Prospect South to Macarthur (ProMac)

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Under the ProMac project we are building new drinking water pipelines and infrastructure between Prospect South and Macarthur as part of Sydney Water's long-term plan to extend the city’s water capacity and supply.

ProMac will upgrade our existing water reservoirs at Liverpool, Cecil Park and Currans Hill as well as build two new reservoirs at Oran Park. This will allow for an extra 100 Megalitres of additional reservoir capacity in Western Sydney. That’s the equivalent of about 50 Olympic-sized swimming pools!

We’re also building 15 km of additional pipework, three pumping stations and upgrading our existing network to ensure growing communities in South Western Sydney have access to clean drinking water.

Sydney Water is investing in new infrastructure that will support the growing, dynamic South Western Sydney.

ProMac will help Sydney Water deliver on its vision of creating a better life with world-class water services.

Under the ProMac project we are building new drinking water pipelines and infrastructure between Prospect South and Macarthur as part of Sydney Water's long-term plan to extend the city’s water capacity and supply.

ProMac will upgrade our existing water reservoirs at Liverpool, Cecil Park and Currans Hill as well as build two new reservoirs at Oran Park. This will allow for an extra 100 Megalitres of additional reservoir capacity in Western Sydney. That’s the equivalent of about 50 Olympic-sized swimming pools!

We’re also building 15 km of additional pipework, three pumping stations and upgrading our existing network to ensure growing communities in South Western Sydney have access to clean drinking water.

Sydney Water is investing in new infrastructure that will support the growing, dynamic South Western Sydney.

ProMac will help Sydney Water deliver on its vision of creating a better life with world-class water services.

  • Cecil Hills - night work barrier removal and foot path restoration along Cowpasture Road

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    We have been working at night on Cowpasture Road to install a water main within the median strip. We have now connected the new water main to the existing network and have begun restoration of the area. To reduce traffic impact along Cowpasture Road, barrier removal and concreting of a small section of footpath will occur at night across two shifts between Tuesday 13 December and Friday 23 December. Work will occur between 8.30 pm and 5 am, Sunday to Friday. Refer to map below for location of work.

    There will be no interruptions to your water service during this work. Traffic Control will be in place to assist pedestrians around the work zone.

    Thank you for your support and cooperation during this essential work.

    Location of work

  • Currans Hill Reservoir inspiring young Picassos and the next generation of construction workers

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    Last week representatives from the Prospect South to Macarthur (ProMac) Program visited Manooka Valley Preschool in Currans Hill for an arts and crafts morning ahead of the start of Stage 2 of the Currans Hill Reservoir Project.

    Sydney Water Delivery Partner, ACCIONA, and Principal Contractor for the Currans Hill Reservoir build, Brockman Engineering, joined 20 pre-schoolers in decorating hard hats using coloured markers. The pre-schoolers gifted their Picasso masterpieces to the Brockman Team ahead of them mobilising onsite to build a new reservoir for the community.

    The morning began with a short talk from the Delivery Partner, followed by a video showing the original reservoir being demolished. The team talked about the importance of safety equipment and where drinking water comes from. Responses from the kids included “safety!”, “helmet!”, “hat!”, “the ocean!” “drink bottles!” and “pipes!”. When asked what they wanted to be when they grew up, responses included Spiderman, doctor and guitar teacher. The highlight for the ProMac team was hearing one of the pre-schoolers saying that he would “never forget this!”.

    40 hi-vis vests were donated for the children to take home as a show and tell gift for their families. By the end of the activities, the children looked as though they were ready to step onto a real construction site! Several other engagement activities are planned with the daycare once construction starts.

    The new reservoir will stand 20.4 metres high and will hold 6 million litres of water, equivalent to 83 standard home swimming pools, or 109, 000 seven-minute showers. The new reservoir is expected to be operational by late 2023.

    Demolition video: Videos | Prospect South to Macarthur (ProMac) | Sydney Water Talk


  • Milstone Alert: 18km of pipeline construction complete

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    supporting image

    Sydney Water has completed 18 kilometres pipeline in five sections between Prospect South and Macarthur as part of its investment in new infrastructure that will support growth areas in Western and South Western Sydney.

    The supply area for this pipeline includes Liverpool LGA, the South West Growth Area and the Western Sydney Aerotropolis including the suburbs Cecil Hills, Cecil Park and Kemps Creek.

    The last connection was made at a ceremonial valve turn in the Australian Botanic Gardens at Mt Annan on Tuesday 6th September.

    The 18km pipeline installation has been made possible in collaboration with Delivery Partner ACCIONA and principal contractors Killard Infrastructure, Diona, Athassel Civil,Ferrycarrig Construction, Vaughn Civil and Comdain Infrastructure.

  • Cecil Hills - work hours update within Liverpool Reservoir site and Cowpasture Road

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    Extended Saturday hours

    Due to long periods of wet weather, we will need to continue working extended hours on Saturdays within the Liverpool Reservoir site to meet critical operational deadlines. Extended Saturday hours will be from 8 am to 5 pm, and this will continue until project completion in March 2023.

    Night work on Cowpasture Road

    We have been working at night on Cowpasture Road to install a water main within the median strip. We are now ready to connect the new water main to the existing network. Night work will continue until Monday 31 October, from 8.30 pm and 5 am. We will work Sunday to Friday with an additional respite night provided on a Wednesday.

    There will be no interruptions to your water service during this work.

    Once all work is complete, we will restore the impacted area and remove all materials within the median of Cowpasture Road.


