MWSS Regulatory Office

  • Home
  • MWSS Regulatory Office
Directions Website Contact the organization

MWSS Regulatory Office The MWSS Regulatory Office (RO) was created in August 1997 by virtue of the Concession Agreements for the West Zone and Maynilad Water Services, Inc.

The Regulatory Office

The MWSS Regulatory Office (RO) was created in August 1997 by virtue of the Concession Agreements signed between the MWSS and the two concessionaires, Manila Water Company, Inc. for the East Zone. The MWSS RO functions as a collegial body composed of five (5) members headed by the Chief Regulator who has over-all responsibility for the operation of the office. Other members are the Deputy Administrators for Technical Regulation, Customer Service Regulation, Financial Regulation and Administration and Legal Affairs. Any action or decision by the MWSS RO on substantive matters affecting the Concession Agreement requires at least a majority vote of three (3) members. The Chief Regulator chairs the meetings of the RO and has the final approval over the hiring and dismissal of all professional staff. He also acts as the principal spokesperson of the office. The MWSS RO is mandated to monitor the Concession Agreement. Among its many functions, the RO reviews, monitor and enforces rates and service standards; arranges and reports regular independent audits of the performance of the Concessionaires; and monitors the infrastructure assets. However, RO functions may change over time for the effective regulation of water and sewerage services.

NEWS SPLASH | MWSS RO, MAYNILAD, AT MANILA WATER, PINALALAKAS ANG PAGHAHANDA LABAN SA POSIBLENG EPEKTO NG SUPER EL NIÑO ...
29/10/2026

NEWS SPLASH | MWSS RO, MAYNILAD, AT MANILA WATER, PINALALAKAS ANG PAGHAHANDA LABAN SA POSIBLENG EPEKTO NG SUPER EL NIÑO SA SUPLAY NG TUBIG

Bilang paghahanda sa posibleng epekto ng Super El Niño, nagtipon ang mga opisyal ng MWSS RO, Maynilad, at Manila Water noong ika-6 ng Oktubre 2026 upang talakayin ang mga hakbang para mapanatili ang sapat at tuloy-tuloy na suplay ng tubig sa buong Concession Area.

Binigyang-pansin sa pagpupulong ang kahandaan ng mga water treatment plants (WTPs) na nagsisilbing alternative water sources na nagsusuplay ng tubig sa Metro Manila at ilang bahagi ng mga lalawigan ng Rizal at Cavite, upang matiyak ang kahandaan ng mga pasilidad sa pagharap sa mga posibleng hamon sa suplay ng tubig.

Bukod sa sapat at tuloy-tuloy na suplay ng tubig, tinitiyak din ng MWSS RO at mga Konsesyonaryo na pasado sa pamantayan ng Philippine National Standards for Drinking Water na itinakda ng Department of Health ang tubig na inihahatid sa publiko.

HAPPENING ON 23 OCTOBER (TOMORROW - FRIDAY) | This is to inform the public that the MWSS Regulatory Office (RO) will hol...
22/10/2026

HAPPENING ON 23 OCTOBER (TOMORROW - FRIDAY) | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pre-Rate Rebasing Public Consultation Drive (PCDr) for the East Zone.

💧Manila Water Cluster 3 (City of Antipolo; Municipalities of Angono, Baras, Binangonan, Cainta, Cardona, Jalajala, Montalban, Morong, San Mateo, Taytay, and Teresa)
23 October 2026 (Friday) / 8:00 AM to 12:00 NN
Ynares Event Center, Antipolo City

The MWSS RO invites local chief executives within the East Zone, media organizations, civil society organizations, and concerned public and private institutions to participate in the PCDr. This event will also be livestreamed via MWSS RO page for Manila Water customers.

***

About the PCDr:
The MWSS RO conducts a Rate Rebasing exercise every five years pursuant to the RCAs entered into by the MWSS with Manila Water and Maynilad. Rate Rebasing is a periodic performance review and general tariff adjustment that sets the maximum rates that the Concessionaires may charge for their services. Prior to the actual Rate Rebasing, the MWSS RO holds a Pre-Rate Rebasing Public Consultation Drive (PCDr) to inform the Local Government Units (LGUs) on the completed and ongoing projects, programs, and plans of the Concessionaires; solicit valuable inputs from LGUs that may be incorporated in the Business Plans of the Concessionaires; and provide a venue for discussing and addressing prevailing issues and concerns of stakeholders on water, sewerage, and sanitation services, and for exploring good practices in providing services.

