The MWSS Regulatory Office(RO) successfully maintained its ISO 9001:2015 certification for its Quality Management System (QMS) following a recertification audit on 17 September 2024. The audit covered three (3) core processes: Provision of Regulatory Services on Service Obligations Monitoring for Water Supply and Wastewater Effluent Quality, Customer Complaints Management Process, and Annual Adjustment of Consumer Price Index-based Items.

Conducted by the renowned international certification body, TÜV NORD Philippines, Inc., the audit reaffirmed MWSS RO’s compliance with ISO global standards in regulating the services of Manila Water and Maynilad under the Concession Agreements.

The audit highlighted three (3) Good Practices (GP) and found zero (0) Major Nonconformities (NC A) and Minor Nonconformities (NC B).

The MWSS RO first received its ISO 9001:2015 certification on 31 December 2018.