(1) For the purposes of this Act discrimination includes a refusal or failure by the provider of a service to do all that is reasonable to accommodate the needs of a person with a disability by providing special treatment or facilities, if without such special treatment or facilities it would be impossible or unduly difficult for the person to avail himself or herself of the service.

(2) A refusal or failure to provide the special treatment or facilities to which subsection (1) refers shall not be deemed reasonable unless such provision would give rise to a cost, other than a nominal cost, to the provider of the service in question.

(3) A refusal or failure to provide the special treatment or facilities to which subsection (1) refers does not constitute discrimination if, by virtue of another provision of this Act, a refusal or failure to provide the service in question to that person would not constitute discrimination.

(4) Where a person has a disability that, in the circumstances, could cause harm to the person or to others, treating the person differently to the extent reasonably necessary to prevent such harm does not constitute discrimination.