Works in your area starting 2026

You might not notice a lot of the work we do because most of it is beneath your feet. Every day, we’re maintaining and upgrading the pipes and pumps that keep water and wastewater flowing.

With upcoming works at our Longwarry Water Recycling Plant (WRP) you might see us or our delivery partner around.

Here's what to expect while we get the job done.

What we're doing

The Longwarry Water Recycling Plant (WRP) is requiring an upgrade to cater for future growth in the area. We’re delivering new and upgraded assets to make the WRP more resilient and adaptable to a changing climate, helping to manage catchment growth and provide capacity for additional flows from extreme wet weather events.

The upgrade will likely include:

• Preliminary treatment, including new inlet works, sewage screening to remove foreign objects and pollutants.

• Secondary treatment, including installation of bioreactors and blowers to assist the biological process and increase treatment capcacity.

• Tertiary treatment, such as Ultra Violet or Ultra Filtration processes, to treat wastewater prior to environmental discharge.

You shouldn’t notice any change to your water or sewerage services while we work.

When it's happening

We’re planning to start work in early 2027 until mid 2029. It should take around 2 years to complete (depending on the weather).

You can expect us to work Monday to Friday between 7 am and 6 pm and on Saturday between 7 am and 1 pm. On the odd occasion, we may need to work at other times for safety, technical or permit reasons.

Early works to prepare the plant for the upgrade is anticipated to commence in 2026. More information will be available once the scope and timeframe is confirmed.

What might impact you

During construction, we anticipate you may notice:

•Increased truck movements in the area and on Cathcart Road.

•Traffic management to manage construction impacts and ensure local traffic access is maintained.

•Periods of noise when heavy machinery is being used, including reversing beepers, continuous running engine/motor sounds and a temporary generator.

Want to know more? Watch our video 'What you might hear and see' below.

Don't miss these details

The Longwarry WRP upgrade is in the early planning phase, which will include applying for a Development License from the EPA in early 2026. More information will follow regarding this process and how feedback can be submitted. 

Following this stage, it is anticipated that we will appoint a delivery partner in mid 2026 to commence the final design. 

The proposed upgrade to the plant will be completed within the existing site. The maps below show the approximate location and proposed new infrastructure works plan. 

When we’ve finished the job, we’ll leave things how we found them and return any areas we’ve impacted as close as possible to their original condition. 

Where we will be working

Source: Map data © 2022 Google MyMaps

Purple legend icon  Location of upgrade works within the Longwarry Water Recycling Plant

Frequently Asked Questions

Our infrastructure program involves replacing, maintaining and upgrading the existing water and sewerage infrastructure above and below the ground, so you can always rely on us when you need a drink, a bath, to wash the clothes or dishes and every time you flush or send water down the drain.

The WRP upgrade is in the early planning phase, which will include applying for a Development License from the EPA in early 2026. Following this stage, it is anticipated that we will appoint a delivery partner in mid 2026 to commence the final design of the upgrade. Construction is anticipated to commence in early 2027 (subject to approvals) and will be completed in stages until mid 2029.

No. If you experience any disruption to your water or sewerage services please call our 24/7  Faults and Emergencies team on 13 28 12.

Construction hours will be Monday to Friday between 7 am and 6 pm and on Saturday between 7 am and 1 pm.  On the odd occasion, we might need to work at other times for safety, technical or permit reasons.

Early works to prepare the plant for the upgrade is anticipated to commence in 2026. More information will be available once the scope and timeframe is confirmed.

Visual amenity - residents may notice new above ground infrastructure as a result of the upgrade to the WRP.

Noise - the upgraded WRP will be designed to meet the noise level limits set by the EPA. No noticeable increase in noise will be evident following completion.

Odour - the upgrade will be designed to reduce odour within the plant to meet limits set by the EPA. It is not anticipated that any noticeable odour will be detected from the upgraded WRP.

There is no cost to the property owner for these works. 

When we’ve finished the job, we’ll leave things how we found them and make sure we return any areas we’ve impacted as close as possible to their original condition.

Need to get in touch?

We're here to help.

Contact us via phone

1800 961 899

Call now

Contact us via email

engagement@sew.com.au

Email us

Contact us via post

Longwarry WRP Upgrade
South East Water
PO Box 2268
Seaford VIC 3198

Translator Interpreter service

All languages 03 9280 0779

National Relay Service (NRS)

TTY: 13 36 77 (ask for 131 851)