Weholite CSO Control Chambers are manufactured and assembled off site and are designed to meet project specific requirements using a standard set of components. This improves site productivity, reduces installation time and construction materials, and provides major savings on programme costs. Chambers can be utilised as part of a Weholite attenuation system, attached to a small diameter surface water / sewerage system, or as a pipe-based Flow Control chamber or in rectangular form using Weholite Modular.