Are your trees damaging the water supply or sewerage systems?
Certain trees and shrubs planted too close to sewers, drains, stormwater run-off pipes and water supply pipes can cause pipes to block or break. Plant roots penetrate any imperfections in pipes to access the water within. This could lead to major problems on your property that are extremely inconvenient and expensive to repair, including:
If you are concerned a tree on public land could be causing problems with the sewer main or your house connection point, please contact your local council.
What to plant
Directly above or up to 1.5m away from water supply and sewerage pipes:
Blue flax lily
Common tussock grass
Between 1.5m and 3m away from water supply and sewerage pipes:
Hairy bush pea
Broad–leaved palm lily
Beyond 3m away from water supply and sewerage pipes:
What not to plant
Golden cane palm
Gum tree (large species)
Lilly pilly (large species)
Umbrella tree (an environmental weed in this area)
West African tulip (this a Class 3 weed)
Willow (all types) (this a Class 3 weed)
Camphor Laurel (this a Class 3 weed)
Please note: This list is a guide only and is not all inclusive. Your local nursery will be able to advise as to the suitability of other plants that may not be listed here. Additionally, while Unitywater understands the plant species listed here for planting are not likely to cause any root damage to water supply and sewerage pipes, no guarantee towards this is made.