• Toggle Accessibility Statement
  • Home
  • Skip to Main Content
  • Sitemap
Menu
GOVPH
  • Home
  • About Us
    • History
    • Mandate, Vision, Mission, Service Pledge, and Core Values
    • MWSS Regulatory Office Officials
    • MWSS Board of Trustees
    • Links
      • MWSS Corporate Office Website
      • Maynilad Water Services Inc. (MWSI)
        • MWSI Website
        • Concession Agreement
        • Legislative Franchise
        • 2022 Business Plan
      • Manila Water Co. Inc. (MWCI)
        • MWCI Website
        • Concession Agreement
        • Legislative Franchise
        • 2022 Business Plan
  • Regulation Area
    • Office of the Chief Regulator
    • Administration and Legal Affairs Area
    • Customer Service Regulation Area
    • Financial Regulation Area
    • Technical Regulation Area
  • GAD Corner
    • GAD Focal Point System
    • Activities
    • Laws / Issuances
    • Reports
    • IEC Materials
      • GAD IEC Materials
      • MWSS RO IEC Flyers
    • Photos and Videos
    • Awareness Campaign Materials
  • Transparency
    • Transparency Seal
    • Corporate Governance Scorecard
    • Freedom of Information (FOI)
    • Citizen’s Charter
    • Implementing Rules and Regulations (IRRs)
    • Reports
    • Procurements
      • Annual Procurement Plan
      • Procurement Monitoring Report
      • Bids and Awards
        • CY 2025 (click to view)
        • CY 2024
          • Invitation To Bid 2024
          • Request for Quotations / Proposals 2024
          • Notice of Award 2024
        • CY 2023
          • Invitation to Bid 2023
          • Request for Quotations / Proposals 2023
          • Notice of Award 2023
        • CY 2022
          • Invitation to Bid 2022
          • Notice of Award 2022
        • CY 2021
          • Invitation to Bid 2021
          • Notice of Award 2021
        • CY 2020
          • Invitation to Bid 2020
          • Notice of Award 2020
        • CY 2019
          • Invitation to Bid 2019
          • Notice of Award 2019
        • CY 2018
          • Invitation to Bid 2018
          • Notice of Award 2018
        • CY 2017
          • Invitation to Bid 2017
          • Notice of Award 2017
        • CY 2016
          • Annual Procurement Plan 2016
          • Invitation to Bid 2016
          • Supplemantal / Bid Bulletin 2016
        • CY 2015
          • Annual Procurement Plan 2015
          • Invitation to Bid 2015
          • Supplemental / Bid Bulletin 2015
        • CY 2014
          • Annual Procurement Plan 2014
          • Invitation to Bid 2014
          • Notice of Award / Proceed 2014
        • CY 2013
          • Annual Procurement Plan 2013
          • Invitation to Bid 2013
          • Notice of Award / Proceed 2013
        • CY 2012
          • Invitation to Bid 2012
          • Annual Procurement Plan 2012
  • Careers
  • Contact Us
  • AUXILIARY MENU
  • GOVPH
  • Home
  • About Us
    • History
    • Mandate, Vision, Mission, Service Pledge, and Core Values
    • MWSS Regulatory Office Officials
    • MWSS Board of Trustees
    • Links
      • MWSS Corporate Office Website
      • Maynilad Water Services Inc. (MWSI)
        • MWSI Website
        • Concession Agreement
        • Legislative Franchise
        • 2022 Business Plan
      • Manila Water Co. Inc. (MWCI)
        • MWCI Website
        • Concession Agreement
        • Legislative Franchise
        • 2022 Business Plan
  • Regulation Area
    • Office of the Chief Regulator
    • Administration and Legal Affairs Area
    • Customer Service Regulation Area
    • Financial Regulation Area
    • Technical Regulation Area
  • GAD Corner
    • GAD Focal Point System
    • Activities
    • Laws / Issuances
    • Reports
    • IEC Materials
      • GAD IEC Materials
      • MWSS RO IEC Flyers
    • Photos and Videos
    • Awareness Campaign Materials
  • Transparency
    • Transparency Seal
    • Corporate Governance Scorecard
    • Freedom of Information (FOI)
    • Citizen’s Charter
    • Implementing Rules and Regulations (IRRs)
    • Reports
    • Procurements
      • Annual Procurement Plan
      • Procurement Monitoring Report
      • Bids and Awards
        • CY 2025 (click to view)
        • CY 2024
          • Invitation To Bid 2024
          • Request for Quotations / Proposals 2024
          • Notice of Award 2024
        • CY 2023
          • Invitation to Bid 2023
          • Request for Quotations / Proposals 2023
          • Notice of Award 2023
        • CY 2022
          • Invitation to Bid 2022
          • Notice of Award 2022
        • CY 2021
          • Invitation to Bid 2021
          • Notice of Award 2021
        • CY 2020
          • Invitation to Bid 2020
          • Notice of Award 2020
        • CY 2019
          • Invitation to Bid 2019
          • Notice of Award 2019
        • CY 2018
          • Invitation to Bid 2018
          • Notice of Award 2018
        • CY 2017
          • Invitation to Bid 2017
          • Notice of Award 2017
        • CY 2016
          • Annual Procurement Plan 2016
          • Invitation to Bid 2016
          • Supplemantal / Bid Bulletin 2016
        • CY 2015
          • Annual Procurement Plan 2015
          • Invitation to Bid 2015
          • Supplemental / Bid Bulletin 2015
        • CY 2014
          • Annual Procurement Plan 2014
          • Invitation to Bid 2014
          • Notice of Award / Proceed 2014
        • CY 2013
          • Annual Procurement Plan 2013
          • Invitation to Bid 2013
          • Notice of Award / Proceed 2013
        • CY 2012
          • Invitation to Bid 2012
          • Annual Procurement Plan 2012
  • Careers
  • Contact Us
    • Accessibility Statement
    • High Contrast
    • Skip to Content
    • Skip to Footer

