Cooks River Sewage Aqueduct

Item details

Name of item: Cooks River Sewage Aqueduct
Type of item: Built
Group/Collection: Utilities - Sewerage
Category: Sewage Aqueduct
Location: Lat: -33.9224676255 Long: 151.1479282650
Primary address: Pine Street, Undercliffe, NSW 4380
County: Cumberland
Local govt. area: Canterbury-Bankstown
Local Aboriginal Land Council: Metropolitan
Property description
Lot/Volume CodeLot/Volume NumberSection NumberPlan/Folio CodePlan/Folio Number
LOT3810DP1142
LOT3910DP1142
LOT4010DP1142
LOT1 DP745578

Boundary:

The curtilage includes the whole aqueduct structure inclusive of supporting structure in embankment. Includes 1929 pipe. Refer to Heritage Council Plan 2012.
All addresses
Street AddressSuburb/townLGAParishCountyType
Pine StreetUndercliffeCanterbury-Bankstown CumberlandPrimary Address
Thornley Street (off)MarrickvilleInner West  Alternate Address

Owner/s

Organisation NameOwner CategoryDate Ownership Updated
Sydney WaterState Government27 Nov 98

Statement of significance:

The Cooks River Valley sewage aqueduct, completed in 1895, is an integral and highly visible component of the original Main Western Carrier (now part of Southern and Western Suburbs Ocean Outfall Sewer System), which was one the Board's major early sewerage schemes. The aqueduct being a combination of brick arches and steel bridges is an excellent and rare example of a late-nineteenth steel truss bridge (in non railway construction), and decorative face brick work in NSW. The two original sewer carriers are likely to be rare examples of large diameter, long run wrought iron pipes used for such a purpose. Elements of significance are past and ongoing use, construction technologies and setting with the Cooks River valley (inclusive of views).
Date significance updated: 21 Apr 05
Note: The State Heritage Inventory provides information about heritage items listed by local and State government agencies. The State Heritage Inventory is continually being updated by local and State agencies as new information becomes available. Read the Department of Premier and Cabinet copyright and disclaimer.

Description

Designer/Maker: Sewerage Construction Branch, Department of Public Works
Builder/Maker: J.F. Carson, contractor
Construction years: 1895-1895
Physical description: Aqueduct:
The aqueduct comprises the sewer carrier of three 1.8 m. diameter wrought iron and steel pipes supported on a series of brick arches, and steel bridges. The brick arches are particularly decorative, being white glazed face bricks laid in English bond with decorative motifs picked out in red coloured brick. The springing points of the arch and cornice are constructed of dressed sandstone. The sewer carrier emerges from the brick faced northern abutment below Thornley Street, Marrickville crossing the river by the steel trusses and then continuing further across the river and Wanstead Reserve by brick arches to embankment at the end of Wanstead Avenue, Undercliffe. The northern most terrestrial arch is used as a public path. The original contract drawings indicate that the original river crossing entailed only the two 80ft. steel bridges, today it also requires 2 1/2 spans of the brick arches. The aqueduct is a major built item in the Cooks River valley basin.

Cottages:
58 Thornley Street:
Grounds:
The residence at 56-58 Thornley Street is set back somewhat deeper than the alignment of neighbouring properties. Within this setback is a moderately vegetated, landscaped setting with mature trees and low-level plantings. The landscaping is enhanced with profiled garden beds. An unusual and possibly unique feature of the landscaping is the use of glazed ceramic electrical "Edison caps" set in concrete to form the garden bed retaining wall. On the western side of the property, more brick garden beds are in place (ibid, 2018, 12).

The house occupies the eastern half of the site. The western half of the site is generally undeveloped. A rendered brick wall divides the eastern and western halves of the property (ibid).

The property slopes gently down from Thornley Street to the middle of the residence. The gradient then drops steeply southward to the riverbank which is inaccessible and overgrown. Access to the aqueduct is via the western half of the property, down the end of the driveway to the far west of the building, separated by a chain link fence (ibid).

Federation cottage with simplistic design elements typical of late 19th Century Federation workers cottages common throughout Marrickville and Sydney's inner west, which housed workers from the booming local industry in the area Extent Heritage, 2018, 9). Painted face brick with external timber and tile detailing, set into a natural embankment of the Cooks River (ibid, 2018, v).

