Water, water everywhere... then not a drop to drink? Climate Change and the Water Industry Robert Krempic – Yorkshire Water

Aims Highlight some of the issues Generate debate Certainly not planning on solving climate change in an afternoon!

Climate Change “Any long-term change in the statistics of weather over periods of time that range from decades to millions of years” “It can express itself as a change in the mean weather conditions, the probability of extreme conditions, or in any other part of the statistical distribution of weather”

Climate Change – 2 Questions To what extent is climate change likely to occur? +16% What are the possible impacts on the Water Industry? There are many - here are some examples...

Impacts - Water Raw Water Availability & Quality Demand Infrastructure Reliability

Impacts - Waste Water Erratic flows and higher concentrations at pumps and works Increased Flooding & Pollution Increased Siltation Smell & Odour

Impact - Business Planning Carbon Accounting, Mitigation & Reduction Resilience of Assets Asset Lives

Impacts - Overall £ Customer Service Operational Practices Strategic Decisions Revenue & Capital £

Where does WSUG come in? Over to you! This is where the debate starts… Understand, model and advise on both the likely effects and the possible impacts of climate change When does a ‘1 in 20’ rainfall event become a ‘1 in 10’? What is the relationship between changing weather factors and raw water quality How does erratic flow at WW treatment works impact potential serviceability levels? Over to you!