Most single family homes will be charged a rate of $4.30 each month. Very small homes and very large homes may pay slightly lower or higher rates respectively. Other properties will be charged by the number of Equivalent Runoff Units (ERU) times the monthly charge of $4.30. An ERU is equal to 3,120 sq. ft. of impervious surface and represents the median impervious surface area found on a single family property. The number of ERUs for non-residential properties is determined by dividing the amount of the property's impervious surface by 3,120.
Single-Family Residential Lot
Total Impervious Surfaces
Percentage of ERU
(1 ERU = 3,120 sq. ft.)
to Utility Bill
Small (401 to 1,899 sq. ft.)
Medium (1,890 to 5,507 sq. ft.)
Large (Greater than 5,507 sq. ft.)
Alfred M. Brown Operations Center
850 Highway 601 South
Concord, NC 28026
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