Are Water extinguishers required to have a 5 year discharge in BS5306-3, i was always under the impression that they did but our latest extinguisher company who completed our most recent annual inspections state that water (and powder) extinguishers are not required to have a 5 year discharge under BS5306-3. can anyone confirm either way, feels nice that the company are not selling something that's not required if that is the case....