On average, most homeowners pay around $380 for a septic pumping in Lake In The Hills task. This amount can go as low as $190 and can go as high as $890 with the average cost falling under $280 to $520. The general cost of your septic pumping in Lake In The Hills job will depend on the size of your septic tank and how many people are in your household. Pumping a smaller septic tank can cost around $100 to $200. On the other hand, pumping out larger septic tanks that can hold up to 1,500 to 2,000 gallons of water may cost $200 to $300. If you have a large household, it may affect the cost of your septic pumping in Lake In The Hills because you may have to pump your septic pump more often.