***

The following Pre-Rate Rebasing Public Consultation Drive for the East Zone was successfully conducted:
- For the cities of Marikina, Pasig, Quezon, and San Juan): 14 October 2026 at the GT-Toyota Asian Center, Quezon City
- For the Cities of Makati, Mandaluyong, Manila, Taguig, and Parañaque; Municipality of Pateros): 22 October 2026 at the Makati Coliseum, Makati City

🖥️ Access the 2026 Pre-Rate Rebasing Public Consultation Drive speaker presentations here:
https://tinyurl.com/2026PreRateRebasingSlides

***

For inquiries regarding this activity, please contact the MWSS RO Public Information Department at 0977 295 6371 / 0277779019 / [email protected] or the MWSS RO PCDr Secretariat at [email protected]


ENABLING INCLUSIVE GOVERNANCE I On 01 October 2026, the MWSS Regulatory Office (RO), through its Gender and Development ...
21/10/2026

ENABLING INCLUSIVE GOVERNANCE I On 01 October 2026, the MWSS Regulatory Office (RO), through its Gender and Development (GAD) Focal Point System (GFPS), hosted a GAD Kapihan activity titled “From Accessibility to Inclusion – Benchmarking Government Practices on Disability Inclusion and Disability Compliance Audit Readiness.”

Held in Quezon City, the activity aimed to strengthen the MWSS RO’s readiness for the National Council on Disability Affairs’ (NCDA) Disability Compliance Audit Program (DCAP) through knowledge exchange on accessibility audits and disability-inclusive practices. It also provided a platform for identifying good practices, addressing compliance gaps, and developing recommendations to promote more accessible, equitable, and inclusive public service.

In his remarks, MWSS RO Chief Regulator Patrick Lester N. Ty highlighted the value of benchmarking in identifying concrete actions to strengthen the Office’s readiness for the DCAP and advance inclusive public service. He also emphasized the need to ensure that water and wastewater services are accessible and responsive to everyone, particularly persons with disabilities and other vulnerable groups.

MWSS RO Deputy Administrator for Administration and Legal Affairs and GFPS Chairperson Claudine Orocio-Isorena emphasized that inclusion is reflected in everyday decisions, from designing accessible spaces and developing inclusive policies to fostering a respectful workplace.

Representatives from various government agencies shared their best practices during the activity. Participating institutions included the Department of Public Works and Highways, Department of Transportation, Department of Human Settlements and Urban Development, Civil Service Commission, and National Council on Disability Affairs.

Through initiatives like the GAD Kapihan, the MWSS RO continues to strengthen interagency collaboration and advance gender equality, disability inclusion, and empowerment in the public sector, helping promote more accessible and inclusive services for all.

💜Empower her. Conserve water.
💜Empower with care. Promote proper sanitation for her.


HAPPENING ON 22 (TOMORROW - THURSDAY) AND 23 OCTOBER (FRIDAY) | This is to inform the public that the MWSS Regulatory Of...
21/10/2026

HAPPENING ON 22 (TOMORROW - THURSDAY) AND 23 OCTOBER (FRIDAY) | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pre-Rate Rebasing Public Consultation Drive (PCDr) for the East Zone.

💧Manila Water Cluster 2 (Cities of Makati, Mandaluyong, Manila, Taguig, and Parañaque; Municipality of Pateros)
22 October 2026 (Thursday) / 8:00 AM to 12:00 NN
Makati Coliseum, Makati City

💧Manila Water Cluster 3 (City of Antipolo; Municipalities of Angono, Baras, Binangonan, Cainta, Cardona, Jalajala, Montalban, Morong, San Mateo, Taytay, and Teresa)
23 October 2026 (Friday) / 8:00 AM to 12:00 NN
Ynares Event Center, Antipolo City

The MWSS RO invites local chief executives within the East Zone, media organizations, civil society organizations, and concerned public and private institutions to participate in the PCDr. This event will also be livestreamed via MWSS RO page for Manila Water customers.

***

About the PCDr:
The MWSS RO conducts a Rate Rebasing exercise every five years pursuant to the RCAs entered into by the MWSS with Manila Water and Maynilad. Rate Rebasing is a periodic performance review and general tariff adjustment that sets the maximum rates that the Concessionaires may charge for their services. Prior to the actual Rate Rebasing, the MWSS RO holds a Pre-Rate Rebasing Public Consultation Drive (PCDr) to inform the Local Government Units (LGUs) on the completed and ongoing projects, programs, and plans of the Concessionaires; solicit valuable inputs from LGUs that may be incorporated in the Business Plans of the Concessionaires; and provide a venue for discussing and addressing prevailing issues and concerns of stakeholders on water, sewerage, and sanitation services, and for exploring good practices in providing services.

***

The Pre-Rate Rebasing Public Consultation drive for the East Zone: Manila Water Cluster 1 was successfully conducted on 14 October 2026 at the GT-Toyota Asian Center in Quezon City.

