Sludge Dewatering Services

United Storm Water has been permitted with a transportable treatment unit (TTU) conditional exempt permit by the California Department of Toxic Substances Control for dewatering sludge. During the dewatering process, sediment and waste material is separated from water using the DePac™ Filtration Liner. Used with waste containers, this flexible multi-layer liner dewaters sludge in a simple and cost-effective manner.

The DePac™ Filtration Liner allows the liquid phase of the sludge to escape via a discharge valve located near the bottom of the waste container. The need for solidification agents, additional equipment and labor is eliminated. These benefits, in addition to reduced disposal volumes, result in huge savings. After the liquids have been removed, the solids remain in the container within the filtration liner and is ready for disposal.


  • Pond Sludge
  • Industrial Sludge
  • Storm Water Drain & Ditch Sludge
  • Waste Product Washing Sludge
  • Most Waste Streams Requiring Solidification


Step 1: Material is offloaded into dewatering bin.

United Storm Water vactor offloading sludge into dewatering bin

Step 2: Solids and water are separated using a flexible, multi-layer filtration liner.

The sludge dewatering proccess commences with solids and water separated using the DePac Filtration Liner

Step 3: Water is sampled and expelled from the dewatering bin, and retained solids are transported for disposal.

The final stage of the sluge dewatering process with water sampled and removed from a dewatering bin and the solids remain in the bin for transport and disposal