Water Quality Awareness 101 18 | P a g e  Plants that require regular maintenance, pruning or pest spraying to ensure their upkeep can introduce additional hazards to water quality Trees starting to intrude onto storage tanks, causing roof impact damage or root intrusion Overhanging trees allow vermin access to roof areas and deposit leaf debris 11.3.2 Solutions  Plan landscaping to minimise weed growth and the need for on-going weed maintenance  Select plants that will not undermine tanks with root intrusion and will not deposit leaves/branches or overgrow the sites of water storages or treatment facilities  If planting flora that will attract native wildlife, conduct a careful assessment to ensure that attracted wildlife will not subsequently impact the drinking water quality (nesting on infrastructure and defecating in and around drinking water assets)