The City of Mississauga required that CVC install a separate CSA-compliant water recirculation system on the third floor. This system draws rooftop rainwater through the recirculation line that is immediately upstream of the east modulating control valve. The following are the main treatment components found on the third floor: | The City of Mississauga required that CVC install a separate CSA-compliant water recirculation system on the third floor. This system draws rooftop rainwater through the recirculation line that is immediately upstream of the east modulating control valve. The following are the main treatment components found on the third floor: |