Artarmon’s Architectural Aqueducts: The Tale of Chatswood Reservoirs

Chatswood Reservoirs
Photo Credit: Wikimedia Commons

Nestled in the bustling suburb of Artarmon, the Chatswood Reservoirs No. 1 and No. 2 stand as silent witnesses to Sydney’s evolution. These heritage-listed structures, more than mere water containers, represent a pivotal chapter in the city’s development. 



Constructed around 1888, these cylindrical, steel riveted reservoirs were instrumental in quenching the thirst of a rapidly growing population on Sydney’s North Shore. Chatswood Reservoirs No. 1 and No. 2 were critical in establishing Sydney’s North Shore water supply, playing a key role in supporting the area’s development.

Chatswood Reservoir Construction. Photo Credit: Dictionary of Sydney By Harold Arthur Blomfield  Contributed By Private collection
(Courtesy of Charles Blomfield, Wagga Wagga)


Their strategic location and design allowed these reservoirs to service multiple suburbs by gravity, demonstrating foresight in urban planning and infrastructure development.

Engineering Marvels of a Bygone Era

However, it’s not just their age that makes these reservoirs remarkable. Their design and construction are a testament to the ingenuity of late Victorian-era engineering, with their cylindrical, riveted steel construction showcasing the ingenuity of that period.

Identical in structure, the reservoirs showcase standard features of the time, such as concrete aprons, access ladders, and inlet and outlet valve chambers. What sets them apart, however, is their unique set of ladder rungs – a feature now partially removed but still evident in their historical facade.

Chatswood Reservoir. Photo Credit: Dictionary of Sydney By Harold Arthur Blomfield  Contributed By Private collection
(Courtesy of Charles Blomfield, Wagga Wagga)

The Lifeline of North Shore’s Expansion

The Chatswood Reservoirs were more than just storage units; they were crucial cogs in the machine that drove the expansion of the North Shore. 

Linked with the Upper Nepean Scheme and located at a strategic elevation of 113 meters above sea level, these reservoirs were capable of servicing suburbs like Chatswood, North Sydney, and Mosman purely by gravity. 

This feat exemplified the remarkable foresight of their creators, enabling the growth and development of these communities.

Over time, the reservoirs have adapted to meet changing needs. In the 1960s and 1970s, they were roofed to protect the water quality, reflecting an ongoing commitment to public health and safety. Recognised for their historical and cultural significance, the reservoirs were listed on the New South Wales State Heritage Register in 1999, ensuring their preservation for future generations to appreciate.

Chatswood Reservoir. Photo Credit: NSW Government

A Continuing Legacy

Today, the Chatswood Reservoirs stand not only as functional pieces of infrastructure but also as symbols of Sydney’s rich history. Despite their age, the Chatswood Reservoirs have continuously served the community, adapting to changing demands and technologies.

Their story is one of resilience, innovation, and adaptation – qualities that continue to define the spirit of Artarmon and the broader Sydney region. 



As residents and visitors pass by these unassuming structures, they may not realise the depth of history and engineering prowess that lies within. But for those who pause to look closer, the Chatswood Reservoirs offer a fascinating glimpse into Sydney’s past, anchoring the present to a time of remarkable urban transformation.

Published 23-Nov-2023