SludgeHammer S-400

The SludgeHammer S-400 is a system designed for single-family residences with up to 400 gallons of wastewater per day (GPD). This system should be used wherever advanced treatment is necessary.


The SludgeHammer is certified to meet Class 1 treatment standards when tested by NSF International. The SludgeHammer S-400 model treats domestic wastewater loads up to 400 gallons per day and consists of the basic SludgeHammer® ABG column installed in the inlet chamber of a 1,500 gallon double compartment standard septic tank.

Air is delivered to the SludgeHammer column where it is then distributed into the column through a micro fine-bubble diffuser. As the air rises, it displaces liquid in the column which circulates with liquid entering the column at the base and leaving at the top. A packet of proprietary SludgeHammer Blend™ bacteria and enzymes is introduced into the unit and held in a central refuge where it is supplied with a continuous stream of aerated liquid.

This model series is certified through NSF 40, Class 1 as Advanced Treatment Units. Treating loads of 400 gallons per day, they provide the most economical and effective treatment on the market.

The SludgeHammer S-400 is part of our residential wastewater treatment product line.

Call SludgeHammer for specs and special orders!

This business exceeded all of my expectations with its outstanding service, quality work ethic and positive contribution to the environment! I couldn’t have hired a better business to take care of my sewer system. SludgeHammer will be my first call if I need any septic repairs in the future! Thank you!!