Suggestions and Complaints

In order to maintain a close connection with our partners and the citizens who we work for daily, we have provided a fast and comfortable method of contact through email, ensuring we respond promptly and comprehensively to everyone's expectations. You may also use our general contacts if you wish.

If you would like to register a complaint, please use the e-mail

Complaints Book

Users may exercise their right to complain about the water and waste services by accessing the Online version of the Complaints Book, at Hence, in addition to the traditional means of complaint, such as the paper version of the Complaints Book, e-mail, and telephone, consumers may also lodge their complaints electronically.

The portal allows you to submit information to regulatory entities, or to consult FAQ's and also the current legislation regarding essential public services, namely electricity, natural gas, water and waste, electronic communications, and postal services.

Alternative Dispute Resolution

LIPOR always endeavors to resolve disputes cordially, being guided by its operating restrictions in terms of logistics, and the safeguarding of the Organization's values. Nevertheless, in the event of dispute, the consumer may resort to an Alternative Dispute Resolution Entity for Consumption:

Porto Consumption and Arbitration Information Center
Phone.: (+351) 225 508 349/(+351) 225 029 791

For updates and further information, please consult the Consumer Portal at (pursuant to Article 18 of Law no. 144/2015, of 8 September).
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