have a look at this
https://assets.publishing.service.gov.uk/media/57a089b9ed915d622c000381/61463-ODI_Adaptation_to_Climate_Change_in_WASH_Final.pdf105
and also this
and perhaps this
https://www.weadapt.org/system/files_force/water_sector_climate_change_isdb_guidance_note_c_0.pdf?download=153