The Water Treatment Plant has a rated capacity of 220,000 cubic metres per day. The low lift operating capacity of 300,000 cubic metres per day is derived from the combined Water Treatment Plant and Queen Elizabeth's low lift pumping systems. The filter capacity is rated at 278,000 cubic metres per day and the high lift pumps have a combined capacity of 431,000 cubic metres per day. (The low lift and high lift standby pumping capacities are 136,000 cubic metres per day and 139,000 cubic metres per day respectively.)

The plant also operates and maintains three reservoirs at remote locations for potable water storage. These reservoirs are used for storage as well as to provide additional pressure pumping capacity.  The 42nd Street Reservoir has a capacity of 8 million gallons and a pumping capacity of 81,000 cubic metres per day.  The Acadia Reservoir has a capacity of 12 million gallons and a pumping capacity of 145,000 cubic metres per day.  The Avenue H Reservoir has a capacity of 4 million gallons.  It utilizes the pumps at the Water Treatment Plant. 

An automatic feed control system is used to control chemical dosages in proportion to the incoming raw water flow. Lime is fed directly onto belt-type chemical feeders from four storage silos. Flow proportional belt-feeders are also used for potassium permanganate and sodium silico fluoride. Ferric sulphate and ammonium hydroxide are stored in liquid form and fed by flow proportioning pumps. Chlorine is stored in pressurized 900 kg cylinders and fed using vacuum-style gas chlorinators.

In 1992, the process control system was upgraded to a user friendly graphical interface. The computer interface provides a window to the operational process and allows the operator to control filter back-washing, pump start/stops, chemical dosage changes, and numerous other routine operational functions. The computerized system also provides remote pumping and storage facilities, controls, process alarming, data logging, and reporting functions.

A computer-based plant security system utilizing security card access and monitoring cameras was installed in 1992. All activity is monitored from the Water Treatment Plant control room with the use of a security camera monitor, computer, and logging printer.