1) Minneapolis is leading the charge in natural pool filtration. The first public pool which filters its water using plants and microbes from a nearby regeneration pond is set to open on July 24th.
2) NASA scientists developed a technique using satellites in the Gravity Recovery and Climate Experiment (GRACE) to measure the mass of water underground and how the aquifers are changing over time. The data is significantly improved over previous techniques but unfortunately the scientists found that aquifers all over the world are being depleted faster than previously thought.
3) Chicago’s Deep Tunnel, with a 2.3 million gallon capacity for storing water during storm events, has run out of room to help mitigate combined sewer overflows. The Metropolitan Water Reclamation District is converting a 160 year old open-pit limestone mine called Thorton Quarry into a holding tank which will have more than triple the capacity of the Deep Tunnel at 7.9 billion gallons when it’s put into operation later this year.
4) Biologists at the Ruhr-Universität Bochum (RUB) in Germany have optimized the use of a short characteristic segment of DNA to analyse fast moving water. This will hopefully be a step towards real-time detection of biological contamination in water.
(Photo: Kristen Brastad)