The split-level dwelling is built into the steep embankment of the river. The residence consists of a typical Federation cottage, dated to 1899. The dwelling was originally face brick, however, it has been painted. The hipped roof is clad with terracotta Marseilles tiles, terracotta ridge tiles and rams-horn finials. The roof also features two chimneys of painted brick with brick corbels and terracotta chimney pots (ibid, 2018, 12).

The front facade (facing Thornley Street) is modest in design. It is a single-fronted facade, symmetrical with a French door in the centre. Unusually, there are no windows on this front facade. There is a small verandah supported by ornamental timber brackets and turned timber posts with capitals. The verandah has exposed rafter ends. The verandah floor is a concrete slab, lined to give the appearance of tiles, and painted. This element shows some signs of disrepair, with cracks in the flooring (ibid).

Although the front faade has a French door opening, this appears to be an access between the verandah and the formal lounge. The main entrance is actually at the northeast corner of the building. Around the house are timber double-hung sash windows, as well as hinged casement windows (ibid).

Interior:
The original 1899 Federation interiors remain largely intact, with typical decorative features like ornate plaster ceiling roses, decorative moulded cornices, skirtings, arches and corbels still extant throughout most rooms. All original fireplaces, with timber and marble surrounds and original iron grilles are still in place. These internal features appear to be in an overall good condition (ibid, 2018, 15).

Based on original MBWS drawings of the building, the original internal floor plan is largely intact (see Figure 25). Some modern refurbishments have been applied including a bathroom and kitchen refurbishment (ibid).
Modifications and dates: 1935: renovations to 58 Thornley Street cottage:

1981 - 1984:
The barrels were overhauled and the surface of the cast iron pipes was coated with a modern fibre-glass lining. The steelwork on the two bridge spans has been replaced where necessary. Fencing at either end of the carrier to prevent trespass.
Current use: Sewage aqueduct
Former use: Aboriginal land, farm, Sewage aqueduct

History

Historical notes: Aboriginal occupation:
Prior to European settlement the Cooks River Valley was the home of a number of clans of the Aboriginal people. The Gameygal lived on the northern side of Botany Bay, between present day La Perouse and the mouth of the Cooks River. To the north of the Cooks River between South Head and present day Darling Harbour lived the Cadigal people and the Wangal people lived in an area between the Parramatta River and the Cooks River from Darling Harbour to Rose Bay. To the south of Botany Bay in the coastal area including Kurnell and Cronulla and the south coastal strip to Nowra lived the Gweagal people. While there is some argument about the location of land of the Bidiagal clan, there is some evidence that this clan lived in the area between the southern bank of the Cooks River and the northern bank of the Georges River. It is also thought the Cooks River formed the boundary between two dialect groups, the Bidiagal and the Gweagal. Previous reports on the Aboriginal past of the area have suggested that it was occupied by the Bidiagal. (Tranby Aboriginal Co-operative College, 1986; King, 1999; McDonald, 2005). The potential association of the Bidiagal people should not be discounted as a result of this lack of historical detail as after the collapse of the clan structure due to the smallpox epidemic of 1788 and general impact of European invasion, individuals travelled beyond the pre-1788 traditional boundaries. It is thought that the warmer months were spent nearer the coast and the cold months of winter were spent further inland. (Muir L 2007 Cooks River Valley Thematic History)

Due to the impact of the arrival of European colonists from 1788 and the almost immediate impact that this had on established patterns of subsistence, our knowledge of the Aboriginal people of the Sydney district is limited. Some eight individual groups or clans within the vicinity of the Parramatta area have been identified and two, the Cadigal and Wangal, most likely lived in the area that now makes up the Ashfield municipality (Attenbrow, V. & Pratten, C., quoted in SWC, 2005, 5).

Aboriginal people lived along the Cooks River for thousands of years prior to European arrival...The Cadigal and Wangal peoples made use of the land and seasons to hunt, trap, fish and forage for fruit and plants. As firestick farmers, they burned off scrub near rivers leaving only large trees spaced several meters apart, creating an open, park-like appearance (Marrickville Council website, quoted in ibid, 2005, 5).

