A district may by resolution of a four-fifths majority of its directors obtain membership in associations having for their purpose the furtherance of subjects relating to the powers and duties of the district and for the interchange of information relating to such powers and duties. Funds necessary for such purposes may be appropriated.

The Legislature hereby finds and declares that the provisions of this section are declaratory of existing law except insofar as they specify that a resolution of a four-fifths majority of the directors is necessary.