Israel has gone through one of the driest winters in its history, but despite the lean rainy season, the government has suspended a longstanding campaign to conserve water.The familiar public messages during recent years of drought, often showing images of parched earth, have disappeared from television despite weeks of balmy weather with record low rainfalls in some areas. The level of the Sea of Galilee, the country’s natural water reservoir, is no longer closely tracked in news reports or the subject of anxious national discussion. The reason: Israel has in recent years achieved a quiet water revolution through desalination. With...