While land closer to the town of Sydney was relatively quickly carved up as land grants to settlers in the first years of the European colony, the land on the southern side of the Cooks River was not subject to land granting until 1904. It was not until 1808 when a number of very large land grants were made over land which traditionally provided Aboriginal people access to the resource rich area of the Georges River, Kurnell Bay and Salt Pan Creek that land became the reason for conflict between the Bidiagal and European settlers. In 1809, an attack was made on two farms at Punchbowl led by a Bidiagal man named Tedbury. Tedbury was the son of Pemulway who had led perhaps the best-known campaign of resistance in the Sydney Basin including a spear attack on Governor Phillip's game keeper, a man renowned for his hostility to the Aboriginal people of the Sydney area. Pemulway and Tedbury spoke the Bidiagal dialect, and are known to have come from around Botany Bay (King, 1999)

The attack at Punchbowl was the last reported act of Aboriginal resistance to European settlement in the Cooks River Valley. In the following years due to alienation from their land and its resources and being subject to the devastation of European infectious diseases, the Aboriginal population in the area dramatically reduced. In 1845 it was reported to the NSW Legislative Select Committee that there were only 3 people of the Botany Bay clan and only fifty Aboriginal people were living in the area between the Cooks and Georges River. (Muir, L., 2007, Cooks River Valley Thematic History).

During the 19th Century European settlers transformed the land along both banks of the Cooks river as farms were established for grazing, family food needs and for other industries such as tanning, production of sugar, harvesting of timber and production of lime from many middens left by the Aboriginal people of the area for thousands of years. Lime was a scarce and necessary commodity for European settlement in the early years of the colony. (Renwick, C., Pastorelli, C., Muir, L., Sheppard, H., Denby, J., Chalcroft, G., 2008, Cooks River Interpretation Strategy).

Post-contact, the stretch of land between Iron Cove and the Cook's River was known as the Kangaroo Ground, the natural woodland would have provided a suitable habitat for possums, fern rhizomes and tubers, all of which would have been identified as valuable food sources for the Wangal (Pratten, C., quoted in SWC, 2005, 5).

Canterbury:
The first European land grant in this suburb...was of 100 acres to a "very good, pious, inoffensive man", the Reverend Richard Johnson (1753-1827), the colony's first chaplain, in 1793. He called his grant Canterbury Vale, as a tribute to Canterbury in England, and the suburb took its name from the farm. The farm extended over the area of modern day Canterbury and Ashbury suburbs. By 1800, when it was sold to Lieutenant William Cox, the property covered 600 acres. In 1803, when it covered 900 acres, it was sold to Robert Campbell the elder (1769-1846), who then bought up most of the land north to Liverpool Road.

The village of Canterbury was formed after 1841 subdivision of this land, then owned by Campbell. Sales of the land in the area west of Canterbury Road and north of the railway, were successful, and several other sales followed in the 1840s and 1850s.

Although the soil in this area was rather poor, there was some farm cultivation, but the main work was wood cutting and carting, and brickmaking. In 1840 the Australian Sugar Company bought 60 acres of Campbell's Canterbury estate and a steam engine was installed, but after passing through the hands of several owners, the factory closed in 1856.

The first post office opened in 1858, and the first official public school in 1878, and the district slowly developed. Canterbury Race Course, on the northern bank of the Cooks River has been one of Sydney's major racetracks since 1871. The railway station, on the Bankstown line, opened in 1895 (Pollen & Healy, 1988, 7-8 & 50).

In the first decades after European arrival in the Sydney region, the area of Marrickville was primarily known as a source of timber for boatbuilding. Thomas Moore was granted land in the district in 1799 that he named Douglas Farm. Moore's advertisements in the Sydney Gazette in 1803 indicate that he was actively cutting and selling timber on his grant and he warned those 'intent on cutting timber' that they would be prosecuted (Extent Heritage, 2018, 6).

