Wellington Water Board

Board Member

Mahina Puketapu

Mahina Puketapu has held various roles in investment and finance across the public service and private sector culminating in her current role as Chief Investment Officer at Tauhara North No.2 Trust.

Mahina holds a Master of Business and Administration from the Victoria University of Wellington and has recently transitioned into Governance roles.

She brings to Wellington Water her governance experience from sitting on Iwi post settlement entities, commercial investment boards and the Institute of Finance Professionals NZ. She is excited to join the Wellington Water Board at this time of transition and to support the implementation of the changes ahead for the benefit of councils, ratepayers, and stakeholders.

Mahina is born and raised in Wellington and is of Te Āti Awa and Taranaki Iwi descent.

Board Member

Bill Bayfield

Bill Bayfield has recently completed a long career in both Regional and Central Government. He has previously been CEO at the Regional Councils in both Canterbury and Bay of Plenty and more recently, he was the CEO of the new national water regulator, Taumata Arowai, where he was responsible for its establishment.

Bill brings with him a wealth of knowledge in water management and organisational management and performance. He was closely involved with the early phases and implementation of the Government’s Affordable Water Reforms programme. Bill is looking forward to bringing his skills and experience to the Board and assisting the organisation to ensure a successful transition throughout reforms.

Board Member

Gillian Peacock

Gillian has extensive experience in leading and delivering change. She is an experienced senior leader and business consultant. She is a HR praticioner experienced in strategic and operational roles in private, public sector and not for profit organisations.  She designs and implements people strategies to support organisational performance and deliver outcomes.

Gillian is an executive and leadership coach who understands what it takes to support people, make robust decisions and lead through change.  She works with a diverse range of individuals, teams and organisations to design, develop and deliver organisational structures, operating models and change management including developing change skills in leaders and team members, facilitating change conversations and delivering workshops that give managers and staff the skills and tools they need to cope with change.

Board Member

David Adamson

David Adamson is a Chartered Professional Engineer, a Fellow of Engineering New Zealand, and Director of Adamson Partners. With over 40 years of experience in the local government sector, he has led the design, procurement, and delivery of major infrastructure projects across the country—many focused on water, wastewater, and stormwater services. David has held governance roles in utility companies, national asset management bodies, and local government, always with a focus on delivering practical, resilient, and cost-effective outcomes for communities.

David brings to the Wellington Water Board a deep understanding of how to manage and invest in essential water infrastructure. Raised and educated in Porirua, he has a strong connection to the Wellington region and is committed to helping ensure safe, reliable, and sustainable water services. He looks forward to supporting the organisation and serving the people of the region during a time of change and opportunity.