This post was co-authored with Jose Carlos Lombana, co-founder of Sistemas de Captación de Agua Pluvial (SCAP).
This story is part of the “Aqueduct Sneak Peek” series. Aqueduct Sneak Peek provides an early look at how various stakeholders can use Aqueduct’s updated global water risk maps, which will be released in January 2013. Read more posts in this series.
A study by scientists at The Nature Conservancy and other institutions estimates that by 2050, more than 1 billion city dwellers may be living on less than one bathtub’s worth of water a day. While this and other water risks are undeniably troubling, they can be overcome in many cases. With the right data and innovation, entrepreneurs can turn these risks into business opportunities.
Rainwater Harvesting Solutions in Mexico City
Mexico City, the biggest metropolis in the Western hemisphere, faces significant water shortages, leaving many domestic, agricultural, and industrial users exposed to severe water-related risks. The city was built on the foundations of the Aztec capital, on the bed of Lake Texcoco. Today, centuries later, its groundwater supplies are rapidly diminishing, and it relies on a network of reservoirs and decaying infrastructure to pump in water from hundreds of miles away. Furthermore, urban growth and climate change are pushing Mexico City’s water supply to the edge. Reservoirs were dangerously low during the 2009 drought, leading the government to cut off water in some areas of the city.
Aqueduct’s overall water risk map for Mexico, with Mexico City pinpointed. Red areas indicate regions facing the most severe levels of water risk.
While the situation in Mexico City is undeniably alarming, these risks can also create new opportunities for businesses to prosper by delivering innovative solutions to water scarcity. In 2012, four entrepreneurs in Mexico City founded Sistemas de Captación de Agua Pluvial® (SCAP®), a company providing rainwater harvesting solutions. Harvesting rainwater and storing it for later use is an increasingly popular solution to unpredictable and limited water supplies. From a backyard rain barrel for lawn watering to the massive network of rainwater storage tanks that China's Gansu province uses to provide drinking water to 1.3 million people, rainwater harvesting is being used in a wide range of scales and geographies.
SCAP helps its clients in Mexico overcome unreliable and limited water supply by designing and installing efficient, affordable rainwater collectors. SCAP has already completed a project in Colonia Florida and is planning additional installations in El Pedregal and Mixcoac. By collecting rainwater, SCAP clients can cut back on the cost of water and store freshwater for times of shortages.
Using Maps to Track and Evaluate Water Risks and Opportunities
To better understand water-related risks in Mexico City and how they compare to the rest of the country, SCAP used a preview version of Aqueduct’s forthcoming improved global water risk maps. Aqueduct’s granular and comprehensive maps of water scarcity, supply variability, and groundwater stress (among other indicators) helped SCAP target and inform clients in central Mexico on areas most in need of solutions. Having this up-to-date data in a widely accessible format allowed SCAP to turn water risk into business opportunities—in turn, helping Mexico’s citizens meet their water needs.
Other entrepreneurs and solution-providers around the world can equally benefit from Aqueduct’s publicly available and comprehensive information. By having this extensive data at their fingertips, businesspeople and other decision-makers can target new markets for opportunities and improve water resource management across the globe.
Aqueduct will launch an updated version of its water risk maps in January 2013. Learn more about the updates.