15What is *drainage work*?

15 What is *drainage work*?

(1) Drainage work is the construction, installation, replacement, repair, alteration, maintenance, relining, testing or commissioning of any part of—

(a) a below-ground sanitary drainage system from the above-ground sewage or waste pipes to and including—

(i) the land application system; or

(ii) the connection to a holding tank; or

(iii) the connection with the discharge reticulation system exclusively vested in an authority that has a sewerage district under the Water Act 1989; and

(b) a below-ground stormwater drainage system from the above-ground stormwater pipes to the point of discharge; and

(c) any design work that is incidental to, or associated with, any work described in this subregulation.

(2) Drainage work does not include—

(a) the construction, installation, replacement, repair, alteration, maintenance, relining, testing or commissioning of—

(i) a subsoil drain for the sole purpose of subsoil water collection; or

(ii) stormwater pits, channels that are grated or below‑ground retention tanks; or

(b) any excavation of trenches, excavations using trenchless technology or directional boring.