  • 1 of 6
  • 2 of 6
  • 3 of 6
  • 4 of 6
  • 5 of 6
  • 6 of 6
  • You are here:
  • Home ›
Philippine Standard Time:

MWSS RO hosts MMDWQMC’s June meeting

Posted on June 27, 2025

On 11 June 2025, the MWSS Regulatory Office (RO), led by Chief Regulator Patrick Lester N. Ty, hosted the monthly meeting of the Metro Manila Drinking Water Quality Monitoring Committee (MMDWQMC). Along with its members representing the 17 local government units (LGUs) in Metro Manila, the Department of Health (Philippines) – Metro Manila Center for continue reading : MWSS RO hosts MMDWQMC’s June meeting

#SaveH2OwithMWSSRO this Pride Month

Posted on June 27, 2025

Love — like water — goes beyond boundaries; it flows freely and runs deep. The MWSS Regulatory Office (RO) proudly stands for equity and inclusion in the water and sanitation sector. Every individual, regardless of sexual orientation, gender identity, gender expression, and sex characteristics (SOGIESC), deserves equal access to safe drinking water and proper sanitation. continue reading : #SaveH2OwithMWSSRO this Pride Month

Get in Touch with Us through the New MWSS RO Contact Numbers: (02) 7777-9000 / 0967-300-2348

Posted on June 25, 2025

We are improving our ways to serve you. You may now reach MWSS Regulatory Office through our new contact numbers: (02) 7777-9000 / 0967-300-2348 Our lines are open from 8:00 AM to 5:00 PM, Monday to Friday, excluding holidays. Visit https://ro.mwss.gov.ph to know more about the agency. #SaveH2OwithMWSSRO #MWSSRODesludging101

#MWSSRODesludging101: Tips para hassle-free ang isasagawang desluging ng septic tank

Posted on June 20, 2025

Na-set na ba ang schedule para ma-desludge o mapasipip ang inyong septic tank o poso negro? Mag-ready na para sa maayos, mabilis, at hassle-free na desludging service! Narito ang ilang tips. #MWSSRODesludging101 *** Para malaman ang desludging schedule sa inyong barangay, tumawag sa: Maynilad Hotline: 1626 Manila Water Hotline: 1627

PUBLIC ADVISORY: eFOI Portal is now Operational!

Posted on June 20, 2025

#SaveH20withMWSSRO: Ngayong back-to-school, pagamitin ng water tumbler ang mga estudyante

Posted on June 20, 2025

uniform? school supplies? baon? Ano pa nga ba ang dapat bitbitin sa paaralan? Narito ang #SaveH2OwithMWSSRO back-to-school reminder ng ating water conservation hero na si Reggie!

Post navigation

← Older posts
Newer posts →

Water Conservation

Desludging Awareness

GCG Whistleblowing Web Portal

Transparency Seal

Service Advisories

Careers

Careers

Corporate Governance

The Metropolitan Waterworks and Sewerage System Regulatory Office (MWSS RO) was created in August 1997 by virtue of the Concession Agreements signed between the MWSS and the two Concessionaires: Manila Water Company, Inc. (Manila Water) for the East Zone and Maynilad Water Services, Inc. (Maynilad) for the West Zone.

The MWSS RO is mandated to monitor the performance of the Concessionaires with respect to their contractual obligations under the RCAs. Among its many functions, the MWSS RO reviews, monitors and enforces rates and service standards; arranges and reports regular independent audits of the performance of the Concessionaires; and monitors the infrastructure assets.

ABOUT US

History

Mandate

MWSS RO Officials

MWSS Board of Trustees

GAD Focal Point System

Citizen's Charter

Careers

Contact us


OFFICE ADDRESS

MWSS RO Building, Katipunan Avenue, corner H. Ventura Street,
Barangay Pansol, Balara, Quezon City 1108