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Water Safety Plan for Small Community Water Supply Schemes Dr S K Weragoda Chief Engineer Greater Dambulla WSP 01-04-2014 1

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Contents Introduction History of application in Sri Lanka Importance of applying WSPs Basic concepts in application of WSPs 2

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Introduction Water Quality Surveillance or water quality testing is tedious and resource wasting approach in ensuring water quality as testing of sample is key factor. Application of ISO 9001 in water sector does not consider any impact on water quality before the intake. Hence, Water Safety Plan (WSP) has become the principal tool to assure safe drinking water (3 rd and 4 th Edition of WHOs DWA guidelines). 3

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WHO Water Safety Framework Health- based targets Water Safety Plans System AssessmentMonitoring Management, Documentation & Communication Surveillance Public health context & health outcome 4

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From Theory to Best Practice 2003 HACCP principles applied (Iceland, Australia) 2004- 2006 Implementation of WSPs (Uganda, Portugal, Brazil) 2010 onwards Mainstreamed by utilities, regulators, banks, NGOs 2004 WSPs included in WHO GDWQ & IWA Bonn Charter 2007 WSPs part of E&W regulations 2009 WSP auditing (NZ, Australia, UK) 5

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History of Application of WSPs in Sri Lanka December 2004 tsunami highlighted the need of a proper water surveillance system. Hepatitis A in 2007 in Gampola has shown the importance of having a proper water quality management system Understanding the need; First training on WSP application in Colombo in Year 2010 APN funded project between Sri Lanka and Singapore in Year 2011 2012 WHO funded training program in Kandy in Year 2013 Commenced to develop six WSPs 6

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How much water in the Human body? 7

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Adequate Water Helps Prevent Headaches Constipation Kidney stones Bladder cancer Exhaustion and heat stroke Heart attacks and strokes .. 8

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If Quality of the water is ???.. Physical Biological Chemical 9

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From catchment to end user

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From distribution to end user From distribution to end user

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WSP application in Small Community WSSs What are small community water supply schemes? SCWSSs are defined based on their population size, treatment capacity, treatment technology, etc. What is a water safety plan? WSP approach is the assessment, prioritization and continuous management of risk to water safety from catchment to consumer. Why should apply WSPs to SCWSSs? Adopting an incremental improvement plan means that improvements are made over time, moving gradually towards meeting community, local or national water quality targets or objectives. 13

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Water Safety Plan Continuous Improvement Cycle (For Small Scale WTP) Task 1 Engage community and assemble a water safety plan team Task 2 Describe the community water supply Task 3 Identify and assess hazards, hazardous events, risk and existing control measures Task 4 Develop and implement an incremental improvement plan Task 5 Monitor control measures and verify the effectiveness of the WSP Task 6 Document, review and improve all aspects of WSP implementation 14

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WSP Ehiliyagoda WBMLI Weerasekara, Senior Chemist, Kegalle. 15

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WSP committee (Task 01) 1.Regional Level 1.AGM-Coordinator 2.Manager (O&M)-Member 3.RSC Chemist-Team Leader 4.CE(P&D)-Member 5.Regional/Senior Chemist-Member 6.Engineer(O&M)-Member 7.Mechanical Engineer-Member 8.Sociologist-Member 9.OIC-Member 10.Dis. Envi. Committee-Member 11.Catchment Dwellers-Member 16

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WSP committee con. 2. Top Level 1.GM -Coordinator 2.COL/AGM(WQ)-Team Leader 3.Add. GMM-Member 4.DGMM-Member 5.AGM(Sociology)-Member 6.RSC Chemists-Member 7.Director (Health)-Member 17

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WSP Committee Engaging the community and assembling a WSP team are an essential means to: identify the communitys aspirations and needs in respect of their water supply, through an inclusive process that considers gender as well as elderly and vulnerable community members; balance water supply needs against competing community- level priorities, such as housing and education; tap into local knowledge and experience in the identification, assessment and management of risks; 18

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WSP Committee Engaging the community and assembling a WSP team are an essential means to: identify resources within the community that can be called upon when needed; initiate a dialogue between the community and other stakeholders (government, NGOs, water service delivery and public health agencies) on the benefits and requirements of a well-functioning water supply and the joint preparation of a WSP; raise awareness of the role that community members can play in protecting and improving their water supply. 19

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Catchment 20

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21 WSP Module 02 (Task 02)

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22 Hazard (contaminant) A biological, chemical or physical property which may cause a product to be unsafe for consumption Biological - bacteria, viruses, protozoa, algae Chemical corrosion, pesticides, disinfection by products Physical pH, temperature, discolouration Radiological Hazardous Event (cause) A practice or outcome that causes the hazard to become a problem by its introduction into or proliferation in the water product WSP Module 3 (Task 03) Hazard and Hazardous Event

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Risk Matrix Severity/ Consequences No/ Minor impact Moderate Impact Major Impact Likelihood LikelyMediumHigh PossibleLowMediumHigh UnlikelyLow Medium High : High priority and requires urgent improvement in control measures Medium : Medium or long term priority and requires improvement in control measures in the medium and long term Low : Not a priority 23

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Benefits of a WSP Avoid incidents which impact public health Improved compliance with regulatory and other requirements Improved consumer trust Improved confidence of key stakeholders Cost effectiveness and investment planning Improved staff commitment Competition with peers 24

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Global Water Crisis A child dies every 15 seconds from a water-borne disease. 25

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But whole world worries about a single plane crash? 26

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Thank You 27