## Collection, treatment & asset maintenance: backed by decades of local service delivery Veolia's St Marys Liquid Treatment Plant in Western Sydney brings together **global environmental expertise and decades of trusted local service** to deliver fully integrated, compliant liquid waste and drainage solutions. Veolia's proven track record across Australia means your operations are backed by a partner with the depth of experience and local knowledge to keep your business protected, compliant, and running smoothly. [ ![Drain cleaning & non-destructive digging capability statement small thumbnail](/sites/g/files/dvc2011/files/styles/content_push_teaser/public/image/2026/06/St%20Marys%20Drain%20Cleaning%20%26%20Non-Destructive%20Digging%20capability%20statement%20small%20thumbnail.png.webp?itok=-jMyFjCj) ](https://www.anz.veolia.com/sites/g/files/dvc2011/files/document/2026/06/Veolia_St%20Marys%20Liquid%20Treatment%20Plant_Drain%20Cleaning%20and%20Non-Destructive%20Digging_Capability%20Statement.pdf "Drain cleaning & non-destructive digging") [Drain cleaning & non-destructive digging](https://www.anz.veolia.com/sites/g/files/dvc2011/files/document/2026/06/Veolia_St%20Marys%20Liquid%20Treatment%20Plant_Drain%20Cleaning%20and%20Non-Destructive%20Digging_Capability%20Statement.pdf "Drain cleaning & non-destructive digging") Our St Marys team provides end-to-end drain services to keep your operations running and compliant. Download the capability statement to view our full scope of drain services. [Read more](https://www.anz.veolia.com/sites/g/files/dvc2011/files/document/2026/06/Veolia_St%20Marys%20Liquid%20Treatment%20Plant_Drain%20Cleaning%20and%20Non-Destructive%20Digging_Capability%20Statement.pdf "Drain cleaning & non-destructive digging") ### Liquid waste management & treatment The St Marys team delivers comprehensive collection, transport, and treatment solutions tailored to a wide range of clients and waste types. ![Sanitation tank truck icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Sanitation%20tank%20truck%20icon%20-%20dark%20green%20%281%29.png.webp?itok=1rE5TcIi) Collection & transportation ### Collection & transportation ![Water treatment tanks icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Water%20treatment%20tanks%20icon%20-%20dark%20green%20%281%29.png.webp?itok=u4oNi1Ge) Water treatment ### Water treatment ![Sludge treatment tanks icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Sludge%20treatment%20tanks%20icon%20-%20dark%20green%20%281%29.png.webp?itok=th_4VhE4) Oily water & sludge solutions ### Oily water & sludge solutions ![Emergency icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Emergency%20icon%20-%20dark%20green%20%281%29.png.webp?itok=99XTMxyg) 24 hour emergency response ### 24 hour emergency response #### Liquid waste collection, transportation & treatment Veolia's St Marys facility delivers end-to-end collection, transportation, and treatment solutions for liquid waste and contaminated water, including industrial effluent, oily water and sludge, and sullage (grey water). Accepted EPA-classified waste types include J100, J120, and N140. Our fleet of over 15 specialised vehicles from tankers to heavy vacuum trucks boast broad capabilities, enabling quick and compliant operations even on sites which require restricted or underground access. Back at the facility your liquid waste undergoes advanced separation, clarification, and filtration processes to achieve output quality that adheres to NSW's high regulatory environmental standards. #### Domestic septic solutions We provide reliable maintenance and pump-out services for domestic onsite wastewater treatment systems such as septic tanks. #### 24-hour emergency response Our team is equipped to respond to liquid waste emergencies with around-the-clock support. ### Specialised industrial cleaning ![Wastewater network icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Wastewater%20network%20icon%20-%20dark%20green%20%281%29.png.webp?itok=M2pXXQhy) Stormwater & open drain cleaning ### Stormwater & open drain cleaning ![Water pipe icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Water%20pipe%20icon%20-%20dark%20green%20%281%29.png.webp?itok=r8IJ59_6) Sewer cleaning ### Sewer cleaning ![Urban cleaning truck icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Urban%20cleaning%20truck%20icon%20-%20dark%20green%20%281%29.png.webp?itok=vLtQzwSY) Industrial cleaning & high-pressure water flushing ### Industrial cleaning & high-pressure water flushing ![Maintenance safety hat icon](/sites/g/files/dvc2011/files/styles/media/public/image/2026/06/Maintenance%20safety%20hat%20icon%20-%20dark%20green%20%281%29.png.webp?itok=y_222Npa) Confined space works ### Confined space works #### Drain cleaning & preventative maintenance The St Marys team delivers heavy-duty cleaning and maintenance for drain and pipe networks. - Stormwater and open drain cleaning - Sewer cleaning - Industrial cleaning and high-pressure water flushing - Confined space works [ CONTACT DETAILS ](#panel_138221) [ ![Phone](/sites/g/files/dvc2011/files/styles/default/public/image/2024/06/Facilities%20Icons%20%2815%29.jpg.webp?itok=gWrpcmlU) ]()**PHONE** [**(02) 9623 1177**]() [ ![Address](/sites/g/files/dvc2011/files/styles/default/public/image/2024/06/Facilities%20Icons%20%2817%29.jpg.webp?itok=A1OUWNOX) ](https://maps.app.goo.gl/Xqup26EP1EQzZx89A)**ADDRESS** [**4-7 / 15 Lee Holm Road, St Marys NSW 2790**](https://maps.app.goo.gl/Xqup26EP1EQzZx89A) ![Opening Hours](/sites/g/files/dvc2011/files/styles/default/public/image/2024/06/Facilities%20Icons%20%2816%29.jpg.webp?itok=jJAoAItA) **OPENING HOURS** **Mon to Fri:** 5:00am - 6:30pm **Sat:** 5:00am - 2:00pm **Sun & out of hours:** As scheduled Site not open to general public. You must have JavaScript enabled to use this form. ## Your Enquiry First Name Last Name Email Phone Please note St Marys Liquid Treatment Plant only services areas within the state of New South Wales. Post Code Are You an Existing Customer? - Select -YesNo Company Account Number Query Type? - Select -Sales & ServicesGeneral Enquiries Message I would like to receive marketing communications regarding Veolia products, services, & events By completing this form, you give your consent to the collection and use of the personal data that concern you. [Read all the disclaimer.](https://www.veolia.com/en/form-disclaimer) ## How can we help? ### Environmental management plans [PDF Veolia St Marys Liquid Treatment Plant Pollution Incident Response Management Plan (PIRMP) (19.98 MB) ](/sites/g/files/dvc2011/files/document/2026/06/Veolia%20St%20Marys%20Liquid%20Treatment%20Plant%20Pollution%20Incident%20Response%20Management%20Plan%20PIRMP%202025.pdf)