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A Method for Developing Rapid Screening Values for Active Pharmaceutical Ingredients (APIs) in Water and Results of Initial Application for 119 APIs

Author

Listed:
  • Ashley Suchomel

    (Minnesota Department of Health, Saint Paul, MN 55164, USA)

  • Helen Goeden

    (Minnesota Department of Health, Saint Paul, MN 55164, USA)

  • Julia Dady

    (Minnesota Department of Health, Saint Paul, MN 55164, USA)

Abstract

Americans fill upward of four billion prescriptions for pharmaceuticals each year, and many of those pharmaceuticals eventually make their way into the environment. Hundreds of different active pharmaceutical ingredients (APIs) are detected in ambient waters and source water used for drinking water in the U.S. Very few of these drugs have health-based guidance values that suggest a safe level for individuals exposed in the ambient environment through drinking water. The Minnesota Department of Health (MDH) has developed a novel method to derive screening-level human health guidance values for APIs. This method was designed for rapid evaluation and relies on Food and Drug Administration (FDA)-approved drug labels and limited additional public data resources for necessary information. MDH developed an analytical framework using traditional and novel uncertainty and adjustment factors specific to the information available for APIs. This framework, along with an estimated lowest therapeutic dose (LTD), was used to derive screening reference dose (sRfD) values. Water screening values (WSV) were then derived using the sRfD, a relative source contribution factor (RSC), and a water intake rate for infants to represent a highly exposed population. MDH used this new method to derive water screening values for 119 APIs that are commonly prescribed and/or commonly monitored in Minnesota waters, including antibiotics, antidepressants, steroids, and other classes of drugs. The derived WSVs can be used to provide context to environmental detections, prioritize APIs for further health-based guidance development, prioritize APIs for future environmental monitoring studies, and inform the development or refinement of analytical methods.

Suggested Citation

  • Ashley Suchomel & Helen Goeden & Julia Dady, 2018. "A Method for Developing Rapid Screening Values for Active Pharmaceutical Ingredients (APIs) in Water and Results of Initial Application for 119 APIs," IJERPH, MDPI, vol. 15(7), pages 1-22, June.
  • Handle: RePEc:gam:jijerp:v:15:y:2018:i:7:p:1308-:d:153832
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    References listed on IDEAS

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    1. Helen Goeden, 2018. "Focus on Chronic Exposure for Deriving Drinking Water Guidance Underestimates Potential Risk to Infants," IJERPH, MDPI, vol. 15(3), pages 1-13, March.
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    Cited by:

    1. Patrick Levallois & Cristina M. Villanueva, 2019. "Drinking Water Quality and Human Health: An Editorial," IJERPH, MDPI, vol. 16(4), pages 1-4, February.

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