Pymble Reservoir No.1 (Covered) (WS 97) is a circular brick covered reservoir with an octagonal brick entrance chamber constructed at the centre of its roof. The entrance chamber has a concial Marseilles tile roof. The reservoir has cast iron roof ventilation caps, as at Petersham Reservoir (Covered) (WS 89), Waverley Reservoir No. 1 (Covered) (WS 132) and the Randwick Reservoir (WS 001). Adjacent to the reservoir, on the Telegraph Road frontage is an octagonal valve house, of rendered brick, with parapet and flat roof. The valve house has a steel grated floor and an access ladder to the valve below. Plantings include oleander. The site is occupied by the Pymble Bowling Club clubhouse, while the adjacent covered reservoir (Pymble Reservoir No. 2 (Covered) (WS 98)) is used as the bowling green for the club. The recreational and open space usage of the roof of the reservoir is a historical and important feature of most covered reservoirs. The full service level of Pymble Reservoir No.1 (Covered) (WS 97) is and its capacity is . Reservoir No. 2 Pymble Reservoir No. 2 (Covered) (WS 98) is a fine example of a concrete covered reservoir in an earthen embankment, or partly excavated into rock. The roof of the reservoir is grassed over and is now used as bowling greens by Pymble Bowling Club. The only apparent sign of the covered reservoir from the bowling greens is the pair of ventilation shafts in the likeness of cast iron gateposts, similar to those erected at Waverley Reservoir No. 2 (Covered) (WS 133). The recreational and open space usage of the roof of the reservoir is a historical and important feature of most covered reservoirs. The south side of the reservoir is the location for three valve houses, one large example, central to the side, with two smaller valve houses flanking it. Each valve house is constructed in rendered brick, with parapet and flat roof, the walls cut into the embankment of the reservoir. All the valve houses contain original valves and control gear. The main valve house contains provision for six valves and control mechanisms, some of which have been updated. The two flanking valve houses have a pair of valves and control gear. The original valve control gear is similar to that at Petersham Reservoir (Covered) (WS 89). The full service level of Pymble Reservoir No. 2 (Covered) (WS 98) is and its capacity