🖥️ Access the 2026 Pre-Rate Rebasing Public Consultation Drive speaker presentations here:
https://tinyurl.com/2026PreRateRebasingSlides

***

For inquiries regarding this activity, please contact the MWSS RO Public Information Department at 0977 295 6371 / 0277779019 / [email protected] or the MWSS RO PCDr Secretariat at [email protected]


PLANTING FOR FUTURE GENERATIONS | On 25 September 2026, the MWSS Regulatory Office (RO) marked its 29th anniversary thro...
19/10/2026

PLANTING FOR FUTURE GENERATIONS | On 25 September 2026, the MWSS Regulatory Office (RO) marked its 29th anniversary through a tree-planting activity at the Ipo Dam Watershed in Norzagaray, Bulacan.

The initiative, titled “29K TREES FOR 29 YEARS,” aims to plant 29,000 seedlings in support of the Philippine Government’s Expanded National Greening Program.

Led by Chief Regulator Patrick Lester N. Ty, the MWSS RO kicked off the initiative in partnership with its Concessionaires, Maynilad Water Services, Inc.and Manila Water, and R. Lapids Food Corp., together with the following partner organizations:

• Alumni Association of Xavier School
• Arellano Chief’s Environmental Society
• Flying V
• Gabay Dayaw Class of Career Executive Service Board
• Gabriel’s Sanctuary
• Institute of Electronics Engineers of the Philippines NCR North-East Chapter
• JDM Cooling Technology
• Maybank Philippines
• Movie and Television Review and Classification Board
• Notre Dame of Greater Manila
• Rotary Club District 3810 Jose Abad Santos
• Rotary Club District 3810 Lubang Island
• Rotary Club District 3810 Mabini Manila
• Rotary Club District 3810 Manila Fort Santiago
• Rotary Club District 3810 Tondo Metro
• Siguion Reyna, Montecillo & Ongsiako Law
• Soroptimist International Metro Manila Northwest District
• Soroptimist International Sampaloc
• Soroptimist International Manila Tourist Belt
• Soroptimist International Malabon
• Soroptimist International Caloocan
• University of the Philippines-Upsilon Sigma Phi
• University of the Philippines-Sigma Delta Phi
• Valvetek Trading
• Xylem Water Systems International, Inc.

In his remarks, Chief Regulator Ty emphasized the role of tree planting in protecting watersheds and preserving natural resources for future generations.

The MWSS RO thanks its stakeholders and partners for their support and participation in this initiative, which contributes to the protection of our watersheds and the sustainability of our water supply.

The Office encourages individuals, organizations, and other stakeholders to join the tree-planting advocacy and help safeguard our water resources for generations to come.

***

Water is not infinite. Let us do everything we can to conserve it.

HAPPENING ON 22 AND 23 OCTOBER | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pr...
19/10/2026

HAPPENING ON 22 AND 23 OCTOBER | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pre-Rate Rebasing Public Consultation Drive (PCDr) for the East Zone.

💧Manila Water Cluster 2 (Cities of Makati, Mandaluyong, Manila, Taguig, and Parañaque; Municipality of Pateros)
22 October 2026 (Thursday) / 8:00 AM to 12:00 NN
Makati Coliseum, Makati City

💧Manila Water Cluster 3 (City of Antipolo; Municipalities of Angono, Baras, Binangonan, Cainta, Cardona, Jalajala, Montalban, Morong, San Mateo, Taytay, and Teresa)
23 October 2026 (Friday) / 8:00 AM to 12:00 NN
Ynares Event Center, Antipolo City

The MWSS RO invites local chief executives within the East Zone, media organizations, civil society organizations, and concerned public and private institutions to participate in the PCDr. This event will also be livestreamed via MWSS RO page for Manila Water customers.

***

About the PCDr:
The MWSS RO conducts a Rate Rebasing exercise every five years pursuant to the RCAs entered into by the MWSS with Manila Water and Maynilad. Rate Rebasing is a periodic performance review and general tariff adjustment that sets the maximum rates that the Concessionaires may charge for their services. Prior to the actual Rate Rebasing, the MWSS RO holds a Pre-Rate Rebasing Public Consultation Drive (PCDr) to inform the Local Government Units (LGUs) on the completed and ongoing projects, programs, and plans of the Concessionaires; solicit valuable inputs from LGUs that may be incorporated in the Business Plans of the Concessionaires; and provide a venue for discussing and addressing prevailing issues and concerns of stakeholders on water, sewerage, and sanitation services, and for exploring good practices in providing services.

***

The Pre-Rate Rebasing Public Consultation drive for the East Zone: Manila Water Cluster 1 was successfully conducted on 14 October 2026 at the GT-Toyota Asian Center in Quezon City.