Moore was followed by Dr Robert Wardell, a wealthy barrister, who purchased more than 2,000 acres (800 hectares), including the former estate of Thomas Moore, circa 1830. The area remained semirural, particularly in the low-lying areas to the south near the Cooks River, till the arrival of the suburban railway in the 1890s brought closer settlement and subdivision of the larger estates. Marrickville also saw the establishment of some significant industrial enterprises, with stone quarries, brick and tile works, woollen mills, steel and metal founders and fabricators and automotive and various service industries (ibid, 2018, 6).

South of the Cooks River, timber cutting was also a key local industry, until the land was sufficiently clear for it to be used for cattle grazing, allowing a small local dairy industry to develop. Today's Earlwood, originally known as Undercliffe, grew eastwards from Canterbury in the early twentieth century, when the arrival of the electric tram encouraged subdivision of land for residential housing (ibid, 2018, 6).

With the rise of industry north of the Cooks River, the area developed rapidly and the various road crossings over the River, notably at Undercliffe Street, Wardell Road and Canterbury Road, became as important as pedestrian routes as they were for vehicles. From the 1890s, there were calls for the construction of separate pedestrian walkways on these road bridges, as the numbers of pedestrians and vehicles using the bridges were too high for safety (ibid, 2018, 6).

The Cooks River itself was, from the 1830s, notably affected by the erection of the dam near the mouth of the river at Tempe. A second dam, built at Canterbury at the site of the Canterbury Sugar Factory in the 1850s, exacerbated the pollution problems and, by the 1880s, low flow, siltation and pollution from tanneries and wool-washing plants had led to a notable degradation of the local environment. From the 1890s, there were calls to remove the dams but it wasn't until the formation of the Cooks River Improvement League in 1925 that things began to change (ibid, 2018, 6).

In 1928, in response to the Cooks River Improvement League and in keeping with its program of stormwater channel construction, which was already significantly improving public health in Sydney, the NSW government allocated funding to remove the two dams and to dredge the Cooks River from its mouth as far as Burwood Road, Campsie. This work included the reclamation of the river banks behind stone and concrete walls and the creation of riverside reserves.
In the twentieth century, the Cooks River continued to be a problem for its water quality and degraded riparian environment (ibid, 2018, 6).

In 1946, the Cooks River Improvement Act was passed, giving control of the Cooks River from Tempe to Canterbury Road to the Department of Public Works. The river was dredged further, mangroves and swamps were reclaimed and the banks were strengthened with iron sheet piling. Despite these efforts, there was little improvement in the water quality, owing to industrial wastes and urban stormwater runoff. From 1975, the State Pollution Control Commission has classified the Cooks River to be a restricted waterway, meaning that it is unsuitable for domestic uses or for swimming but adequate to maintain aquatic life and associated wildlife (ibid, 2018, 6).

Cooks River Sewage Aqueduct
Completed in 1859, Sydney's first sewerage system consisted of five outfall sewers in the central city area that drained to Sydney Harbour. The outfalls were located at Blackwattle Bay, Darling Harbour, Sydney Cove, Bennelong Point and Woolloomooloo Bay. As a result, by the 1870s, the Harbour had become grossly polluted and, following continuing complaints, the Government created the Sydney City and Suburban Health Board to investigate an alternative means of disposing of the city's sewage. As Sydney grew in size (its population doubled in the two decades between 1871 and 1891), sanitation issues became increasingly important. By the 1880s, repeated outbreaks of typhoid, diphtheria, phthisis (tuberculosis) and gastroenteritis in Sydney spurred the construction of sewers and stormwater drains throughout the city, in an ultimately successful attempt to remove foul and contaminated water from the streets (ibid, 2018, 7).

Two gravitation sewers were constructed in the 1880s by the Public Works Department (PWD): a northern sewer discharging to the ocean at north Bondi and a southern sewer draining to a sewage farm at Rockdale. In 1888, the new Board of Water Supply and Sewerage was created and, in 1889, it took over the old harbour outfall sewers and the recent works completed by the PWD. (The Board of Water Supply and Sewerage became the Metropolitan Board of Water Supply and Sewerage in 1892, the Metropolitan Water, Sewerage and Drainage Board in 1924, the Water Board in 1987 and Sydney Water Corporation in 1994. It was colloquially referred to as 'the Water Board' throughout the 20th century)(ibid, 2018, 7).