    Location of work

  • Mount Annan - works recommencing at Narellan South Reservoir site

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    We had originally planned to start work building the re-chlorination plant in April, however, due to wet weather and other unforeseen delays, work will now commence Tuesday 4 October 2022 and will take around 10 months to complete, weather permitting.

    The work involves:

    • investigating and surveying the area
    • setting up site facilities
    • clearing trees and removing vegetation within 20 metres of our work area
    • using plant and equipment to level the site and remove spoil
    • constructing a larger access road and an unloading bay for trucks
    • delivery and cranage of any oversized pre-constructed building
    • restoring the impacted area.

    Construction traffic and impacts

    There will be an increase in construction traffic around Mount Annan during our work. Residents can expect to see truck movements on Mount Annan Drive, Indigofera Circuit, Commelina Drive, Swansona Avenue and Moyengully Avenue.

    Our work hours

    • Monday to Friday 7 am to 6 pm
    • Saturdays 8 am to 1 pm.

    No work is planned on Sundays or public holidays. If we need to work outside our standard hours from time to time, we will update residents before this occurs.

    Location of work

  • Bossley Park - Quarry Road works

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    We will be connecting cabling and installing an electrical cabinet on the concrete foundation in the nature strip in front of 2 Quarry Road, Bossley Park.

    Work will begin on Monday 5 September 2022 and should take up to one week to complete, weather permitting.

    This work will involve:

    • trenching in the nature strip outside number 2, 4 and 6 Quarry Road
    • installing instruments in the laneway at the rear of 65 Mimosa Road shops
    • installing the electrical cabinet and connecting the cables
    • restoring impacted areas.

    We may need to return to the laneway behind 65 Mimosa Road to carry out activities over 1-2 days during this week.

    Traffic changes

    During this work, there will be changed pedestrian and traffic conditions. Traffic controllers will be in place to safely manage vehicle and pedestrian movements around the work area to keep you safe.

    Our work hours

    • 7 am to 6 pm Monday to Friday
    • 8 am to 1 pm Saturday.
  • Harrington Park - extended Saturday hours Saturday 27 August

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    On Saturday 27 August 2022, we will be working inside the Harrington Park Pump Station site to prepare an area for installation of Endeavour Energy equipment. We will be working extended hours from 8am to 6pm to complete this work.

    Our work will involve:

    • the arrival of trucks to site
    • the use of machinery such as an excavator, crane and vacuum truck
    • concrete works, including the delivery of concrete.

    Endeavour Energy has notified residents who will be affected by a power outage.


    Location of work

  • Bossley Park - road investigation works, corner of Rickard Road and Mimosa Road

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    We previously notified you that we would be working on Rickard Road, Bossley Park at night from Monday 15 August 2022 to locate services that have been covered by recent roadwork. These investigation works are necessary to support the upgrade underway at Prospect Reservoir.

    To reduce the impact to nearby residents, these works have been re-scheduled to daytime. We will now complete these works between 9.30 am and 3 pm starting on Tuesday 16 August 2022, weather permitting. Refer to map overleaf.

    Traffic changes

    As we complete this work, there will be speed reductions in place along Rickard Road and Mimosa Road. All traffic will be managed on a stop-slow arrangement. Traffic controllers will safely assist pedestrians around our work zone. Driveway access will be maintained however, residents may experience minor delays while machinery moves out of the way. Motorists, cyclists and pedestrians are advised to observe all project signage and traffic control directions during construction.

    Location of work

  • Cecil Hills - tree planting community day with Cecil Hills Early Education and Care Centre

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    Principal Contractor Diona Pty Ltd, installed 1.95 km of trunk main through Cecil Hills in 2021-2022 for our Prospect to Macarthur program (ProMac).

    One of the businesses directly impacted by these works was the Cecil Hills Early Education and Care Centre. Following extensive consultation with centre staff, Diona was able to schedule the works to occur outside of their business hours and adjust the pipe alignment to avoid a boom gate and reduce tree loss.

    At the end of June, Sydney Water Delivery Partner ACCIONA Australia and Diona returned to the centre to donate three trees. The trees were presented to centre staff and representatives from Liverpool City Council NSW parks and facilities teams.

    We then had some very keen mini helpers pull on some gloves and help plant the trees. The spotted gums will provide the centre’s backyard with some much-needed shade in the summer months.

    Representatives from Diona Pty Ltd, ACCIONA Australia and Liverpool City Council

  • Cecil Hills - continuing night work on Cowpasture Road

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    We have been working at night on Cowpasture Road to install a water main within the median strip. Due to preparation work required for the connection, we still need to continue work at night from Monday 18 July. Work will take place over five night shifts a week between 8.30pm to 5am, Sunday to Friday, with two nights respite during the week. We anticipate completing this work by 30 September 2022, weather permitting.

    The following activities will be undertaken:

    • excavation of the median
    • construction of concrete reinforcement to support the water main
    • welding
    • connecting the water main to the network in two locations
    • restoration of the Cowpasture Road median.

    In the week leading up to each connection, we will work six night shifts, 8.30pm to 5am Sunday to Friday.

    What you need to know

    There will be no interruptions to your water service during this work.

    We’ll do everything we can to keep noise to a minimum including where possible loading materials during the day shift, using noise blankets to enclose our work area and completing the noisiest activities at the beginning of a shift.


    The health and wellbeing of Sydney Water crews are our top priority. All crews are adhering to testing, social distancing, and mask wearing requirements.

    We know our work can be disruptive, so we’ll make every effort to reduce any impact this work may have on you. Thank you for your cooperation during this essential work.

Page last updated: 28 Jun 2024, 01:40 PM