Clough was selected to join the Woodman Alliance (WA21), to assist in Water Corporation Projects in collaboration with other specialised teams on projects.

Clough, as part of the Woodman Alliance, was involved in the development, upgrade, and expansion of the Woodman Point Wastewater Treatment Plant (WWTP) located in Armadale, Perth. 

The project involved upgrading the existing 125 megalitres per day primary treatment plant and a 2,800 litres per sec pump station, which is located approximately 2.7 kilometres from the plant, as both were nearing their operational capacity. 

The project involved design and construction activities of:

• The duplication of the existing inlet works, including screening and grit removal facilities. 
• A 160 megalitre per day advanced secondary treatment facility. 
• Additional sludge thickening and handling facilities. 
• A 45 megalitre reservoir for secondary treated wastewater storage. 
• Odour control facilities.
• Associated works.