On 13 January 2025, water utility company Marche Multiservizi S.p.A. (MMS) sent a formal notice to Pia Perricci, woman human rights defender and president of EvolviAmo Pesaro Association, an organisation working on citizen participation and transparency of public funds, informing her that she had ten days to retract statements she allegedly made on 4 January 2025 during a radio interview and declare them false, otherwise they would initiate a lawsuit.

On 27 June 2025, MMS filed a defamation lawsuit, stating that Pia Perricci has initiated “a full-blown media campaign”, that she was “distorting the facts” which would “likely to cause unjustified social alarm.” The company claimed that by publicly criticising and questioning the legitimacy and lawfulness of retroactive tariff adjustment mechanisms, she damaged the reputation and corporate image of the company. MMS demanded €150.000 in compensation for the alleged damages.