Instructions for The Battle of the Intermittent Water Supply (BIWS) are now available The Battle of the Intermittent Water Supply is a new challenge in the Battle of the Water Networks series. Are you able to solve the problems of a network with intermittent supply? Can you get the network to have a continuous supply? You have a five-year deadline and a limited budget. See the challenge instructions (Instructions. ). Check the Q&A section frequently. There we will post the answers given by the different participants. ( Q&A)