A sur­charge is here­by imposed at a rate of One Dol­lar ($1.00) per month in-ser­vice net­work con­nec­tion, oth­er than those net­work con­nec­tions assigned to the Coun­ty, where the sub­scribers ser­vice address for each net­work connection(s) are locat­ed with­in the cor­po­rate lim­its of the Coun­ty.  The “ser­vice address” shall mean the loca­tion of the subscriber’s pri­ma­ry use of the net­work connection(s).  A net­work con­nec­tion shall not be deemed in-ser­vice where a subscriber’s account is uncol­lectible.