4. Main obstacles to the use of on-site methods

4.1 No regulations

The control and monitoring of water quality (wastewater, surface water, groundwater, etc.) is essentially carried out using standardized laboratory methods. These methods, which have been in use for 30 years, are recognized for their reliability, robustness and performance. They are listed in the publications of the various standards bodies (Afnor for France, DIN for Germany, CEN for Europe, ISO for international standards, for example). They are recommended by inspection bodies and regulatory texts, and are therefore used in regulatory inspections.

Rapid on-site methods reflect more recent developments and the need for control bodies to benefit from data acquired much more rapidly, enabling them to manage pollution risks more effectively....