Mackle admits there is still work to be done but hopes that people will acknowledge the work dairy farmers have done so far.
"Dairy farmers, quite rightly get sick of having the finger pointed at them, when actually a great majority of them have been making great progress in the last few years."
Dairying is only one land user in a country of many different land uses that have the potential to contribute to water quality issues, says Mackle.
"It's time we get start to get a bit more balance in the conversation."
Also in today's interview: Mackle talks about the big issues for DairyNZ in 2019, including Dairy Tomorrow, Mycoplasma bovis and climate change.
Listen below: