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/Bonnyrigg Heights - Cowspasture Road night work from Sunday 6 March 2022

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    As you are aware, we are building a new water pumping station and new water pipelines within Sydney Water’s Liverpool Reservoir facility in Cecil Hills to provide drinking water services for 84,000 new homes in the South West Growth Area, Western Sydney Aerotropolis Growth Area, Liverpool CBD and Menangle Park.

    As part of this work, we need to connect new pipes to the existing network by tunnelling under Cowpasture Road. We plan to start work on Sunday, 6 March 2022, and expect to finish by the end of June 2022, weather permitting.

    Our work hours

    Due to busy traffic conditions during the day, we will need to do this work at night between 9.30 pm and 5 am, Sunday, Monday, Wednesday and Thursday night only. We know this is not ideal, but 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.

    We will also continue working extended Saturday hours, 8 am to 5 pm, with low noise impact works to be scheduled while night works are in progress. We ask that you bear with us while we get this work completed as quickly as possible.

    This work will involve

    • establishing a work area within the median strip on Cowpasture Road using barriers, fencing and noise blankets (see attached map for location)
    • closing one southbound lane of Cowpasture Road and reducing the speed limit
    • digging an exit shaft for the Cowpasture Road micro-tunnel using an excavator
    • installing pipework, valves and valve pits
    • use angle grinders and welding to build steel reinforced cages
    • pouring concrete
    • backfilling and compaction using an excavator and whacker plate
    • testing and chlorination of the new pipework
    • exposing the existing water main using a vacuum truck and connecting to the new main
    • loading of materials from the Liverpool Reservoir site and transporting spoil back and tipping
    • restoring affected areas.

    Location of work

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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Kemps Creek - Elizabeth Drive speed reductions for removal of temporary access track

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    We will be working in the shoulder and verge of Elizabeth Drive, Kemps Creek approximately 300 metres west of Kemps Creek Bowling Club to remove a temporary driveway.

    The work will involve:

    • changes in local traffic
    • use of specialist plant to excavate and remove material from the verge
    • restoring the impacted area.

    The work will take place for 1 day between 28 February and 5 March 2022, weather permitting.

    Traffic changes

    During the works there will be changes to traffic conditions on Elizabeth Drive. A speed reduction will be in place to protect workers along the verge of Elizabeth Drive.

    Motorists, cyclists and pedestrians are advised to observe all project signage and traffic control directions during construction. Please see map for the location of work.

    Our work hours

    • 10 am to 2.30 pm Monday to Friday


    Location of work

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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Cecil Hills - Liverpool Reservoir achieves operational completion

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    On 2 February 2022, Sydney Water’s contractor Saunders has achieved operational completion on the new 60ML reservoir at the Liverpool Reservoir facility in Cecil Hills.


    The reservoir is part of the Prospect to Macarthur (ProMac) project which is securing drinking water for the expanding communities in the South West Growth Area and Western Sydney Aerotropolis Growth Area. At Liverpool Reservoir, work is continuing to build a new drinking water pipeline, pumping station and re-chlorination plant.


    The reservoir will be temporarily used as back-up storage to the existing tank until it is connected to the new ProMac water main in March. The new tank doubles the water storage capacity at the Liverpool Reservoir facility.


    To ensure the tank was leak free before commencing service, Saunders undertook a final fill to 100% capacity throughout late January. This involved filling the tank in 20% increments over a three week period. At each increment, water was held for 24-hours and monitored.


    The tank stands 13 metres high and is 80 metres in diameter, and can hold more than 24 Olympic-sized swimming pools worth of drinking water. 530 tonnes of steel were used in its construction and 15,000 litres of paint were applied to the interior and exterior.

    The new reservoir will feed the main pipeline which travels up to the Cecil Park Reservoir. It will additionally feed pipelines within the wider ProMac network. The ProMac project is anticipated for completion in late 2023.


    The new tank doubles the water storage capacity at the Liverpool Reservoir facility


    Internal view of the reservoir, which is 13 metres high and is 80 metres in diameter


    The roof is approximately 5000m² of surface area


    15,000 litres of paint were applied to the interior and exterior


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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Bossley Park - postponed Prairie Vale Road final connection night works to resume Thursday 10 February 2022

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    We have recently completed installation of the valve on Prairie Vale Road between Crow Place and Apache Road. We previously advised you that the final connection for this valve would occur on Friday 21 January 2022. Due to postponements out of our control, this work did not go ahead as planned. We are now ready to complete the final connection.

    We will complete the final connection at night on Thursday 10 February 2022 between 8 pm and 6 am, weather permitting.

    Water outage

    While the connection is completed, some residents will experience water outages for up to eight hours on Thursday 10 February only between 9 pm and 4 am. Sydney Water will notify all affected residents in a separate letter.

    Traffic changes

    As we complete this work, there will be a temporary closure of the eastbound lane along Prairie Vale Road between Crow Place and Apache Road. All traffic will share the use of the westbound lane on a stop-slow arrangement. The footpath will be closed to pedestrians and traffic controllers will ask pedestrians to stop and wait before crossing the road.

    Motorists, cyclists and pedestrians are advised to observe all project signage and traffic control directions during construction.

    Construction activities

    • exposing the existing water main
    • connecting the new valve to the existing main with bolting and welding.
    • truck and equipment movements with reversing beepers working in the area

    We’ll try to do the noisiest work early in the night, but there will be some noise after midnight at times when we backfill and restore the area. We will return on Monday 14 February to complete a final restoration of the disturbed area.

    Location of work

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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Currans Hill - site activity to begin at Currans Hill Reservoir, Tuesday 8 February 2022

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    As part of the Prospect to Macarthur (ProMac) project we are building a new drinking water pipeline between the Narellan South Reservoir in Mount Annan and the Sugarloaf Pump Station in Menangle Park, to provide drinking water services for 84,000 new homes in the South West Growth Area and Western Sydney Aerotropolis Growth Area.

    We are also replacing the reservoir in Currans Hill so that it can reliably supply water to the community for decades to come (please see map). We plan to start establishing site facilities to support the dismantling of the existing reservoir from Tuesday 8 February 2022, with construction of the new reservoir to commence April 2022, weather permitting.

    This work will involve:

    • establishing a site office
    • using elevated work platforms to dismantle the tank in sections
    • lifting sections of panels with the use of a crane
    • transporting components that can’t be re-used or recycled offsite by truck.

    All workers will park within the Sydney Water site.

    Construction traffic and impacts

    There will be an increase in construction traffic around Currans Hill during our work. Residents can expect to see truck movements on Turner Road, Ascot Drive and Manooka Road.

    Our work hours

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


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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Bradbury – construction of new re-chlorination plant to begin at Campbelltown South Reservoir

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    As part of the Prospect to Macarthur Project, we are building new drinking water pipelines to provide drinking water services for 84,000 new homes in the South West Growth Area and Western Sydney Aerotropolis Growth Area. Within our Campbelltown South Reservoir site at Bradbury, we will be building a new re-chlorination plant to improve the management of water quality for our customers (please see map).

    We plan to start establishing site facilities, investigating and surveying the area from Monday 21 February 2022, with construction planned to finish in August 2022, weather permitting.

    This work will involve:

    • 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
    • construction of a larger access road and an unloading bay for trucks
    • delivery and cranage of an oversize pre-constructed building
    • restoring the impacted area.

    Construction traffic and impacts

    There will be an increase in construction traffic around Bradbury during our work. Residents can expect to see truck movements on Karrabul Road, St Johns Road, Akuna Avenue, Greengate Road and Merino Crescent.

    Our work hours

    • 7 am to 6 pm Monday to Friday
    • 8 am to 1 pm Saturday

    We may need to work outside these standard hours from time to time and we will update residents before this occurs.


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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Narellan – construction of new re-chlorination plant to begin at Narellan South Reservoir

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    As part of the Prospect to Macarthur (ProMac) project we are building a new drinking water pipeline to connect the Narellan South Reservoir in Mount Annan and the Sugarloaf Pump Station in Menangle Park and a new re-chlorination plant next to the Narellan South Reservoir (please see map).

