Why we’re a good fit.
At Rainer Irrigation, water is more than just a resource—it’s part of our heritage. Since our establishment in 1989, our family-owned business has been rooted in the heart of Ashburton, an area celebrated for its fertile cropping soils, rich river terraces, and rolling foothills. These landscapes, stretching into vast grazing lands, thrive on abundant spring water, ideal for nurturing livestock and producing essential winter feed.
Read more
With four generations involved in the company and farming in our own right, we bring a profound understanding of the unique challenges faced by the agricultural sector. Our personal connection to farming fuels our commitment to providing tailored solutions that support the diverse needs of farmers. This dedication is reinforced by a highly skilled team, which includes expert designers and a dedicated electrical division, enabling us to manage projects seamlessly from start to finish. With Rainer Irrigation, you’ll work with a single, cohesive team of specialists throughout your journey.
Our team of around 80 experienced professionals brings decades of industry expertise, offering unmatched support from initial consultation to completion. Developing an effective irrigation system involves navigating numerous factors, from consents and terrain types to pump sizes and coverage areas.
We approach every project with a focus on creating efficiencies, ensuring each system is tailored to meet both the immediate and long-term needs of the farm.
By staying at the cutting edge of irrigation technology and prioritising sustainability, we deliver solutions that are innovative, cost-effective, and environmentally sound. While our scale enables us to handle projects of any complexity, the family remains at the core of the business. At that core lies a passion for irrigation technology—a passion that continues to drive our commitment to shaping the future of water management for generations to come.
With four generations involved in the company and farming in our own right, we bring a profound understanding of the unique challenges faced by the agricultural sector. Our personal connection to farming fuels our commitment to providing tailored solutions that support the diverse needs of farmers. This dedication is reinforced by a highly skilled team, which includes expert designers and a dedicated electrical division, enabling us to manage projects seamlessly from start to finish. With Rainer Irrigation, you’ll work with a single, cohesive team of specialists throughout your journey.
Our team of around 80 experienced professionals brings decades of industry expertise, offering unmatched support from initial consultation to completion. Developing an effective irrigation system involves navigating numerous factors, from consents and terrain types to pump sizes and coverage areas.
We approach every project with a focus on creating efficiencies, ensuring each system is tailored to meet both the immediate and long-term needs of the farm.
By staying at the cutting edge of irrigation technology and prioritising sustainability, we deliver solutions that are innovative, cost-effective, and environmentally sound. While our scale enables us to handle projects of any complexity, the family remains at the core of the business. At that core lies a passion for irrigation technology—a passion that continues to drive our commitment to shaping the future of water management for generations to come.
We offer a range of solutions to meet all your irrigation needs.
We’re a family owned business based in Ashburton.
Irrigation Design Accreditation

We are accredited with Irrigation New Zealand to design fit for purpose irrigation systems to the current New Zealand Piped Irrigation Systems Design Code of Practice and the New Zealand Piped Irrigation Systems Design Standards. This requires us to adhere to six main objectives:
- To gather the information required for irrigation design inputs.
- To specify an irrigation system which meets the required performance indicators.
- To design an irrigation system which performs to specification.
- To apply irrigation water efficiently and responsibly.
- To ensure that the designed irrigation system can be operated safely.
- To comply with all regulatory requirements, including consent conditions.
The accreditation programme requires our design work to be audited regularly.
