Farm dairy effluent
There are approximately 950 dairy farms operating in Northland, with a total of 329,414 dairy cows and an average herd size of 300. The average milk solids produced per cow in the 2013/14 season was 313 kilograms.
Importance to the Northland economy (2014/15 statistics)
Milk solids production: 90.3 million kilograms
Value of milk production: $420 million
Number employed directly/indirectly: Approximately 3000 (including both on-farm and processing/wholesaling).
 New Zealand Institute of Economic Research (2014). QuickStats about Dairying – Northland Region, New Zealand Dairy Statistics, Statistics New Zealand. http://www.dairyatwork.co.nz/media/16634/QuickStats-about-dairying-Northland.pdf
 Livestock Improvement Corporation Limited and Dairy NZ Limited (2014). New Zealand Dairy Statistics 2013-14.
Find out about the rules that apply to the discharge and management of animal effluent.
Maintaining and enhancing water quality in our rivers and coastal waters.