Dataset Information

Overview of Monitoring Techniques for Evaluating Water Quality at Potable Reuse Treatment Facilities.

ABSTRACT: Needless to say, the safety of treated water for potable reuse must be definitively ensured. Numerous methods are available for assessing water quality; it's important to understand their challenges and limitations.

SUBMITTER: Vandegrift J

PROVIDER: S-EPMC7159541 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Overview of Monitoring Techniques for Evaluating Water Quality at Potable Reuse Treatment Facilities.

Vandegrift Jillian J Hooper Jennifer J da Silva Allegra A Bell Kati K Snyder Shane S Rock Channah M CM

Journal - American Water Works Association 20190701 7

Needless to say, the safety of treated water for potable reuse must be definitively ensured. Numerous methods are available for assessing water quality; it's important to understand their challenges and limitations. ...[more]

PMID: 32313288

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Project description:In the search for sustainable drinking water, many countries are weighing up the benefits of advanced treatment technologies as a proactive measure to assist with the transformation of treated wastewater into a source of water used for the production of potable water. We investigated the biological effects along a pilot plant with an advanced water treatment process, using zebrafish embryos at different stages of development. The study took an innovative approach, comparing phenotypic observations with whole genome responses. This enabled us to keep an open mind about which chemicals might be influencing the biological activity. There was no evidence of acute toxicity at any stage of treatment, but distinctive abnormalities – skeletal, cardiovascular and pigmentation – occurred in a small proportion of embryos along the treatment process, and in a tap water, that were not detected in the aquarium water control. Reverse osmosis (RO) reduced the concentration of measured chemical contaminants in the water the most, whilst eliminating the occurrence of abnormalities detected in the fish. In contrast, advanced oxidation appeared to reverse the benefits of RO treatment by increasing the frequency of teratogenic and sub-lethal abnormalities seen in embryos. Genomic analysis found alterations to the retinoid system, which was consistent with the teratogenic abnormalities observed. In addition, we found evidence of changes to metabolic pathways, including tryptophan metabolism associated with the production of melatonin required for the control of normal circadian rhythms. Although we cannot extrapolate these preliminary findings in zebrafish embryos to human or environmental health, we show that underexplored forms of biological activity (that existing Test Guidelines are not designed to capture) occur in treated wastewater effluent, and/or may be created depending on the type of advanced treatment process used. Although the identity of the culprit chemicals are unknown at this time, our innovative approach highlights the need for more research into the effects of chemicals on the retinoid system (and metabolism).

Dataset Information

Overview of Monitoring Techniques for Evaluating Water Quality at Potable Reuse Treatment Facilities.

Publications

Overview of Monitoring Techniques for Evaluating Water Quality at Potable Reuse Treatment Facilities.

Similar Datasets

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