Artificial infiltration in drinking water production: Addressing chemical hazards using effect-based methods.
Maria Yu1, Shreya Mapuskar1, Elin Lavonen2
1Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Box 7028, Uppsala 750 07, Sweden.
Water Research
|June 28, 2022
Summary
Artificial infiltration effectively removes harmful chemicals from drinking water, as shown by bioassays measuring receptor activity. This study highlights the method
Area of Science:
- Environmental Science
- Water Treatment Technologies
- Ecotoxicology
Background:
- Artificial infiltration is a managed aquifer recharge method used in drinking water treatment.
- Groundwater from artificial infiltration can be contaminated with chemical hazards.
- Limited research exists on the bioanalytical assessment of drinking water quality after artificial infiltration.
Purpose of the Study:
- To conduct an effect-based assessment of chemical hazards in a Swedish drinking water system using artificial infiltration.
- To evaluate the effectiveness of artificial infiltration in removing bioactive compounds using a panel of cell-based reporter gene assays.
Main Methods:
- Samples were collected from a Swedish drinking water system utilizing artificial infiltration of river water.
- Solid phase extraction was used to enrich samples.
- Cell-based reporter gene assays were employed to measure oxidative stress response (Nrf2 activity), aryl hydrocarbon receptor (AhR) activation, and estrogen receptor (ER) and androgen receptor (AR) activity.
Main Results:
- Aryl hydrocarbon receptor (AhR) and estrogen receptor (ER) bioactivities were detected in river intake and infiltration basin samples.
- Artificial infiltration significantly reduced AhR activity and effectively removed ER activity.
- No significant Nrf2 or AR bioactivities were detected in any samples throughout the treatment process.
Conclusions:
- Artificial infiltration is effective in reducing bioactive contaminants in raw river water.
- The study underscores the need for more effect-based research to understand the risks and benefits of artificial infiltration in drinking water production.
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