The Southern Outfall Sewer, constructed between 1880 and 1889, ran in a southerly direction through Surry Hills, Waterloo and Redfern and reached the Rockdale sewage farm by means of an inverted syphon passing under the Cooks River. This sewerage farm was expanded when it was joined to the Western Main Sewer in 1898. Designed to serve the western suburbs of Sydney, the sewer line ran between the Rockdale/Arncliffe Sewage farm and an underground penstock chamber at Premier Street, Marrickville. This penstock chamber took the discharge from three main branch sewers, serving suburbs such as Strathfield, Burwood, Ashfield, Drummoyne, Leichhardt and Newtown (the Premier Street vent shaft was built in 1899-1900 to ventilate the penstock chamber). From the penstock chamber, the sewer ran across Wolli Creek and the Cooks River on aqueducts to the sewerage farm (ibid, 2018, 7).

The aqueduct was designed by the Engineer-in-Chief and government-appointed nominee to the Board of Water Supply and Sewerage, Robert Hickson, and construction was contracted to J. F. Carson. The aqueduct consists of two parts, a two-span metal lattice truss crossing the Cooks River and a series of seventeen brick arches crossing the floodplain on the southern side, with the three sewer carrier pipes carried on steel saddles (ibid, 2018, 7).

It is contemporary with and virtually identical to the sewerage aqueduct across Wolli Creek, approximately 450 metres south. The Cooks River Sewerage Aqueduct was one of six aqueducts built between 1895 and 1901 by the Sewerage Branch of the Public Works Department, the others being the reinforced concrete 'Monier' arches at Whites Creek and Johnstons Creek (1897), the mass concrete/brick arches and iron pipe at Wolli Creek (1895), the Mosman Bay steel arch (1901) and the stone/concrete and steel pipe at Lewisham (1900)(ibid, 2018, 7).

The sewage farm occupied 125 hectares (309 acres) when first established in 1890 and, with the addition of the Western Main Sewer in 1898, the area of the farm was more-than-doubled to 251 hectares (620 acres). The farm rapidly became saturated, however, and it was decided to extend these sewers to the coast to discharge into the ocean. Between 1908 and 1918, the Southern and Western Suburbs Ocean Outfall Sewer (SWSOOS) was constructed from the Rockdale/Arncliffe Sewage Farm to the coast at Long Bay and, when opened, the sewage farm was then closed. Much of the land was later incorporated into the Sydney Airport site (ibid, 2018, 7).

In the late 1930s, owing to increases in population throughout its service area and the construction of the North Georges River Submain serving the southern suburbs, the SWSOOS was duplicated from Kyeemagh (the site of the former Sewage farm) to Little Bay. North of the Harbour, a number of local systems were consolidated with the construction of the Northern Suburbs Ocean Outfall Sewer (NSOOS) between 1914 and the 1930s (ibid, 2018, 7-8

Cooks River Sewage Aqueduct:
The Cooks River sewage aqueduct was completed in 1895. The aqueduct was constructed as the Main Western Carrier , later part of the Southern and Western Suburbs Ocean Outfall Sewer System (SWSOOS). The aqueduct was designed and built by the Sewerage Branch of the Public Works Department (Contract No. 64), the design work being completed by 1893. The engineer-in-chief of this department at the time was Robert Hickson, who was also a Water Board member.

The Main Western Carrier was designed to serve the western suburbs of Sydney. The line extended from the Rockdale end of the Arncliffe sewerage farm (which was enlarged for the scheme) to the sewer penstock at Premier Street, Marrickville. The contract necessitated the construction of aqueducts over the Cooks River, Wolli Creek and at Arncliffe between Rocky Point Road (Princess Highway) and Illawarra Road (Arncliffe Street) and extensive tunnelling. The work was undertaken in two contracts relating to the different construction types. The contract for the aqueducts was let to J. F. Carson.

The original design of the aqueduct provided for a triplicate 6-ft. (1.8 m.) diameter wrought iron sewer carrier (although only two pipes were initially laid) supported on 560-ft. (171 m.) of segmental 17 brick arches of approximately 32-ft. (10m.) span, two 80-ft. (24 m.) by 25ft. (7.6 m.) steel lattice girder bridge spans, and 80-ft. (24 m.) of a series of mass concrete arches within embankment. The total length of the aqueduct is approximately 720-ft. (220m.).

