Division 1.2 Requirements for physical, chemical and physico-chemical surveys

These surveys shall establish:

1. 1.2.1.

   the rate of flow of the spring;

2. 1.2.2.

   the temperature of the water at source and the ambient temperature;

3. 1.2.3.

   the relationship between the nature of the terrain and the nature and type of minerals in the water;

4. 1.2.4.

   the dry residues at 180 °C and 260 °C;

5. 1.2.5.

   the electrical conductivity or resistivity, with the measurement temperature having to be specified;

6. 1.2.6.

   the hydrogen ion concentration (pH);

7. 1.2.7.

   the anions and cations;

8. 1.2.8.

   the non-ionised elements;

9. 1.2.9.

   the trace elements;

10. 1.2.10.

    the radio-actinological properties at source;

11. 1.2.11.

    where appropriate, the relative isotope levels of the constituent elements of water, oxygen (¹⁶O — ¹⁸O) and hydrogen (protium, deuterium, tritium);

12. 1.2.12.

    the toxicity of certain constituent elements of the water, taking account of the limits laid down for each of them.