The addition of any new municipality or county may not be deemed an amendment to the articles of incorporation of the district

The total number of commissioners in a district shall be established in the articles of incorporation. The terms of commissioners who are first elected shall be: at least one - half but no more than sixty percent of the commissioners for terms of four years, and the remainder of the commissioners for terms of two years. Except for the commissioners first elected or appointed, all commissioners shall be elected or appointed for terms of four years each. However, if a vacancy occurs other than by expiration of a term, the district board shall fill the unexpired term by appointment. Each commissioner shall hold office until his successor has been elected or appointed and has qualified. Source: SL 1993, ch 259 , § 3.