asked Questions
What is TCE?
TCE is a chlorinated industrial solvent widely used for metal cleaning and manufacturing operations.
Can TCE contaminate drinking water?
Yes. TCE is one of the most common industrial groundwater contaminants.
Can activated carbon remove TCE?
Yes. Activated carbon is commonly used for TCE treatment.
Can boiling remove TCE?
No. Boiling is not recommended because volatile contaminants may enter indoor air.
Why is TCE closely regulated?
TCE has been extensively studied because of its potential long-term health concerns.
Quick Summary
Trichloroethylene (TCE) is a chlorinated industrial solvent commonly associated with groundwater contamination near manufacturing facilities, military sites, and hazardous waste locations. Because TCE can persist for long periods and migrate through groundwater, it remains one of the most closely monitored industrial contaminants. Activated carbon, air stripping, and advanced treatment technologies are among the most effective solutions.