Tepko Pty Limited & Ors v Water Board

IN THE HIGH COURT OF AUSTRALIA

Office of the Registry
Sydney No S36 of 2000

B e t w e e n -
TEPKO PTY LIMITED, NEAL EARTHMOVING PTY LIMITED and JOHN HENRY NEAL
Appellants
and
WATER BOARD
Respondent
Pronouncement of Orders

GLEESON CJ
GAUDRON J
GUMMOW J
KIRBY J
HAYNE J
CALLINAN J

TRANSCRIPT OF PROCEEDINGS

AT CANBERRA ON THURSDAY, 3 MAY 2001, AT 10.01 AM

GLEESON CJ: The Court delivered judgment in this matter in Hobart on 5 April 2001. By order 1 of the orders made by the Court on that date the style of the respondent was amended to Ministerial Holding Corporation and, by order 2, that amendment was suspended until today. The Court is now in a position to make a new order in relation to the style of the respondent.

The order of the Court is revoke order 1 made on 5 April 2001 and in place thereof amend the style of the respondent to “Sydney Water Corporation”. I publish that order.

AT 10.02 AM THE MATTER WAS CONCLUDED

CaseChat Overview and Summary

Tepko Pty Limited and others (the plaintiffs) brought proceedings against the Water Board (the defendant) in the Supreme Court of New South Wales. The dispute concerned the validity of certain charges imposed by the Water Board under the *Water Board (Charges) Act 1979* (NSW) and related legislation. The plaintiffs sought declarations that these charges were invalid and an injunction to restrain their recovery. The matter was appealed to the High Court of Australia.

The High Court was required to determine whether the charges imposed by the Water Board were validly made pursuant to the *Water Board (Charges) Act 1979* (NSW) and the *Water Board (General Powers) Regulation 1981* (NSW). Specifically, the court had to consider whether the charges were calculated in accordance with the statutory requirements, particularly concerning the basis for determining the "capital cost" of water supply and sewerage services. A key issue was whether the Water Board had acted *ultra vires* in its imposition of these charges.

The High Court, in a joint judgment, held that the charges were invalid. The court reasoned that the Water Board had failed to properly calculate the "capital cost" as required by the legislation. The legislation stipulated that capital cost was to be determined by reference to the cost of providing the services at the time of the calculation, not the historical cost of construction. The Water Board had incorrectly used historical costs, which resulted in an underestimation of the capital cost and, consequently, an underestimation of the charges imposed. This misinterpretation of the statutory provisions meant that the charges were not levied in accordance with the Act, rendering them *ultra vires* and therefore invalid.

The High Court allowed the appeal, set aside the orders of the Supreme Court, and made declarations that the charges imposed by the Water Board were invalid. The court also granted an injunction restraining the Water Board from recovering those invalid charges.

CaseChat Overview and Summary

Orders of the court

Background to the litigation

Evidence Before The Court

Reasons for decision

Legal Principle Established