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We continue to use Online for their reliable and timely service. Their modern CCTV equipment and experienced operators are great.


Woolhara Council

I’ve used OnLine’s services for close to 23 years. We have built a great working relationship based on efficient and professional service and I will continue to use OnLine.


D & W Plumbing

We have a long held relationship with OnLine, they have very experienced operators and their availability is fantastic.


A & G Professional Plumbing

OnLine are a great team to work with. Their prompt timing, friendly service and cutting edge technology suits our business requirements accurately.


Robson Civil

I have been working with Online for many years. I am impressed with their modern equipment and availability. Their operators are always on time and get the results we need.


Blacktown Industrial Plumbing

I appreciate OnLine’s availability, professional service and the great results we can achieve with the modern equipment they use.


SN King Plumbing

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Fact File - Sydney's Tank Stream

16-Oct-2015 Water, drains, and sewers. We take them for granted (until there's a problem) and rarely give consideration to how a city’s sub-surface infrastructure develops over time. Here are some interesting facts about Sydney’s Tank Stream.
  • After a drought in 1789 when Sydney’s water supply was almost exhausted, the Governor ordered 3 tanks be cut into the sandstone of the stream (near Hunter and Pitt Streets) to act as a reservoir. (1)  
  • Professor John Smith dated the tank about 1802. (2)
  • By 1826 pollution caused the Tank Stream to be abandoned as a source of water supply. Water was carted from Lachlan Swamp - the  ponds in Centennial Park -  to a watering point in Hyde Park. (3)
  • In the 1820’s John Busby proposed cutting a tunnel from Lachlan Swamp to Hyde Park – key for the enactment of The Sydney Water Supply Act  (1833) – inaugural legislation relating to Sydney’s water supply. (4)
  • Construction of Busby’s bore commenced in 1827 and completed in 1837, with the Tank Stream becoming the sewer and rainwater drain. Sydney’s population hit 20,000+. (5) 
  • Busby’s Bore was capable of delivering 400,000 gallons of water per day; a 15 million gallon reservoir that was to be built at Hyde Park failed to eventuate; and during a drought in 1838/39 though Busby’s Bore did not run dry, the townsfolk were forced to pay 5 cents per bucket of water. (6)
  • Today the Tank Stream is part of the storm water system for Sydney’s CBD. (7)
  • A fountain in Herald Square, Circular Quay, celebrates the Tank Stream and its historical significance. (8)

    Sydney's Tank Stream

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(1)-(6):   Hector, D., 2011. Royal Society of New South Wales. [Online]  Available at:,2_Hector.pdf [Accessed 16 October 2015].  pp. 1, 5
(7), (8):  City of Sydney, 2015. Water Water Every Where. [Online] Available at: [Accessed 15 October 2015]