Read the full story from the BBC.
With water levels at a record low in California, vigilantes are using social media to shame their neighbours into saving more water.
#Droughtshaming – a practice that began online last year – is back again as California enters its fourth summer of extreme drought. Residents who catch their neighbours wasting water are posting pictures and videos, often with addresses, on Facebook and Twitter as well as via apps. (It is the home of Silicon Valley, after all.)