5. Conclusion

Water testing is based solely on risk calculation. This will determine the frequency of analyses: bacteriological analyses will be carried out more frequently. In addition, knowledge of a certain number of water parameters enables us to better identify microbiological problems:

• pH ;

• turbidity ;

• forms of nitrogen ;

• oxidizability ;

• dissolved oxygen ;

• bactericidal agent content.

When monitoring medium- and long-term risks, mainly physicochemical, the frequency of analyses will generally be lower.

In all cases, the analysis result can only be guaranteed if the entire analytical chain has...