From 10 to 11 December 2019, MWSS Regulatory Office (RO) officials, led by Chief Regulator Atty. Patrick Lester N. Ty, were present at the public briefing of the House Committees on Good Government and Public Accountability and Public Accounts, to clarify issues surrounding water distribution rates within the concession areas of Manila Water Company, Inc. and Maynilad Water Services, Inc.

On 10 December, MWSS RO officers also attended the public hearing of the Senate Committee on Public Services joint with the Committees on Civil Service, Government Reorganization and Professional Regulation; Ways and Means; and Finance. Among the measures discussed were the proposed bills for the establishment of a national water regulatory commission.