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.

Water Quality Unit

Water Quality Unit

WQU Install

WQU Install

WQU Install

WQU Install

WQU Install

WQU Install

Water Quality Unit
WQU Install
WQU Install
WQU Install

Overview

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.

Features and Benefits

  • Light weight
  • Horizontal design for minimal depth excavation
  • 80% TSS removal
  • 80% oil and grease removal
  • Short order lead time

Product Specifications

ADS HDPE Water Quality Unit (WQU)
Product Number 3620WQA 3640WQA 3620WQB 3640WQB T4220WQA 4240WQA 4220WQB 4240WQB 4820WQB 4840WQB 6020WQA 6040WQA 6020WQB 6040WQB
Diameter in. (mm) 36 (900) 36 (900) 36 (900) 36 (900) 42 (1050) 42 (1050) 42 (1050) 42 (1050) 48 (1200) 48 (1200) 60 (1500) 60 (1500) 60 (1500) 60 (1500)
Length ft. (m) 20 (6) 40 (12) 20 (6) 40 (12) 20 (6) 40 (12) 20 (6) 40 (12) 20 (6) 40 (12) 20 (6) 40 (12) 20 (6) 40 (12)
Inlet Size in. (mm) 10 (250) 10 (250) 10 (250) 10 (250) 10 (250) 12 (300) 12 (300) 12 (300) 12 (300) 12 (300) 12 (300) 15 (375) 15 (375) 15 (375) 15 (375)
Outlet Size in. (mm) 10 (250) 10 (250) 10 (250) 10 (250) 12 (300) 12 (300) 12 (300) 12 (300) 12 (300) 12 (300) 15 (375) 15 (375) 15 (375) 15 (375)
Treated Flow Rate 1.5 (42) cfs (L/S) 1.5 (42) 2.38 (67) 0.7 (20) 1.6 (45) 1.75 (49) 3.66 (104) 0.86 (24) 1.83 (52) 1.13 (32) 2.39 (68) 2.95 (84) 6.23 (176) 1.47 (42) 3.12 (88)
Sed. Vol. ft.3 (m3) 65 (1.8) 137 (3.9) 65 (1.8) 137 (3.9) 83 (2.3) 175 (5.) 83 (2.3) 175 (5.) 116 (3.3) 245 (6.9) 183 (5.2) 385 (10.9) 183 (5.2) 385 (10.9)
Oil Vol. ft.3 (m3) 30 (0.8) 63 (1.8) 30 (0.8) 63 (1.8) 38 (1.1) 81 (2.3) 38 (1.1) 81 (2.3) 55 (1.6) 115 (3.3) 87 (2.5) 184 (5.2) 87 (2.5) 184 (5.2)
Sieve Size 140 140 200 200 140 140 200 200 200 200 140 140 200 200

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