Key Contacts

Kerry Turner
Kerry TurnerGeneral Manager
Kerry has been in the irrigation industry since 2000, both managing and designing. He has a Bachelor of Agricultural Science Degree, a Diploma in Management, N.Z. Certificate in Quality Assurance and a National Certificate in Irrigation Design. Brought up on a farm in South Canterbury, Kerry has worked as a Scientist for the Water and Soil Division of the Ministry of Works, then in soil conservation in Taupo and Gisborne. He also used to own a garment manufacturing business making Swanndri clothing.

027 488 2056

Jon O'Sullivan
Jon O'SullivanDesign Manager
Jon has a Bachelor of Science in Geology, Growsmart VRI qualification and National Certificate in Irrigation Design. He has worked for Grafton Irrigation since 2013, Bought up in South Canterbury, Jon previously worked as an Agricultural Contractor.
Keen Supporter of Timaru Old Boys Rugby.

027 381 9356

Tarissa Sloper
Tarissa SloperAdministration Manager
Tarissa started working for Grafton Irrigation in October 2019. She has over four years of administration experience within the agricultural industry. Tarissa qualified with a Certificate of Professional Office Management in 2015.

03 687 1234

Colin Bird
Colin BirdRepairs & Maintenance Supervisor
Colin has had water meter training with ABB, Krone and Siemens. He was born in Zimbabwe and immigrated to New Zealand in 2002. Colin spent 13 years in irrigation and joined Grafton in 2010. He spent four years with ECAN in the water metering space. Colin is a keen fisherman and outdoor bowler.

027 435 9565

Johnny Grumball
Johnny GrumballOamaru Field Manager
Johnny is a Fitter/Welder by trade and has spent over 15 years of Irrigation Engineering. He was an Engineer at Wallace and Cooper and Maintenance Engineer at Fairlie Wool Scour prior to joining Grafton Irrigation in 2012.

027 488 2097

Timaru office


44 Rothwell St, Redruth, Timaru 7910

PO Box 3031, Watlington, Timaru 7943

Ph: 03 687 1234
Fax: 03 688 3927

Glenavy office


14 Innes St, Glenavy

Ph: 03 689 3806

Oamaru office


23 Chelmers St

Ph: 027 488 2097