Announcement Of A European Open Telematic Procedure On A Corporate Negotiation Platform (E-Procurement) Pursuant To Articles 70 And 71 Of The Legislative Decree. 36/2023 In A Single Batch, Of The Service For The Prevention And Containment Of Risks From Microbiological Agents, Including Legionella And The Quality Of Water Intended For Human Consumption In Water Systems For Domestic Water Distribution At Pres