Resilience　evaluation　of　infrastructure　system　provides　an　essential　basis　for　the　resilience　enhancement　and　disaster　mitigation　of　urban　communities.　This　study　presents　a　seismic　resilience　evaluation　model　for　water　supply　network　that　integrates　the　hydraulic　with　water　quality　simulation.　The　seismic　damage　scenarios　of　water　supply　network　are　generated　according　to　seismic　fragility　model　of　pipelines　and　the　Monte　Carlo　simulation,　and　the　post-earthquake　recovery　of　pipeline　damages　is　simulated　by　dynamic　importance-based　recovery　sequence.　The　negative　influence　of　earthquake　hazard　on　water　quality　is　investigated　by　the　chlorine　concentration　reduction　of　water,　which　depends　on　the　changes　in　water　age　and　supply　path　caused　by　pipeline　damages.　The　water　supply　of　user　nodes　without　quality　deterioration　after　earthquakes　is　used　as　the　water　quality　performance　index　of　water　supply　network.　The　proposed　evaluation　model　is　implemented　in　two　benchmark　water　supply　network　with　different　layouts.　Application　results　show　that　the　water　losses　of　pipeline　damages　lead　to　water　flow　increases　and　greater　chlorine　concentration　in　its　upstream　pipelines,　and　lead　to　prolonged　water　supply　path　and　smaller　chlorine　concentration　in　its　downstream　pipelines.　The　water　quality　resilience　of　water　supply　network　tends　to　be　lower　than　that　of　hydraulic　services,　and　the　relative　difference　between　hydraulic　and　water　quality　resilience　is　affected　by　the　layout　and　operating　rules　of　water　supply　network.　In　the　application　case　of　water　supply　network,　the　relative　difference　of　seismic　resilience　loss　calculated　by　water　quality　and　hydraulic　ranges　from　17%　to　286%,　and　there　is　a　large　difference　between　hydraulic　and　water　quality　resilience　of　water　supply　network　whose　operating　rules　are　complex　and　contain　regulating　tanks.　©　2024　Editorial　office　of　Earthquake　Engineering　and　Engineering　Dynamics.　All　rights　reserved.