A Swedish study has found domestic water pipes are crawling with bacteria. However, this is not your bad kind of bacteria but your good kind of bacteria as they are thought to help purify the water. They appear to thrive in pipes and taps and in water treatment plants – go to http://phys.org/print369482206.html
Over at http://phys.org/print369482244.html … we learn that photovoltaic solar panels in Valencia in Spain harbour well adapted microbial communities of bacteria and fungi and these have more in common with those usually found in deserts rather in a Mediterranean city.