The bridge spans are of mild steel riveted construction, the sewer carrier pipes being carried on cross beams on two simple lattice girders (on trusses), with a series of small cross lattice girders for wind bracing. The bridge spans are supported on two metal circular piers. The piers of the brick arches are constructed from mass concrete, faced in decorative brick and seated on mass concrete foundations founded on a raft of timber piles. The arches are a combination of brick and sandstone and mass concrete construction. The two original sewer carrier pipes were fabricated from wrought iron and riveted. Expansion joints of 6ft. sections were installed at the junction of the brick arches and the steel lattice bridge and above the ninth arch south of the bridge.

The third (western) sewer pipe of welded mild steel was laid in 1929. The original pipes have been maintained over the years to the present, with selective replacement of defective sections.

The Cooks River is one of six sewage aqueducts in Sydney completed in the period 1895-1901. Others include the reinforced concrete 'Monier' arches at Whites Creek and Johnstons Creek (1897), the mass concrete/brick arches and iron pipe at Wolli Creek (1895), the Mosman Bay steel arch (1901), and the stone/concrete and steel pipe at Lewisham (1900).

58 Thornley Street, Marrickville
Control of Lots 38-40 occupied by the dwelling were transferred to the MBWS & S in 1898 along with Lots 17 & 18 on nearby Premier Street.1 This land was acquired by the Board as part of ongoing works for the Western Suburbs Sewerage scheme (ibid, 2018, 9).

In 1899, the MBWS & S accepted tenders for the construction of a brick cottage at 58 Thornley Street, Marrickville. The two-bedroom residence was built at the northern end of the Cooks River Aqueduct on the same block of land that the aqueduct abutment occupied. The dwelling is a Federation cottage with simplistic design elements typical of late 19th Century Federation workers cottages common throughout Marrickville and Sydney's inner west, which housed workers from the booming local industry in the area (ibid, 2018, 9).

An excerpt from the Minutes of the MBWS & S Board meeting conducted on the 8 May 1899 states the cottage was built to house a maintenance man, at the recommendation of an engineer, with an estimated construction cost of (Pounds)400.2 Marrickville Council records further document that the house was occupied by a MBWS & S maintenance employee in 1904 and 1926. In 1935, the MWS & DB accepted E. Hammonds' tender for repairs and renovations to the Board's brick cottage at 58 Thornley Street and described the dwelling as a 'residence for sewerage maintenance-man...'. 3 (ibid, 2018, 9).

The role of the employee was to ensure the original pipes were internally maintained through successive coats of tar or bitumen. Treatments, such as the necessary patching of corroded barrels, were undertaken periodically until, in 1943, it became evident that the condition of the original barrels meant that they needed to be renewed or extensively repaired (ibid, 2018, 9).

In order to preserve the pipe's steel shell, the internal cavities were 'gunited'. The Gunite process consists of mixing cement and sand with water under pneumatic pressure to create a hard, dense mortar that possesses high strength and elastic properties. The mixture is then applied as a base coat, then steel reinforcement is added and a second coat applied. This process was isolated to one barrel at a time and took two years to complete.4 (ibid, 2018, 10).

The use of gunite was estimated to preserve the longevity of the aqueduct by at least 20 years. It was these technological developments of the 1940s that made redundant the need for continuous inspection and repair with regular applications of cement, tar and bitumen. With constant upkeep no longer required, the aqueduct also no longer required a permanent maintenance employee (ibid, 2018, 10).

56-58 Thornley Street continued to be occupied by Water Board employees for some time on a unspecific basis but, since the 1980s, the property has been leased to the public until recently (ibid, 2018, 10).

