While the Israelis declined to comment on the destruction of the pipeline, it is a clear that it is part of a larger strategy:
"Following a spate of demolitions targeting Bedouin communities in the occupied West Bank last year, which included the destruction of a new drinking water network supported by UNICEF, the UN’s Humanitarian Coordinator in Palestine Robert Piper warned of the risk of forcible transfer of Bedouin communities."
Israeli forces destroy UNICEF-funded water pipeline in Jordan Valley