Dr Scarsbrook says since the last State of Environment report more than eight years ago, dairy farmers have taken a lot of voluntary actions on farms to reduce dairying's footprint.
"For example, two years ago we launched a new Water Accord covering all dairy farmers. Dairy companies have reported on nearly 24,000 kilometres of waterways, that's 94 per cent, from which all stock are now excluded. This report released today has identified a 14 per cent improvement in water clarity since 1989 linked to stock exclusion, which keeps sediment out of waterways by protecting banks and beds from collapse.
"Improvements will now continue at pace as more of the 'exclusion' effect is felt. With dairy farms now also managing soil structure and runoff to waterways with grass filters and plantings, we can also expect considerable further improvement to nutrient concentrations, algae and biodiversity. More robust and regular reporting on all our Water Accord commitments is allowing the dairy industry to focus support where it is needed most urgently.
"The rate of significant non-compliance for farm dairy effluent systems for the 2013/14 season was 7 per cent, down almost half on 2012. While we are still confirming the numbers for the 2014/15 season, this trend is continuing to improve," he says.
"Farmers have made big investments in environmental initiatives themselves and through the $13 million each year of DairyNZ investments that include 15 large waterway projects nationwide, the Waikato Wetlands Showcase and delivering hundreds of Sustainable Milk Plans direct to farmers alongside regional council initiatives. We are also doing research into mitigating soil compaction.
"Our surveys show that farmers themselves have also put their money into our environment. More than $1 billion over the past five years has been spent by farmers in effluent systems, riparian planting and retiring sensitive land. That equates to $90,000 by each dairy business throughout New Zealand."
Dr Scarsbrook says robust and independent monitoring of the implementation of more than 600 Sustainable Milk Plans in the Upper Waikato alone are generating marked reductions and positive results in nutrient loss to waterways.
"We are not waiting for rules to be put in place -- farmers have taken thousands of on-farm actions in the Upper Waikato and across the country. We are all about farming responsibly and putting the right practices in the right places for the long term -- that means we are learning all the time about what works best and trying to perform even better."
The dairy industry is currently evolving, he says. "We are changing to new farming techniques and systems with a lower environmental footprint while ensuring the country, and particularly rural towns and communities, can continue to benefit from farmers remaining competitive and profitable.
"Nutrient management is our next big challenge and we're working with councils to ensure rules are put in place that reflect local community aspirations for water use and quality," says Dr Scarsbrook.
