Determination of groundwater threshold values: A methodological approach

Date

2020-04-20

Author

Bulut, Onur F.
Duru, Burcu
Cakmak, Ozgur
Gunhan, Ozgur
Dilek, Filiz Bengü
Yetiş, Ülkü

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This article is concerned with the establishment of natural background levels and threshold values for naturally-occurring parameters in groundwaters in the absence of relevant and accurate long-term spatial data. A new approach was developed and exemplified, adopting the groundwaters of the Gediz River Basin, Turkey, as a case study. The available groundwater monitoring data was from a one-year seasonal water quality monitoring campaign. The approach used combines pre-selection, selection and statistical evaluation of the selected data to eliminate outliers to determine natural background levels. The application of three different statistical tools, namely, probability plot, 2-sigma iteration, and distribution function methods, resulted in different natural background level estimates. The 2-sigma iteration method provided the most conservative values for almost all the parameters. The use of this three-step approach, which adopts different statistical methods, appeared to solve the limited data availability challenges specific to groundwater contamination and improve natural background level assessment and threshold value setting. Lessons learned from this study can help policymakers to promote similar initiatives in other countries where groundwater quality data is limited.

Subject Keywords

Renewable Energy, Sustainability and the Environment, Strategy and Management, Industrial and Manufacturing Engineering, General Environmental Science

URI

https://hdl.handle.net/11511/42546

Journal

JOURNAL OF CLEANER PRODUCTION

DOI

https://doi.org/10.1016/j.jclepro.2020.120001

Collections

Department of Environmental Engineering, Article

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Citation Formats

O. F. Bulut, B. Duru, O. Cakmak, O. Gunhan, F. B. Dilek, and Ü. Yetiş, “Determination of groundwater threshold values: A methodological approach,” JOURNAL OF CLEANER PRODUCTION, pp. 0–0, 2020, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42546.