Water Quality Unit

The ADS Water Quality unit traps hydrocarbons and removes total suspended solids to improve stormwater quality. The linear orientation makes the Water Quality Unit a great solution for applications that require shallow burial.

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Product Specifications

Water Quality Unit (WQU)
Diameter	Length	Inlet Size	Outlet Size	Treated Flow Rate cfs (L/S)	Product Code
36" (900)	20' (6.0)	10" (250)	10" (250)	1.5 (42)	3620WQA
	40' (12.1)	10" (250)	10" (250)	2.38 (67)	3640WQA
	20' (6.0)	10" (250)	10" (250)	0.7 (20)	3620WQB
	40' (12.1)	10" (250)	10" (250)	1.6 (45)	3640WQB
42" (1050)	20' (6.0)	12" (300)	12" (300)	1.79 (49)	4220WQA
	40' (12.1)	12" (300)	12" (300)	3.66 (104)	4240WQA
	20' (6.0)	12" (300)	12" (300)	0.86 (24)	4220WQB
	40' (12.1)	12" (300)	12" (300)	1.83 (52)	4240WQB
48" (1050)	20' (6.0)	12" (300)	12" (300)	2.26 (64)	4820WQA
	40' (12.1)	12" (300)	12" (300)	3.94 (112)	4840WQA
	20' (6.0)	12" (300)	12" (300)	1.13 (32)	4820WQB
	40' (12.1)	12" (300)	12" (300)	2.39 (68)	4840WQB
60" (1500)	20' (6.0)	15" (375)	15" (375)	2.95 (84)	6020WQA
	40' (12.1)	15" (375)	15" (375)	6.23 (176)	6040WQA
	20' (6.0)	15" (375)	15" (375)	1.47 (42)	6020WQB
	40' (12.1)	15" (375)	15" (375)	3.12 (88)	6040WQB

Product Details

Two weir plates act as trapping devices as the stormwater flows through surface drainage structures and into the water quality unit. This structure also incorporates the use of a bypass system, which prevents re–suspension of captured solids by diverting water flows greater than 'first flush'.

Water Quality Units are durable, lightweight structures specifically designed for fast installation and easy maintenance. Made from high–density polyethylene N–12® drainage pipe, these units are resistant to abrasives and chemicals typically found in storm water and surrounding soils. And when site conditions require higher levels of treatment, the ADS Water Quality Unit becomes an integral part of a multi–tiered approach known as the treatment train.

Water Quality Units come in 16 standard models offering 36"-60" (900-1500 mm) diameters and 20' (6m) or 40' (12m) configurations, with longer lengths available upon request.