    We plan to start establishing site facilities, investigating and surveying the area for the new re-chlorination plant from Monday 21 February 2022, with construction planned to finish in August 2022, weather permitting.

    This work will involve:

    • 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
    • construction of a larger access road and an unloading bay for trucks
    • delivery and cranage of an oversize pre-constructed building
    • restoring the impacted area including re-vegetation to provide screening.

    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

    • 7 am to 6 pm Monday to Friday
    • 8 am to 1 pm Saturday

    We may need to work outside these standard hours from time to time and we will update residents before this occurs.


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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Kemps Creek - Western Road power pole installation

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    In Kemps Creek, we are installing 4.5 km of new water main to ensure our existing and future customers continue to have reliable access to clean drinking water.

    Upcoming work

    We will return to Western Road to install a new power pole which will eventually provide power to the recently installed pressure reduction valve. The work will take place on Tuesday 18 January 2022, weather permitting. There will be no interruption to your power supply during this work.

    This work will involve

    • changes in local traffic
    • using a pole borer to dig a hole in the road verge
    • using a crane to lift the pole into place
    • restoring the impacted area.

    Traffic changes

    During the works there will be changes to traffic conditions on Western Road. A lane closure and traffic control will be in place to safely assist motorists around our work area. Please see map for the location of work.

    Our work hours

    • 7 am to 6 pm Monday to Friday
    • 8 am to 1 pm Saturday

    Location of work - Western Road closure


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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Cecil Hills - Liverpool Reservoir commissioning works update

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    Sydney Water is working to expand our network to meet increased demands from growth in South West Sydney. To do this, we are building a new water reservoir within the Liverpool Reservoir site in Cecil Hills.

    Upcoming work

    We previously advised that commissioning works for the new water reservoir would occur prior to Christmas. This work will now take place from Monday 17 January 2022. This will involve filling the tank with 60 ML of water and will take approximately 3 weeks to complete. Filling of the tank will occur 24 hours a day and will be closely monitored during this time by workers conducting surveys.

    From Monday 17 January until Saturday 5 February 2022, workers will be monitoring the new reservoir 24 hours a day.

    What you need to know

    This work is not expected to be noisy however you may notice workers within the

    Liverpool Reservoir site, monitoring the tank and conducting surveys. Workers will monitor around the tank from the ground as well as from the roof of the tank. Flashlights will be used at night and will be directed away from properties. This work will not affect your water services.

    Location of work

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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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.

  • Bossley Park - valve installation works at rear of Mimosa Road shops

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    We are upgrading the existing water pumping station inside Prospect Reservoir to provide drinking water services for 84,000 new homes in the South West Growth Area and Western Sydney Aerotropolis Growth Area.

    As part of these works, we will be installing a valve in the laneway at the rear of the Mimosa Road Shops, Bossley Park to control the pressure of the water as it enters homes. There will also be a small electrical cabinet and pits installed on the council verge outside 2 Quarry Road, Bossley Park.

    As you may be aware, we postponed these works in 2021 to commence in the New Year. We are now ready to start these works on Monday 17 January 2022, and expect to finish by early March 2022, weather permitting.

    There will be an interruption to water supply during the final stages of work. Residents will be notified before this occurs.

    Traffic changes

    There will be changed pedestrian and traffic conditions as we work in the laneway behind the Mimosa Road Shops. Access to the laneway from Quarry Road will be temporarily closed for the duration of the work and staff parking at the rear of the shops will also remain closed during the works.

    A section of footpath along Quarry Road will also be temporarily closed for the duration of the work.

    The bus stop (ID 2176144) at 2 Quarry Road will be temporarily relocated approximately 30 metres to the west. Traffic controllers will manage vehicle and pedestrian movement around the work area to keep you safe.

    Motorists, cyclists and pedestrians are advised to observe all project signage and traffic control directions during construction. Please see map for the location of work.

    Location of work

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

    Members of the public can rest easy knowing that Sydney Water's front line crews are authorised to work safely to continue delivering these essential services for their communities.

    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: 17 May 2022, 11:33 AM