Josh Trlin
What are the challenges facing the Inlet?
The Inlet is facing a range of challenges – most notably major silt and sediment build-up and pollution from insufficient storm and wastewater infrastructure. This is a major issue in terms of harbour sustainability and preservation of the local ecology.
Silt and sediment build up has always occurred in the harbour but has massively accelerated due to the developments occurring in Porirua. Everything from land clearance for farming to new housing developments through to Transmission Gully has created a huge amount of runoff that is filling the harbour up much faster than it is able to naturally clear. In the last five years the amount of sediment has doubled, and if we don’t act soon to slow this down we could reach a point of no return for harbour health.
Pollution from insufficient storm and wastewater infrastructure occurs because of storm events overwhelming the system and flushing waste into the harbour. This will only get worse as we get more regular and intense storm events due to climate change and pressure builds due to population growth.
Failure to act quickly on both of these issues will be of major harm to the health of Pāuatahanui Inlet.
What are your priorities for the Inlet?
Preservation and restoration of the entirety of Te Awarua-o-Porirua Harbour is one of my absolute top priorities, and this is inextricably linked with the health of Pāuatahanui Inlet. I want to make sure we dramatically reduce both the silt and sediment runoff that is choking the harbour and pollution from our insufficient water networks. In doing so it is incredibly important that council works with the kaitiaki of Te Awarua-o-Porirua Harbour, Ngāti Toa.
Silt and sediment runoff will never be fully prevented as some happens naturally – in fact, the local ecology has evolved to account for a certain degree of it occurring. However we can dramatically reduce the amount occurring by both implementing better development practices and investing in better land management, including replanting, in key locations around the harbour and Inlet.
On pollution I want to get out ahead of the increased strain on infrastructure we know is coming from population growth and climate change by investing in upgrading our water networks.
By reducing all forms of pollution contaminating the harbour and Inlet we can begin the process of healing – a process that is important both for local residents and ecology alike.
What would do about these challenges and priorities if you’re elected?
First and foremost, any work we do on Te Awarua-o-Porirua Harbour and Pāuatahanui Inlet must be done in partnership – with Ngāti Toa as the kaitiaki, with Wellington City as an exacerbator of our harbour’s poor health, with GWRC as the regulator, and with central government.
If elected I will push for development practices to be altered in order to reduce silt and sediment runoff. That looks like changing consenting processes to require sufficient evidence of runoff prevention and minimisation and developing a comprehensive erosion and sediment control management plan.
We need to improve our land management through programs like replanting in key remnant areas, and do so in partnership with local landowners who also have an interest in the harbour’s health.
We need better infrastructure management and to properly invest in both improving wastewater networks to reduce overflow events, and increasing maintenance of our networks to minimise dry weather leaking – an issue that causes sustained pollution even through the summer months when people are using the harbour more.
I’m apprehensive when it comes to dredging as some are proposing due to the impact it is likely to have on harbour health, and the damage that it would cause to our rare and fragile ecosystem. For me to support any case for dredging it would have to guarantee that it would not destroy the local ecosystem and in fact benefit harbour health in the long run.
We need to give the harbour and Inlet every opportunity possible to begin properly healing from the severe damage it has undergone – particularly in recent years. <Back to top>
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