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About Us

Tim Giddens

Managing Director

Tim along with his wife Courtney and their two sons, Chase and Max, have called Dunedin their home since joining the West Harbour Community in 2014. Tim has over 20 years’ experience in the drainage and three waters infrastructure industry. Having worked across New Zealand and Australia for some of their largest infrastructure maintenance providers, he brings a wealth of knowledge to the liquid waste industry.

Tim enjoys being able to problem solve for customers to offer extra insight whether he is emptying a residential septic tank or creating a storm water management plan for a commercial client. While his passion is with liquid waste, when he is not hard at work, you can find him supporting his local Harbour Hawks rugby team.

Courtney Giddens

Commercial Lead

Courtney is OVTS’ Commercial Lead and behind the scenes project manager, sales and all things administration guru. Having been immersed in the diverse world of HR and sales, in the US, Australia and New Zealand over the last 14 years, Courtney and her bubbly personality enjoy being the first port of call for all of our customers while running OVTS’ ongoing projects and driving sales.

Originally from America, Courtney along with her family has called Dunedin home since 2014. You can generally find Courtney near the water in her spare time, and making the most of what her local Aramoana community has to offer with her family and dog (Beth).

Simon Spark


Simon is an Otago/Southland local with over 30 years' experience in the New Zealand liquid waste industry. He and his wife Lisa own and operate SJ Allen Holdings Ltd, which are well known for being waste and event management specialists servicing all of Central Otago.

Being an expert in the liquid waste management field, there aren't many problems Simon can't solve. When he is not in his hi-vis hard at work, Simon is an avid rugby fan and enjoys spending time pottering around his orchard with his family.

In the Community

OVTS are proud sponsors of the Harbour Hawks Junior Rugby Club and enjoy being involved in the local West Harbour and wider Dunedin Community. We also support the Aramoana Community and League.