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Overview
Di(2-ethylhexyl) phthalate (DEHP) is a man-made chemical. DEHP is not toxic at the low levels usually present in the environment. Exposure to DEHP is generally very low. The maximum contaminant level (MCL) for DEHP is 6 mcg/L.
Measure Description:
- Public Water Systems - Avg is the number of community water systems that have an annual average concentration of a contaminant in the listed concentration range.
- Population Served - Avg is the population served by community water systems that have an annual average concentration of a contaminant in the listed concentration range.
- Public Water Systems - Max is the number of community water systems that have an annual maximum concentration of a contaminant in the listed concentration range.
- Population Served - Max is the population served by community water systems that have an annual maximum concentration of a contaminant in the listed concentration range.
- Average Concentration by Public Water System is the average concentration of a contaminant.
Di(2-ethylhexyl) Phthalate (DEHP) in Public Water and Health
Exposure and Risk
Exposure to DEHP is generally very low. Increased exposures may come from intravenous (IV) fluids delivered through plastic tubing, and from eating or drinking contaminated foods or water. DEHP is usually present at very low levels in the following:
- Medical products packaged in plastic such as blood products
- Some foods packaged in plastics, especially fatty foods like milk products, fish or seafood, and oils
- Well water near waste sites
- Workplace air or indoor air where DEHP is released, but usually not at levels of concern
- Fluids from plastic IV tubing if used extensively, such as for kidney dialysis
Most of what we know about the health effects of DEHP comes from studies of rats and mice given high amounts of DEHP. In animals, high levels of DEHP damaged the liver and kidney and affected their ability to reproduce. Whether or not DEHP contributes to human kidney damage is unclear.
The U.S. Environmental Protection Agency has set the MCL for DEHP at 6ยตg/L. Some people who drink water containing DEHP over the MCL for many years may have problems with their liver, could experience reproductive difficulties and may have an increased risk of getting cancer.
Prevention
Community Public Water Systems are already being tested for DEHP, and are required to provide that information each year to consumers in the Consumer Confidence Report. It is almost impossible to completely avoid DEHP because it is commonly found in plastics. Prevent babies and small children from chewing on plastic objects that are not toys.
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