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Kōrero: Engineering on the sea floor

From sewer outfall to marine reserve, Ōwhiro Bay

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From sewer outfall to marine reserve, Ōwhiro Bay

The only indication that there was a sea-floor structure just offshore of this beach at Ōwhiro Bay, Wellington, was the warning sign. Most of New Zealand’s towns and cities are on the coast and pump their sewage through pipes into the ocean. Until the 1990s much of this waste was untreated. The Ōwhiro outfall was closed in 1994. Although it remained as an emergency outfall for some time, this has been closed and Ōwhiro Bay is now part of the Taputeranga Marine Reserve.

Te whakamahi i tēnei tūemi

Private collection

by Alastair McLean

This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.

Ngā whakaahua me ngā rauemi katoa o tēnei kōrero

Me pēnei te tohu i te whārang

Keith Lewis, Engineering on the sea floor – Coastal works, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/mi/photograph/6645/from-sewer-outfall-to-marine-reserve-owhiro-bay (accessed 4 June 2026).

He kōrero nā Keith Lewis, i tāngia i te 2 March 2009.