To　examine　the　impact　of　promoting　transformative　hydrogen-based　technologies　on　water　demand　in　traditional　high-energy　and　highwater-consuming　sectors　under　the　carbon-neutral　transition,　this　study　investigates　the　industrial　sector　transformation　path.　It　compares　the　water　consumption　of　current　production　processes　with　future　hydrogen-based　and　advanced　water-saving　technologies.　By　developing　a　model,　the　study　analyses　the　water-saving　potential　of　54　water-saving　and　hydrogen-based　technologies　across　three　water　consumption　scenarios　and　evaluates　their　impact　on　industrial　water　use.　This　study　highlights　the　pivotal　role　of　water-saving　technologies　in　transforming　industrial　sectors,　particularly　in　the　paper　and　textile　industries,　where　zero-emission　technologies　have　considerably　reduced　water　demand.　Water　savings　in　the　paper　industry　are　projected　to　increase　from　24.29　Mt　in　2025　to　101.44　Mt　in　2050,　representing　an　8.5%　increase.　In　the　chemical　fibre　sector,　additional　water　savings　are　expected　to　reach　106.93　Mt　by　2050,　with　an　11.6%　increase　in　water-saving　efficiency.　Similarly,　the　textile　dyeing　and　finishing　sector　is　anticipated　to　achieve　an　additional　water　saving　of　26.45　Mt　by　2050,　corresponding　to　a　17.5%　improvement.　The　findings　indicate　that　the　adoption　of　hydrogen-based　technologies　will　considerably　reduce　water　consumption　in　traditionally　high-water-consuming　industries　such　as　steel,　synthetic　ammonia,　ethylene,　and　methanol.　This　reduction　becomes　particularly　evident　by　2050　under　the　baseline　pathway　and　low　water　consumption　scenarios,　in　which　the　impact　of　water-saving　technologies　becomes　less　prominent.　By　2050,　water　consumption　in　the　steel,　ethylene,　synthetic　ammonia,　and　methanol　industries　is　projected　to　decrease　to　985.93,　59.11,　242.4,　and　268.29　Mt,　respectively.　These　findings　highlight　the　potential　of　hydrogen-based　technologies　in　advancing　water　conservation.　By　2050,　the　chemical　industry　is　projected　to　reduce　water　stress　by　transitioning　from　traditional　water-saving　technologies　to　the　integration　of　automation　and　hydrogen-based　solutions.