(1) The government of each district shall be vested in a board of 5 directors.
(2) The boundaries of the subdistricts shall be drawn so that each shall contain approximately an equal number of voters, except that no municipality shall contain more than 2 subdistricts, nor shall any municipality be divided unless it shall comprise more than one subdistrict.
(3) Where a district includes a municipality that contains more than 50 percent of the voters in the entire district, all of the following apply:
(a) A director at large shall be appointed.
(b) The territory in the district, other than that contained in MUNICIPAL POWER AND WATER DISTRICTS 198.103 the municipality described in sub.
(3) (intro.), shall be divided into 2 subdistricts.