Page 12 - Water Pollution Management - Silty Water Treatment - Preventing Discharge

Infiltration areas

The size of the infiltration area required is a function of:

• The volume of water needing treatment
• The permeability of the ground

The infiltration area needs to be covered in vegetation.

Excessive amounts of sediment in the water being treated may
cause the soil to become blocked, reducing the rate at which
water will soak into the ground

Sand Sandy Loam Clay Silty Clay
loam loam clay

Range 25 to 250 13 to 75 8 to 20 3 to 15 0.3 to 5 1 to 10

Typical (mm/hr) 50 25 13 8 3 5
values

Typical l/s/ha 125 60 30 20 8 12 From Ciria: Control of water pollution from linear
infiltration
capacities m /hr/h 450 216 108 72 30 40 construction projects. Assuming uniform distribution
3
a over area.

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