What maintenance costs can be expected with each type of system? The table below shows what the typical maintenance costs will be for an Aerobic System and a Low Pressure Dosing (LPD) system.
Assumptions:
 This cost comparison is over a 10 year period
 Average usage  240300 Gallons Per Day usage
 Reasonable care taken of system, to avoid damage. Neglect will increase these costs



Quantity 
Cost 
Quantity 
Cost 
Pumping

2x (Every 5 years) 
$350 Each 
2x (Every 5 years) 
$250 Each 
Service Policy 
8x (Every year after first 2) 
$200 Each 
None 
$0 
Aerator Replacement 
1 (Typical 610 year lifespan) 
$350 Each 
None 
$0 
Water Pump Replacement 
1 (Typical 610 year lifespan) 
$350 Each 
1 (Typical 610 year lifespan) 
$375 Each 
Chlorine

12 10# per year 
$70150/Year 
None 
$0 
Electrical Usage

3.2 KWhr per day @ $0.13/KWhr 
$150/Year 
0.2 KWhr Per Day @ $0.13/KWhr 
$7.5/Year 





10 year total


$6,000 
$950 

Annual Average


$600 

$95 