Historic themes

Australian theme (abbrev)New South Wales themeLocal theme
1. Environment-Tracing the evolution of a continent's special environments Environment - naturally evolved-Activities associated with the physical surroundings that support human life and influence or shape human cultures. Other open space-
1. Environment-Tracing the evolution of a continent's special environments Environment - naturally evolved-Activities associated with the physical surroundings that support human life and influence or shape human cultures. Changing the environment-
2. Peopling-Peopling the continent Aboriginal cultures and interactions with other cultures-Activities associated with maintaining, developing, experiencing and remembering Aboriginal cultural identities and practices, past and present. Aboriginal Culture-
2. Peopling-Peopling the continent Aboriginal cultures and interactions with other cultures-Activities associated with maintaining, developing, experiencing and remembering Aboriginal cultural identities and practices, past and present. Cadigal tribe - Eora nation-
3. Economy-Developing local, regional and national economies Environment - cultural landscape-Activities associated with the interactions between humans, human societies and the shaping of their physical surroundings Developing local, regional and national economies-National Theme 3
3. Economy-Developing local, regional and national economies Environment - cultural landscape-Activities associated with the interactions between humans, human societies and the shaping of their physical surroundings Landscapes of institutions - productive and ornamental-
3. Economy-Developing local, regional and national economies Technology-Activities and processes associated with the knowledge or use of mechanical arts and applied sciences Technologies for reticulated water supply-
3. Economy-Developing local, regional and national economies Technology-Activities and processes associated with the knowledge or use of mechanical arts and applied sciences Technologies for sanitation-
4. Settlement-Building settlements, towns and cities Towns, suburbs and villages-Activities associated with creating, planning and managing urban functions, landscapes and lifestyles in towns, suburbs and villages Developing suburbia-
4. Settlement-Building settlements, towns and cities Towns, suburbs and villages-Activities associated with creating, planning and managing urban functions, landscapes and lifestyles in towns, suburbs and villages 19th Century Infrastructure-
4. Settlement-Building settlements, towns and cities Utilities-Activities associated with the provision of services, especially on a communal basis Suburban Consolidation-
4. Settlement-Building settlements, towns and cities Utilities-Activities associated with the provision of services, especially on a communal basis Providing sewers and stormwater outlets-
5. Working-Working Labour-Activities associated with work practises and organised and unorganised labour Working on public infrastructure projects-
5. Working-Working Labour-Activities associated with work practises and organised and unorganised labour Working in the public service-
7. Governing-Governing Government and Administration-Activities associated with the governance of local areas, regions, the State and the nation, and the administration of public programs - includes both principled and corrupt activities. State government-
7. Governing-Governing Government and Administration-Activities associated with the governance of local areas, regions, the State and the nation, and the administration of public programs - includes both principled and corrupt activities. Developing roles for government - administration of land-
7. Governing-Governing Government and Administration-Activities associated with the governance of local areas, regions, the State and the nation, and the administration of public programs - includes both principled and corrupt activities. Developing roles for government - building and operating public infrastructure-
7. Governing-Governing Government and Administration-Activities associated with the governance of local areas, regions, the State and the nation, and the administration of public programs - includes both principled and corrupt activities. Developing roles for government - conserving cultural and natural heritage-
7. Governing-Governing Government and Administration-Activities associated with the governance of local areas, regions, the State and the nation, and the administration of public programs - includes both principled and corrupt activities. Developing roles for government - providing sewerage treatment-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Industrial buildings-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Monuments-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Applying architectural design to utlilitarian structures-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Landscaping - 20th century interwar-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Applying architectural design to industrial structures-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Technological innovation and design solutions-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Landscaping - Federation period-
8. Culture-Developing cultural institutions and ways of life Creative endeavour-Activities associated with the production and performance of literary, artistic, architectural and other imaginative, interpretive or inventive works; and/or associated with the production and expression of cultural phenomena; and/or environments that have inspired such creative activities. Building in response to natural landscape features.-
9. Phases of Life-Marking the phases of life Persons-Activities of, and associations with, identifiable individuals, families and communal groups Associations with the NSW Department of Public Works-

