WaterQ

Di(2-ethylhexyl) phthalate in Drinking Water: Health Risks, Sources, and How to Remove It

Alex Carter
Water Quality Researcher · Published 2026-06-23

Di(2-ethylhexyl) phthalate is an organic chemical compound that can sometimes be found in drinking water supplies. It belongs to the category of organic contaminants. The U.S. Environmental Protection Agency (EPA) has set the Maximum Contaminant Level (MCL) for this chemical at 6 μg/L.

Health Effects

Exposure to Di(2-ethylhexyl) phthalate in drinking water above the regulatory limit can lead to several health issues. Over time, individuals may experience reproductive difficulties or liver problems. Additionally, long-term exposure to this contaminant is associated with an increased cancer risk.

How Di(2-ethylhexyl) phthalate Gets Into Tap Water

Di(2-ethylhexyl) phthalate typically enters the water supply through industrial and infrastructure sources. It can leach directly from polyvinyl chloride (PVC) pipes used in water distribution. It is also discharged from chemical factories that produce or use the compound.

How to Remove Di(2-ethylhexyl) phthalate From Your Water

Effective removal of Di(2-ethylhexyl) phthalate from drinking water is possible using specific filtration technologies. Treatment systems utilizing granular activated carbon are commonly used to reduce the concentration of this organic contaminant. Homeowners should look for treatment systems that are certified to remove this specific compound.

Should You Test Your Water?

To determine if Di(2-ethylhexyl) phthalate is present in your water, you can review your water utility's annual consumer confidence report or search for water quality data on WaterQ. Well owners can also opt for water testing through a certified laboratory. You can also look up your local water system on WaterQ or check the Di(2-ethylhexyl) phthalate data page for reported levels in your area.

Frequently Asked Questions

Is Di(2-ethylhexyl) phthalate dangerous in drinking water?

Yes, exposure to Di(2-ethylhexyl) phthalate in drinking water can pose health risks. Over time, it can lead to liver problems and reproductive difficulties. Long-term exposure is also linked to an increased risk of cancer.

How does Di(2-ethylhexyl) phthalate get into tap water?

This chemical typically enters tap water through PVC pipe leaching or from chemical factory discharges.

How can I remove Di(2-ethylhexyl) phthalate from my water?

You can remove Di(2-ethylhexyl) phthalate from your drinking water using granular activated carbon treatment methods.

Source: EPA National Primary Drinking Water Regulations and WaterQ National Database. For more contaminants, visit our contaminant library.