Pretreatment Options

Pretreatment is important to remove sediments and reduce velocity of water prior to final stormwater disposal. The most common pretreatment devices for Cape Cod include swales, traps and inlets.

• Water Quality Swales
• Sediment Traps
• Water Qualtiy Inlets

Infiltration Devices

Infiltration devices drain water directly into the ground. Infiltration trenches and dry wells are located below ground, and directly infiltrate stormwater run-off to the soils and groundwater. Infiltration basins are above ground storage depressions. They function by storing water and allowing the water to slowly infiltrate into the ground. By vegetating a infiltration basin, bioretention is incorporated and the treatment of stormwater is greatly enhanced in a passive, inexpensive manner.

• Infiltration Trench
• Dry Well
• Vegetated Infiltration Basins and Other Bioretention Methods

Innovative Technology

There are several types of technologies that are considered innovative for stormwater treatment, which work well in the sandy soils of Cape Cod and protect its vulnerable groundwater from contamination.

• Permeable Paving Materials
• Centrifugal Devices
• Shutoff Valves