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Sewer blockages

Sewer blockages are caused when rubbish that can’t break down gets trapped in the sewer system. Blockages are costly to clean up and are a risk to our environment and waterways.

Slow draining toilets or drains, bubbling noises, or overflow from your plumbing or overflow relief gully can all be signs of a blockage. Know what you can and can’t put down the drain to keep your drains and pipes healthy.

If your pipes are blocked, contact us and we'll ask you some questions. Blockages can be treated by a licensed plumber, drain cleaner or Coliban Water depending on the location and type of blockage. Treatment may include cleaning or relining your pipes.


Tree roots

Tree roots can intrude into pipes, catching oils and rubbish. This can reduce the flow of sewage and cause costly blockages.

To protect your pipes from tree root damage:

  • Locate your pipes before planting trees or shrubs. Contact CIS Services, who manage sewer pipe information in Victoria.
  • Plant a safe distance from pipes.
  • Ask your local council about nature strip requirements.
  • Know which species to plant using Coliban Water Smart Gardens.


Protect your sewer network, don’t block it.

There are many items that shouldn’t be put down the sink or flushed down the toilet.

The sewer network and our treatment plants are not designed to treat these and they can cause blockages and sewer spills.

You would be amazed at what turns up in our treatment plants, everything from toys to clothing and nappies.

The cost to dispose of this is a cost to all of us.

Download our latest brochure now.

In the bathroom

Wet wipes, paper towel, tissues, ear buds and sanitary products take years break down.

Old medication, nappies and ear buds often make their way through our system.

Only flush the three Ps; Pee, Poo and Toilet Paper.


In the kitchen

Fats, oils and grease build up and blocks our pipes, causing sewer spills that damage our waterways and the environment. 

Check with your local council to see where you should dispose of your oils.

Tip food scraps and coffee grounds in the compost or rubbish bin before you rinse your plate and use a strainer to block any remaining debris.

Be careful with what you put down the kitchen sink. Only water should go down the drain.


Around your home

Protect the environment and avoid pouring chemicals and paint from your home down the drain.

Petrol, oil and sprays can damage our waterways as well as killing the good bacteria at our treatment plants.

Contact your local council to find out how to dispose of chemicals and paint.

Last updated on 28 Jul 2023
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