Di(2-ethylhexyl) phthalate in Drinking Water: Health Risks, Sources, and How to Remove It
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.
What actually removes pesticides and herbicides
These are organic molecules, and granular activated carbon adsorbs them well — it is EPA's designated best available technology for nearly the whole class. An NSF/ANSI 53 filter is sufficient; reverse osmosis is not required. Worth knowing about timing: pesticide levels in surface-water systems spike for a few weeks after spring application, and an annual average in your utility report can hide a much higher seasonal peak.
Works
- Carbon certified for lead (NSF 53)The cheapest thing that genuinely removes lead, cysts and many VOCs.
- Reverse osmosis (NSF 58)The broadest removal available at home: arsenic, nitrate, fluoride, PFAS, TDS.
Will not fix this
- Ion-exchange water softener
- UV disinfection (NSF 55)
- Ion-exchange pitcher
Options that carry the right certification
Ordered cheapest-adequate first. Prices are indicative bands and move often.
| Product | Certification | Upfront | Per year | |
|---|---|---|---|---|
| Aquasana AQ-5200 Under-SinkUnder-sink | NSF/ANSI 42, 53, 401 and P473 certified.Catch:Carbon, not RO — no meaningful fluoride, nitrate or arsenic reduction. | $110–160 | $80–120 | Check price |
| Brita Elite Pitcher FilterPitcher | NSF/ANSI 42 and 53 certified, including a lead reduction claim.Catch:No fluoride, nitrate or arsenic reduction. Not PFAS-rated. | $25–40 | $50–70 | Check price |
| APEC ROES-50 EssenceUnder-sink | Built with WQA-certified components to NSF/ANSI 58.Catch:Needs an under-sink drain connection and a spare hole for the dedicated faucet. Strips minerals — some people dislike the flat taste. | $180–240 | $50–80 | Check price |
Certification listings change. Before buying, confirm the current listing for the exact model in the NSF certified products database — a manufacturer's marketing page is not a certification. WaterQ earns a commission on purchases made through these links at no extra cost to you; see our affiliate disclosure. This is general information, not medical or engineering advice.
For a full breakdown of certifications, running costs and the models worth considering, see our buying guide for pesticides and herbicides.