When the quality standards are not met and the Prefect, on the basis of a report from the Director General of the Regional Health Agency, considers that the distribution presents a risk to people’s health, he asks the person responsible for producing or distributing the water to take corrective measures to restore the quality of the water. It informs the mayor and the director general of the regional health agency, who forwards this information to the territorially competent prefect of the effective application of the measures taken.