<https://fr.coursera.org/lecture/water-part-2/video-4-1-information-treatment-case-1-in-house-water-quality-testing-LUDcN#lecture>
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"Video 4-1 Information treatment Case 1: In-house water quality testing"
<https://fr.coursera.org/lecture/water-part-2/video-4-1-information-treatment-case-1-in-house-water-quality-testing-LUDcN>