As a result of high volume flows as well as anticipated further growth in the area, the Acton Wastewater Treatment Plant (WWTP) required expansion in order to service the Town of Halton Hills, and related environmental services associated with the Black Creek water quality.
In an effort to reduce the phosphorus levels of Black Creek to meet the Ministry of Environment (MOE) phosphorus level requirements, IBI also provided the preliminary design, 详细设计, contract administration and inspection services for the capacity expansion of the WWTP设施 从4.5 Megaliters per Day (MLD) to approximately 5.第一阶段有6个MLD，大约7个.第2期的MLD为0.
The expansion included new primary clarifiers, new aeration tanks and secondary clarifiers, 新的深床砂过滤器, 紫外线系统和一个新的消化系统.
