Maynilad Water Safety Plan (updated) Francisco A. Arellano SAVP, Maynilad Water Services, Inc. Maynilad Water Water Safety Plans Managing drinking-water quality from catchment to consumer The first WSP in the Philippines following the WHO guidelines (2007) North Caloocan North Business Region Novaliches Valenzuela Commonwealth Malabon Quirino Navotas South Caloocan Roosevelt Tondo Sa Sta Cruz m pa lo c South Manila South Business Region Maynilad’s Water Safety Plan (WSP) Pasay Makati P ara馻 que Cavite Las P i馻 s 200 7 Maynilad WSP (2007) • Used as a case study on the WHO Training Workbook on Water Safety Plans for Urban Systems (2008) • Served as reference material for 15 WSP workshops participated by 198 water districts • Served as “Big Brother” to 13 WSP developed 1. • • Angeles City No. Of WDs 5 No. Of participants 27 3. • • Ilocos Norte No. Of WDs 5 No. Of participants 41 4. • • Cabanatuan City No. Of WDs 15 No. Of participants 36 7. • • Dagupan City No. Of WDs 17 No. Of participants 53 5. • • Dasmarinas Cavite No. Of WDs 11 No. Of participants 52 6. • • San Pablo City No. Of WDs 5 No. Of participants 26 11. Los Banos • No. Of WDs 6 • No. Of participants 27 8. • • Daet No. Of WDs 7 No. Of participants 47 10. Cebu City • No. Of WDs 19 • No. Of participants 54 9. • • Bacolod No. Of WDs 28 No. Of participants 44 2. • • 12. Cagayan De Oro • No. Of WDs13 • No. Of participants 32 Davao City No. Of WDs 3 No. Of participants 25 But MAYNILAD Water Safety Plan is continuously evolving… A WORK IN PROGRESS What’s new for the Maynilad WSP (2012)? • Change from 10-step to 11-step WSP • Additional scope of WSP • Expanded risk assessment method • Update of hazards identified, its likelihood and its severity • Inclusion of business continuity plan Define monitoring of control measures - what limits define acceptable performance and how these are monitored Establish procedures to verify that the water safety plan is working effectively and will meet the health-based targets Undertake a hazard assessment and risk assessment to identify and understand how hazards can enter into the water supply Upgrade Determine and validate control measures, reassess and prioritize the risks Management & Communication System Assessment Describe the water supply system Assess the existing proposed system ( including a description of the system and a flow diagram) Operational Monitoring Assemble the team to prepare the water safety plan Prepare management procedures documenting actions to be taken when the system is operating under normal conditions (SOPs) and incident situations (corrective actions) Develop supporting programmes (e.g., training, hygiene practices, research and development, calibration of equipment, preventive maintenance, etc.) Plan and carry out periodic review of the WSP Develop, implement and maintain an improvement / upgrade plan Revise the WSP following an incident Feedback Preparation WSP - 10 Steps Define monitoring of control measures - what limits define acceptable performance and how these are monitored Establish procedures to verify that the water safety plan is working effectively and will meet the health-based targets Undertake a hazard assessment and risk assessment to identify and understand how hazards can enter into the water supply Upgrade Determine and validate control measures, reassess and prioritize the risks Management & Communication System Assessment Describe the water supply system Assess the existing proposed system ( including a description of the system and a flow diagram) Operational Monitoring Assemble the team to prepare the water safety plan Prepare management procedures documenting actions to be taken when the system is operating under normal conditions (SOPs) and incident situations (corrective actions) Develop supporting programmes (e.g., training, hygiene practices, research and development, calibration of equipment, preventive maintenance, etc.) Plan and carry out periodic review of the WSP Develop, implement and maintain an improvement / upgrade plan Revise the WSP following an incident Feedback Preparation WSP - 11 Steps Additional scope of WSP • Putatan Water Treatment Plant (PWTP) – Risk assessment for the new technology used (microfiltration and reverse osmosis) Additional scope of WSP • Laguna Lake – Water source for PTWP – Different from fresh water sources Angat and Ipo River for La Mesa Treatment Plant (brackish water) Expanded risk assessment method • Previous assessment was only for after the controls • No means of monitoring the effectiveness of the controls implemented • New method allows for risk assessment for precontrol and post-control Updates of hazards • Over the five years of WSP implementation, hazards may have changed • Frequency of hazardous events (e.g. presence of manganese, algal bloom) are not the same as previous • Impact of hazardous events may be higher or lower than before. Challenges • • • • Climate Change Phenomena Disasters Emergency Preparedness Reorganization and Employee Movements Responses • Design interventions • New technology acquisition • Continuous education and training to cover wider employee population • Benchmarking management systems – Business Continuity Management Systems, ISO 22301 – Risk Assessment, ISO 31000 – Energy Management Systems, ISO 50001
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