Groundtruth Ltd have produced a guide to constructing wetlands on farms in conjunction with Sustainable Wairarapa Incorporated. Dairy NZ and Pamu supported a Sustainable Farming Fund project which assessed the cost-benefit of various on-farm activities for removing contaminants from waterways and improving biodiversity. Monitoring over the last 3 years has shown that a wetland can be very cost-effective at removing nitrogen from farm drainage water. If you are interested to learn more download the guide to getting started on this exciting and effective technique to help waterways in your area.