Raw water from the Rivington chain of reservoirs can be supplied to the Thirlmere Aqueduct via a pipeline downstream of the Lower Rivington Reservoir embankment and treated water via a pumping main and the Treated Water Pumping Station on the Rivington Water Treatment Works site.
Water from the Rivington reservoir system can be sent to the Thirlmere Aqueduct, first being piped downstream of the Lower Rivington Reservoir's embankment and then treated at the Rivington Water Treatment Works before being pumped through a main to the Thirlmere Aqueduct.