Rainworld started business trading as "Green Line" in 1978 in small premises in Wilson Street, Wodonga. In 1985, Rainworld was used as the trading name and the business relocated to Beechworth Road, Wodonga.

Whilst predominately based on domestic watering system installations, the business also completed large projects for the Army at Latchford Barracks and the new Wodonga Country Club.

The business changed hands in 1988 and again moved, this time to 52 High Street in Wodonga. These premises had a larger yard, needed to accomodate the growing numbers of vehicles and machinery and stock acquired through a steady growth phase.

In 1991, the business was advertised for sale as the co-owners had decided to pursue different opportunities. Rainworld became part of the Shepparton Irrigation organisation. From this point on, the business changed focus, targeting the agricultural sector which had been serviced in the past by "out of towners" and which could lead to a more even balance of installation markets. Success in a new market came slowly but surely, and as a result the premises in High Street became unworkable, not to mention life threatening when trying to reverse into the main street of Wodonga. As a result, a new building at Reid Street was selected and the move was made in 1993. In 1994, the opportunity for a buy out became available to the current Management, Mick and Nancy.

The business again changed hands on 17th October. The level of business immediately increased, due in part to the long years of hard work by the staff but almost certainly because the company was now locally owned again. Since 1994, Rainworld has captured a leading market share in the viniculture, horticulture and pumping markets throughout North East and Central Victoria and Southern New South Wales. Another important and developing market has been the off stream disposal of treated waste water. The Company has delivered 4 of the highest award winning disposal systems, being the Albury City Council's Floodplain and Waterview facilities, Picton Waste Water Irrigation System for Sydney Water and Dubbo wastewater reuse scheme.

In 2005, due to rapid expansion, the Company again found itself in need of more space and the choice was made to move to our present location in Osburn Street, Wodonga. In recent times Rainworld Irrigation has also been concentrating on larger scale Civil works for local water authorities and Councils, including the supply and installation of trunk water mains and installation of pump stations. Future markets are identified in the changing of flood irrigation culture, which will be part of legislature in the near future as well as the design, supply and installation of pressurized pipelines to replace the existing channel system Rainworld has a reputation for delivering a quality product on time and on budget with minimal or no variations.