(b) Salaries of the board members are:

1. (1) For districts with fewer than six hundred customers, up to $100 per attendance at regular monthly meetings and $75 per attendance at additional special meetings, total salary not to exceed $2,000 per annum;
2. (2) For districts with six hundred customers or more but fewer than two thousand customers, up to $125 per attendance at regular monthly meetings and $100 per attendance at additional special meetings, total salary not to exceed $3,250 per annum;
3. (3) For districts with two thousand customers or more, but fewer than four thousand customers, up to $150 per attendance at regular monthly meetings and $100 per attendance at additional special meetings, total salary not to exceed $4,500 per annum; and

4. (4) For districts with four thousand or more customers, up to $200 per attendance at regular monthly meetings and $150 per attendance at additional special meetings, total salary not to exceed $6,400 per annum.

   The public service district shall certify the number of customers served to the Public Service Commission on July 1 of each fiscal year.

(c) Public service districts selling water to other water utilities for resale or public service districts which provide sewer treatment for other sewer utilities may adopt the following salaries for its board members:

1. (1) For districts with annual revenues of less than $50,000, up to $100 per attendance at regular monthly meetings and $75 per attendance at additional special meetings, total salary not to exceed $2,000 per annum;
2. (2) For districts with annual revenues of $50,000 or more, but less than $250,000, up to $125 per attendance at regular monthly meetings and $100 per attendance at special meetings, total salary not to exceed $3,250 per annum;
3. (3) For districts with annual revenues of $250,000 or more, but less than $500,000, up to $150 per attendance at regular monthly meetings and $100 per attendance at additional special meetings, total salary not to exceed $4,500 per annum; and

4. (4) For districts with annual revenues of $500,000 or more, up to $200 per attendance at regular monthly meetings and $150 per attendance at additional special meetings, total salary not to exceed $6,400 per annum.

   The public service district shall certify the number of customers served and its annual revenue to the Public Service Commission on July 1 of each fiscal year.