In terms of durability, the lifespan of a macerator pump depends on how much it's used. More recent macerator pumps can last up to 15 years when used sparingly, while those used regularly may need replacing after 10 years. A macerator used daily – in your home, for example – should last for around 10 years.

The macerator pump uses a stainless steel fast-rotating cutting blade to convert solids and fluids into a fine slurry that is discharged under pressure through small-diameter piping (¾-inch or 1-inch) and expelled into the sewage line or septic tank.

The centrifugal force causes the reduced solids to be ejected through a grill into the container where it is picked up by the impeller pump mounted beneath the motor. The unit pumps the effluent upward to 15 feet and/or 150 feet horizontally (with gravity fall).

Grinder pump systems are similar to macerators and use the same technology. However, a grinder contains a stainless steel blade that can grind solid waste, toilet paper, and sanitary items such as cotton swabs and tampons. While a macerator can grind small solids, a grinder can handle medium and large solids.