Assessment of significance

SHR Criteria a)
[Historical significance]
The Cooks River sewage aqueduct, completed in 1895, is an integral and highly visible component of the Main Western Carrier which subsequently evolved into the Southern and Western Suburbs Ocean Outfall Sewer System. This sewer was one of the Board's earliest major sewer schemes, and was designed under engineer-in-chief Robert Hickson, a foundation board member of Sydney Water .
SHR Criteria c)
[Aesthetic significance]
The arches of the aqueduct are excellent examples of decorative face brick (in a basically utilitarian structure), which are unlikley to be built again . The aqueduct is now attractively sited within a public reserve adjacent the Cooks River.
SHR Criteria d)
[Social significance]
The aqueduct is a major element of the historic built environment of the local government areas of Canterbury and Marrickville and provides a focus for an understanding to the contemporary community of the historical development of the local area. It is listed by groups such as the National Truct of Australia (NSW).
SHR Criteria e)
[Research potential]
The aqueduct is an excellent example of a late-nineteenth steel truss bridge (in non-railway construction). The wrought pipes are likely to be a rare examples of a large diameter, long run of wrought iron pipe fabricated in 1895. The welded steel pipe of 1929 may also be of significance in consideration of the application of this technology at this early date on a pipe of this length. The face brickwork is a textbook example of the trade in a basically utilitarian structure.
SHR Criteria f)
[Rarity]
Rare in consideration of its scale, siting and mixed use of materials and construction techniques.
SHR Criteria g)
[Representativeness]
Representative in its function which is widespread across Sydney.
Assessment criteria: Items are assessed against the PDF State Heritage Register (SHR) Criteria to determine the level of significance. Refer to the Listings below for the level of statutory protection.

Recommended management:

Recommendations

Management CategoryDescriptionDate Updated
Recommended ManagementProduce a Conservation Management Plan (CMP) 
Recommended ManagementPrepare a maintenance schedule or guidelines 
Recommended ManagementCarry out interpretation, promotion and/or education 

Procedures /Exemptions

Section of actDescriptionTitleCommentsAction date
CMP-EndorseConservation Plan submitted for endorsementCooks River Sewage Aqueduct, by Sydney Water for Sydney Water, July 2005 CMP endorsed by Heritage Council 29 July 2005 for a period of five years, expires 29 July 2010. Jul 29 2005
CMP-CommentConservation Plan submitted for comment58 Thornley Street Cottage CMP - referred for comment. Feb 26 2019
57(2)Exemption to allow workStandard Exemptions HERITAGE ACT 1977

ORDER UNDER SECTION 57(2) TO GRANT STANDARD EXEMPTIONS FROM APPROVAL

I, Penny Sharpe, the Minister for Heritage, on the recommendation of the Heritage Council of New South Wales and under section 57(2) of the Heritage Act 1977:

revoke the order made on 2 June 2022 and published in the Government Gazette Number 262 of 17 June 2022; and

grant an exemption from section 57(1) of the Act in respect of the engaging in or carrying out the class of activities described in clause 2 Schedule A in such circumstances specified by the relevant standards in clause 2 Schedule A and General Conditions in clause 3 Schedule A.

This Order takes effect on the date it is published in the NSW Government Gazette.

Dated this 29th day of October 2025
The Hon Penny Sharpe MLC
Minister for Heritage

For more information on standard exemptions click on the link below.
Nov 7 2025

PDF Standard exemptions for engaging in or carrying out activities / works otherwise prohibited by section 57(1) of the Heritage Act 1977

Listings

Heritage ListingListing TitleListing NumberGazette DateGazette NumberGazette Page
Heritage Act - State Heritage Register 0132218 Nov 99   
Heritage Act - s.170 NSW State agency heritage register 215134   
National Trust of Australia register      
Register of the National Estate     

Study details

TitleYearNumberAuthorInspected byGuidelines used
Sydney Water Heritage Study1996215134Graham Brooks and Associates Pty LtdGRAHAM BROOKS AND ASSOCIATES PTY LTD 1 July 1996 Yes
Canterbury Heritage Study Review2006 City Plan Heritage  Yes

References, internet links & images

TypeAuthorYearTitleInternet Links
WrittenExtent Heritage2018Cook's River Cottage, 58 Thornley Street, Marrickville - Conservation Management Plan - Final
WrittenSydney Water2005Cooks River Sewage Aqueduct - Conservation Management Plan

Note: internet links may be to web pages, documents or images.

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Data source

The information for this entry comes from the following source:
Name: Heritage NSW
Database number: 5051423
File number: H04/00049


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