How it works

Do you want to file a complaint? Fill out the request form below and press SEND. We will contact you as soon as possible to provide you with all the information to start your complaint.

You can also make a complaint by sending an email to or a certified email by downloading and filling out the form you can find here.

We remind you that you can always make a complaint also through: 

  • customer assistance telephone service - toll-free number 800.428.428 from Monday to Friday from 8.00 to 18.00 and on Saturday from 8.30 to 12.30; 
  • e-mail to the address or via PEC to the address by downloading and filling in the appropriate form; 
  • counter to the public;
  • by fax to 02/89520289;
  • by post to the address: CAP Group - Customer Service and Complaints Office, Via Rimini 38 - 20142 - Milan.

We inform you that the Integrated Water Service Charter requires that complaints are answered within 20 working days from the date of submission.