Each year on March 22 we mark World Water Day. It is an opportunity to keep the urgent water issues – from lack of sanitation to transboundary water to climate change -- top of my mind for practitioners, decision makers and the global public. In the coming days we will post here updates and stories from the field, as well as links to some of our partners’ content. But, more importantly, this is an opportunity to hear from you, too.
Whether you'll be attending the upcoming World Water Week in person or following online, there's a lot to look forward to this year. This year's theme focuses on Energy and Water and along with Sustainable Energy for All (SE4ALL) and the International Union for Conservation of Nature (IUCN), The World Bank Group is excited to join as a collaborating partner.
The theme of this year’s #worldwaterday focuses on water and energy. And for good reasons.
For the last six years, a power plant in San Luis Potosi, Mexico has bought water from a nearby wastewater treatment plant to use in its cooling towers (instead of using freshwater). This operation, Project Tenorio, a public-private partnership, continues today and has already resulted in the reduction of groundwater extraction of at least 48 million cubic meters (equivalent to 19,000 Olympic size pools) and increased aquifer sustainability.
This is a good example of the water and energy nexus in practice: the wastewater treatment plant covers almost all of its operating costs from this additional revenue stream and the power plant gets a more reliable water source that is also 33% cheaper than groundwater in that area.
Treated wastewater has been used to reduce the water requirements of power plants in several other countries as well, as water supply becomes more variable or disappears. In the US, for example, around 50 power plants are using treated wastewater for cooling in order to adapt to water shortages. However, innovative integrated approaches like these are still more of an exception than the norm.
After an intense and exciting week in Stockholm for World Water Week, it is time to look back at some conclusions of the conference and the way forward for next year. I was in Stockholm as a “Lead Rapporteur” and reported in the closing plenary session on “Cooperation to achieve equity by balancing competing demands”; other teams reported on “Managing waters across borders,” “Responding to Global Change,” and “Closing the science-policy-practice loop” (see closing plenary here). This is my attempt to summarize over 100 sessions, you can find all the sessions in the WWW website.
Given that World Water Day, March 22, is not even underway in a large part of the world, at the time of this writing, the amount of World Water Day coverage is no small thing. Here is how World Water Day (eve) has unfolded across the World Bank’s social media and websites.
This year’s World Water Day (March 22) focuses on cooperation around water, so it’s a good time to reflect on lessons that those of us working on cooperation in international waters can learn from the experiences and accomplishments in water cooperation in the Nile Basin.