(1) The department shall administer a drinking water program which includes, but is not limited to, those program elements necessary to assume primary enforcement responsibility for part B, and section 1428 of part C of the federal safe drinking water act. No rule promulgated or implemented by the department of health or the state board of health for the purpose of compliance with the requirements of the federal safe drinking water act, 42 U.S.C. § 300f et seq., shall be applicable to public water systems to which that federal law is not applicable, unless the department or the state board determines that such rule is necessary for the protection of public health.

(2) The department shall enter into an agreement of administration with the department of ecology and any other appropriate agencies, to administer the federal safe drinking water act.

(3) The department is authorized to accept federal grants for the administration of a primary program.