{"id":5473,"date":"2026-01-06T16:02:03","date_gmt":"2026-01-06T15:02:03","guid":{"rendered":"https:\/\/martinique2050.com\/eau-potable-quelles-sont-les-etapes-du-traitement-de-leau\/"},"modified":"2026-01-06T16:02:03","modified_gmt":"2026-01-06T15:02:03","slug":"eau-potable-quelles-sont-les-etapes-du-traitement-de-leau","status":"publish","type":"post","link":"https:\/\/martinique2050.com\/en\/eau-potable-quelles-sont-les-etapes-du-traitement-de-leau\/","title":{"rendered":"Drinking Water: What Are the Stages of Water Treatment?"},"content":{"rendered":"
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Water undergoes several treatment processes before being distributed through the drinking water system. What are they? Learn about the different stages of water treatment.<\/strong><\/p>\n<\/div>\n

The treatment of raw water after it is collected depends on its quality and its constituents, which vary over time. Water drawn from the environment must therefore be continuously analyzed before undergoing the appropriate treatment to make it safe to drink.<\/p>\n

Once this test is completed, the water undergoes\u00a0several treatments<\/span><\/a>\u00a0before being distributed through the drinking water system.<\/p>\n

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Philippe Hubert, director of chronic risks at INERIS, discusses water pollution in more detail during this interview. \u00a9 Futura<\/em><\/div>\n<\/div>\n<\/div>\n

Screening and Sifting<\/h2>\n

As the collected water passes through grates and screens, the largest pieces of debris are removed.<\/p>\n

Oxidation<\/h2>\n

If the organic load is very high or if there is\u2019ammonia<\/span><\/a>, from the\u00a0iron<\/span><\/a>\u00a0or the\u00a0manganese<\/span><\/a>\u00a0in solution, the\u2019oxidation<\/span><\/a>\u00a0facilitates their removal during the clarification phase. This oxidation step can be carried out using\u00a0chlorine<\/span><\/a>\u00a0or the\u2019ozone<\/span><\/a>.<\/p>\n

Clarification: Coagulation-flocculation, settling, and filtration<\/h2>\n

In the presence of\u00a0coagulants and flocculants<\/span><\/a>, the particles suspended in the water clump together to form flocs. The weight of these flocs causes the\u00a0sedimentation<\/span><\/a>\u00a0particles at the bottom of the\u00a0basins<\/span><\/a>\u00a0settling. The\u00a0filtration<\/span><\/a>\u00a0final treatment through mineral filters (sand<\/span><\/a>) or membranes makes it possible to produce crystal-clear water free of particles.<\/p>\n

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