What we found
Of the 603 water facilities we analysed, 53% appeared to have been damaged or destroyed since 7 October.
A further 43 facilities were in areas that showed some damage or where solar panels had been removed, but we were unable to determine whether the water facility itself had been damaged so these were not included in our analysis.
The latest available satellite images were acquired in March and April, and our analysis has been ongoing since April.
The majority of sites identified as destroyed or damaged are in northern Gaza or in the area around the southern city of Khan Younis.
At one wastewater facility in Bureij, in the centre of the Strip, solar panels that power the plant had been obliterated and sewage treatment tanks appeared to have algae growing on the surface.