Region one: Northland
Total land area from Auckland Harbour to North Cape.
Region two: North Waikato
Total land area south from Auckland Harbour to a line from Maukutea Beach to Te Awamutu, following State Highway 3 to Hamilton along State Highway 26 to Morrinsville with a line to Tahuna, bounded by the Hapuakohe Range on the east through to Miranda Hot Springs.
Region three: Coromandel/Central Waikato
Total Coromandel land area to a line from Waihi down the Kaimai Range through to Waharoa to Morrinsville to Tahuna bounded by the Hapuakohe Range on the west through to Miranda Hot Springs.
Region four: Matamata/Piako/Otorohanga
Total land area south from Maukutea Beach, following Highway 31 and incorporating Oparau and Tihiroa; a line to and incorporating Te Awamutu; west of State Highway 3 to Hamilton, south of Highway 26 to Morrinsville; Waharoa to west of the Kaimai Ranges; south to Ngongotaha then a line west of Putaruru; west of Mangakino with the southern boundary being the Mokau River.
Region five: Bay of Plenty/South Waikato
Total land area east of a line from Waihi, east of the Kaimai Ranges to Ngongotaha, then west incorporating Putaruru; a line south incorporating Mangakino and Taumarunui to Horopito; east to the Gentle Annie, a line to Te Haroto following the Mohaka River to the East Coast.
Region six: Taranaki
All Taranaki Province from the northern boundary of the Mokau River with the eastern boundary from Mokauiti to west of Taumarunui and Horopito, following the Whanganui river to Parikino then a line to Kai-iwi.
Region seven: Hawke’s Bay/Manawatu/Wellington
All land area east and west of the Ruahine and Tararua Ranges to Cook Strait with the western boundary being the Whanganui River to Parikino then a line to Kai-iwi, the northern boundary being highway 49 from Horopito to Waiouru; a line to Moawhango through the Gentle Annie to Te Haroto following the Mohaka River to the East Coast.
Region eight: Upper South Island/West Coast
All land area comprising the district boundaries of Kaikoura, Marlborough, Nelson, Tasman, Buller, Grey, and Western Districts.
Region nine: Lower South Island
All land comprising the regional boundaries of Canterbury, Otago, and Southland regions.
Schedule 3 Region three: Coromandel/Central Waikato: amended, on 26 July 2002, by regulation 13(a) of the Dairy Industry (Herd Testing and New Zealand Dairy Core Database) Amendment Regulations 2002 (SR 2002/209).
Schedule 3 Region seven: Hawke’s Bay/Manawatu/Wellington: amended, on 26 July 2002, by regulation 13(b) of the Dairy Industry (Herd Testing and New Zealand Dairy Core Database) Amendment Regulations 2002 (SR 2002/209).