The application for recognition as an expert body in water management must be submitted in writing to the State Institute for the Environment (LUBW). Recognition is revocable. The investigation task for which authorisation is to be granted must be specified in the application.
The application form and other documents required for the application (declaration of obligation, list of procedures for the application for approval for wastewater testing) can be requested informally by sending an e-mail to Post-ASUS@lubw.bwl.de or downloaded here .
The State Institute for the Environment (LUBW) checks the completeness of the application documents and then confirms receipt of the application in writing or by e-mail. If documents are missing, the LUBW will request that they be submitted within a reasonable period of time. After receipt of the complete documents and if all requirements are met, the LUBW will issue a notice of recognition within a period of 3 months.
Further information can be found here