New Jersey Statutes Title 26. Health and Vital Statistics 26 § 3A2-5

a. A county board of health shall consist of not less than five nor more than nine members appointed by the board of chosen freeholders.  No more than two members of a county board of health may be members of the board of chosen freeholders.  Members other than freeholders shall be selected, with due regard to their knowledge, interest in health affairs, from participating municipalities so that each of the participating municipalities, where possible, shall have at least one member on the county board of health.

b. Each member of a county board of health shall be appointed for a term of 3 years;  provided, however, that of those first appointed at least two shall have terms of 1 year, at least two shall have terms of 2 years and the remaining members shall have terms of 3 years;  provided that where the board consists of nine members appointments shall be made so that at least three terms shall expire each year.  All appointments shall designate the date of expiration of the term.  The term of office of a freeholder member shall terminate with his term of office as freeholder should this date precede the termination of his appointment to the board of health and a freeholder designated as a successor in such case shall be appointed for the unexpired term.

c. The county board of health shall meet not less than bimonthly and shall exercise within its area of jurisdiction all the powers granted to a local board of health.