Injunction
4 In paragraph [232] I said that, subject to matters of detail and fine tuning, the plaintiffs are entitled to relief including the following:
(1) An order declaring that, as at commencement of these proceedings and since, the defendant has been guilty of nuisance in causing or allowing stormwater from St Johns Avenue, Gordon, to flow, directly and indirectly, onto the plaintiffs' land, No. 48 St Johns Avenue, Gordon.
(2) That the defendant, its servants and agents be restrained from causing or allowing stormwater to flow, whether directly or indirectly, from St Johns Avenue, Gordon, and from the footpath adjacent thereto onto the plaintiffs' land, No. 48 St Johns Avenue, Gordon.
(3) The foregoing injunction should be suspended for 6 months.
5 The plaintiffs propose an injunction in the form of paragraph (2) above. The defendant opposes that formulation, submitting that an injunction in that form would not be capable of being complied with literally and with certainty. In particular, the defendant says that, under the proposed wording, even a drop of water would be a breach of the injunction and that the wording does not specify the standard to which abatement work should be carried out. The latter point relates to evidence received concerning various standards in relation to municipal drainage works which have been promulgated and / or observed so far as practicable, at various times, (such as, for example, sufficient to accommodate stormwater underground, arising from a storm event with an average recurrence interval (ARI) of 20 years or less, with provision for floodway accommodation above ground for a storm event with an ARI of 100 years).
6 The orders made by consent on 20 September 1985 included the following order:
1. The Defendant its servants and agents be restrained from permitting, allowing or causing the flow of water from St. Johns Avenue, Gordon and the footpath adjacent thereto onto the Plaintiff's land at No. 48 St. Johns Avenue, Gordon ("the land") so as to create a nuisance.
7 On 11 November 1986, further consent orders were made, vacating the orders of 20 September 1985, but including an order in the same terms as order 1 above.
8 A problem arising from the orders of 11 November 1986 was that there was no agreement or determination as to whether the situation existing at that time constituted an actionable nuisance. That was a contested issue in the hearing before me. I decided that it did and that the nuisance has continued despite works since carried out by the defendant. The necessary implication is that the defendant has been in breach of the injunction made by consent on 11 November 1986 from that date to the present time.
9 The wording of the 1986 injunction, insofar as it includes the qualifying words "so as to create a nuisance", is close to the conventional form for an injunction to restrain the continuation of a nuisance. The conventional formula is "so as to occasion a nuisance" which covers continuation as well as initiation with greater certainty: Seton's Forms of Judgments and Orders, 7th ed. (1912), pp 595-597; Spry, The Principles of Equitable Remedies, 5th ed. (Law Book, 1997), p 375; Meagher, Gummow and Lehane, Equity Doctrines and Remedies, 3rd ed. (Sydney: Butterworths, 1992), [21,100]; Kennard v Cory Brothers & Co. Ltd [1922] 1 Ch 265, 340; Curro v Beyond Productions Pty Ltd (1993) 30 NSWLR 337, 348; Malliate v Sharpe [2001] NSWSC 1057 (Campbell J, 13 Dec 2001) at [50]-[52].
10 The conventional formula is utilised where no more specific order is made as to what the defendant is to do or not do: see Spry 374-5; Meagher et al. at [21,100]. No more specific order is warranted in the present case. At the hearing before me, the plaintiffs did not seek a mandatory injunction that the defendant carry out any specific works (nor would any such order have been made on the available evidence). The defendant, for its part, did not, on 19 December 2001, submit a formulation limiting the defendant's obligation under the proposed injunction by reference to a particular standard, although counsel for the defendant offered to do so if the court was minded to specify a standard in principle. The plaintiffs opposed any such qualification. I do not believe that a qualification referable to such a standard would be appropriate in this case.
11 The problem arising from the conventional formulation of the injunction as ordered on 11 November 1986, namely, that it was not established whether the situation then existing constituted a nuisance, no longer persists in view of my finding and proposed declaration that it did and that the nuisance has continued to this time.
12 It is, then, a matter for the defendant to devise and carry out whatever works are necessary to abate the nuisance. Whilst I have not made any finding as to what works it is necessary for the defendant to carry out in order to prevent the nuisance from continuing, the parties have my finding that carrying out the balance of the proposed 1999 works would not do so: paragraph [159]. I now add the following observation. On the evidence before me, the extension of the in-road drainage system proposed by Mr Lucas (see paragraph 112) would be a practical solution. Upgrading of the SDL and / or of its extension may be an alternative and cheaper solution (see paragraph [216]).