🖥️ Access the 2026 Pre-Rate Rebasing Public Consultation Drive speaker presentations here:
https://tinyurl.com/2026PreRateRebasingSlides

***

For inquiries regarding this activity, please contact the MWSS RO Public Information Department at 0977 295 6371 / 0277779019 / [email protected] or the MWSS RO PCDr Secretariat at [email protected]


16/10/2026

True progress in water and wastewater regulation relies on strong partnerships with stakeholders and a shared commitment to better public services.

As preparations continue for the upcoming Rate Rebasing, the MWSS Regulatory Office (RO) is conducting Public Consultation Drives across the Concession Areas to keep communities informed about Manila Water and Maynilad Water Services, Inc. initiatives, gather public feedback for consideration in their future business plans, and address key service concerns.

Discover how collaboration through participatory governance turns challenges into opportunities and delivers meaningful results for the public. Read the highlights of the MWSS RO Annual Report 2024: https://tinyurl.com/MWSSROAnnualReport2024

Tag-init ☀️ o tag-ulan 🌧️: Kailan nga ba dapat magpadesludge o magpasipsip ng septic tank o poso negro? 🚽Linawin natin a...
16/10/2026

Tag-init ☀️ o tag-ulan 🌧️: Kailan nga ba dapat magpadesludge o magpasipsip ng septic tank o poso negro? 🚽

Linawin natin ang diskusyon tungkol sa kung may tamang panahon nga ba para sa mahalagang prosesong ito.

Tandaan, protektahan ang kalusugan at kalikasan sa pamamagitan ng wastong wastewater management.

***

Tumawag sa o Water para malaman ang desludging schedule sa inyong barangay:
📞 Maynilad: 1626
📞 Manila Water: 1627

Maaari ring makipag-ugnayan sa inyong barangay tungkol dito.

HAPPENING ON 22 AND 23 OCTOBER | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pr...
16/10/2026

HAPPENING ON 22 AND 23 OCTOBER | This is to inform the public that the MWSS Regulatory Office (RO) will hold the 2026 Pre-Rate Rebasing Public Consultation Drive (PCDr) for the East Zone.

💧Manila Water Cluster 2 (Cities of Makati, Mandaluyong, Manila, Taguig, and Parañaque; Municipality of Pateros)
22 October 2026 (Thursday) / 8:00 AM to 12:00 NN
Makati Coliseum, Makati City

💧Manila Water Cluster 3 (City of Antipolo; Municipalities of Angono, Baras, Binangonan, Cainta, Cardona, Jalajala, Montalban, Morong, San Mateo, Taytay, and Teresa)
23 October 2026 (Wednesday) / 8:00 AM to 12:00 NN
Ynares Event Center, Antipolo City

The MWSS RO invites local chief executives within the East Zone, media organizations, civil society organizations, and concerned public and private institutions to participate in the PCDr. This event will also be livestreamed via MWSS RO page for Manila Water customers.

***

About the PCDr:

The MWSS RO conducts a Rate Rebasing exercise every five years pursuant to the RCAs entered into by the MWSS with Manila Water and Maynilad. Rate Rebasing is a periodic performance review and general tariff adjustment that sets the maximum rates that the Concessionaires may charge for their services. Prior to the actual Rate Rebasing, the MWSS RO holds a Pre-Rate Rebasing Public Consultation Drive (PCDr) to inform the Local Government Units (LGUs) on the completed and ongoing projects, programs, and plans of the Concessionaires; solicit valuable inputs from LGUs that may be incorporated in the Business Plans of the Concessionaires; and provide a venue for discussing and addressing prevailing issues and concerns of stakeholders on water, sewerage, and sanitation services, and for exploring good practices in providing services.

***

The Pre-Rate Rebasing Public Consultation drive for the East Zone: Manila Water Cluster 1 was successfully conducted on 14 October 2026 at the GT-Toyota Asian Center in Quezon City.

🖥️ Access the 2026 Pre-Rate Rebasing Public Consultation Drive speaker presentations here:
https://tinyurl.com/2026PreRateRebasingSlides

This Global Handwashing Day, let's all and !The MWSS Regulatory Office (RO) joins this global advocacy to promote han...
15/10/2026

This Global Handwashing Day, let's all and !

The MWSS Regulatory Office (RO) joins this global advocacy to promote handwashing with soap as a simple, affordable, and effective way to prevent diseases and save lives. 💧

Try this tip from Reggie, our Water Conservation Hero, on how to use water responsibly while washing your hands!

***
Water is not infinite. Let us do everything we can to conserve it.

Address


Opening Hours

Monday 08:00 - 17:00
Tuesday 08:00 - 17:00
Wednesday 08:00 - 17:00
Thursday 08:00 - 17:00
Friday 08:00 - 17:00

Website

Alerts

Be the first to know and let us send you an email when MWSS Regulatory Office posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to MWSS Regulatory Office:

Shortcuts

  • Want your organization to be the top-listed government service?

Share