xmlns:atom="http://www.w3.org/2005/Atom"
There shall be a requirement to supply the following particulars:
the exact site of the catchment with indication of its altitude, on a map with a scale of not more than 1:1 000;
a detailed geological report on the origin and nature of the terrain;
the stratigraphy of the hydrogeological layer;
a description of the catchment operations;
the demarcation of the area or details of other measures protecting the spring against pollution.
These surveys shall establish:
the rate of flow of the spring;
the temperature of the water at source and the ambient temperature;
the relationship between the nature of the terrain and the nature and type of minerals in the water;
the dry residues at 180 °C and 260 °C;
the electrical conductivity or resistivity, with the measurement temperature having to be specified;
the hydrogen ion concentration (pH);
the anions and cations;
the non-ionised elements;
the trace elements;
the radio-actinological properties at source;
where appropriate, the relative isotope levels of the constituent elements of water, oxygen (16O — 18O) and hydrogen (protium, deuterium, tritium);
the toxicity of certain constituent elements of the water, taking account of the limits laid down for each of them.
These analyses shall include:
a demonstration of the absence of parasites and pathogenic micro-organisms;
a quantitative determination of the revivable colony count indicative of faecal contamination:
absence of Escherichia coli and other coliforms in 250 ml at 37 °C and 44,5 °C;
absence of faecal streptococci in 250 ml;
absence of sporulated sulphite-reducing anaerobes in 50 ml;
absence of Pseudomonas aeruginosa in 250 ml;
determination of the revivable total colony count per ml of water:
at 20 to 22 °C in 72 hours on agar-agar or an agar-gelatine mixture;
at 37 °C in 24 hours on agar-agar.