At the water point, any user should be able to operate the water drawing mechanism and to collect water. A handpump can easily be made accessible through some adaptations:
The handpump should be sited close to the edge of apron, in order to be reachable from outside apron;
Minimise difference in apron height to enable wheelchairs to wheel into the apron if necessary;
If the apron is built in concrete, it should be roughened to avoid being slippery when wet (slippery floor can be prevented via a good drainage slope).
Concerning the water point location, keep in mind to plan for a suitable safe accessible location for the pump, either for women and men with or without disabilities.