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4. Heating water
In some regions, when tap water is heated in a metal container, it becomes cloudy because it contains suspended matter, and the walls in contact with the water are tarnished. Elsewhere, if the water is heated, nothing visible happens. However, after repeated heating, pitting is observed in the walls and, later, perforations.
These phenomena of calcareous deposition (scaling) or aggressiveness (corrosion) are rarely observed with cold water. To avoid problems with seasonal changes in water temperature, water distributors ensure a calco-carbonic balance, whatever the scaling quality of the water before treatment, and this for summer temperatures of over 25°C.
To protect equipment in contact with hot water, treatments must be carried out to either modify the mineral content or reduce the imbalance created by...
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Heating water
Private pool water
Bibliography
Websites
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UAE – the French union of water treatment professionals
Founded in 1969, the Union française des professionnels du traitement de l'eau is the only professional association in France that brings together all those involved in water treatment in the building industry, from single-family homes to industrial or collective buildings, whether their work involves the point of entry (POE) or the point...
Events
Batimat Reed Expositions (international construction show) is held every two years in Paris (odd-numbered years).
Standards and norms
- Water testing – Determination of total calcium and magnesium concentration – EDTA titrimetric method. - NF T90-003 - Août 1984
- Water quality – Fluoride ion assay – Potentiometric method. - NF T90-004 - Août 2002
- Water quality – Determination of soluble silicates – Molecular absorption spectrometry method. - NF T90-007 - Février 2001
- Water testing – Determination of sulfate ions – Gravimetric method....
Regulations
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European regulations
Directive (EU) 2020/2184 of the European Parliament and of the Council of 16 December 2020 on the quality of water intended for human consumption.
Directive n° 2014/80/UE of 20/06/14 amending Annex II of Directive 2006/118/EC of the European Parliament and of the Council on the protection of groundwater against pollution and deterioration....
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