
133 Molesworth Street
PO Box 5013
Wellington 6140
New Zealand
T+64 4 496 2000
30 June 2026
Kay Robson-Thomas
By email: [FYI request #34694 email]
Ref: H2026083458
Tēnā koe Kay
Response to your request for official information
Thank you for your request under the Official Information Act 1982 (the Act) transferred from the
Environmental Protection Authority (EPA) to the Ministry of Health – Manatū Hauora (the
Ministry) on 2 June 2026. You requested:
“Three. The basis for the provisional Maximum Acceptable Value of 3.5 micrograms
per litre for 1080 in New Zealand drinking water including what toxicological studies or international guidance it was derived from?
Five. A copy of any review of the 1080 drinking water MAV that has been conducted
prior to 2021.”
The Ministry has identified three documents within scope of your request. Al documents are
itemised in
Appendix 1 and copies of the documents are enclosed.
I trust this information fulfils your request. If you wish to discuss any aspect of your request with
us, including this decision, please feel free to contact the OIA Services Team on:
[email address].
Under section 28(3) of the Act, you have the right to ask the Ombudsman to review any
decisions made under this request. The Ombudsman may be contacted by email at:
[email address] or by calling 0800 802 602.
Please note that this response, with your personal details removed, may be published on the
Ministry website at:
www.health.govt.nz/about-ministry/information-releases/responses-official-
information-act-requests.
Nāku noa, nā
Dr Andrew Old
Deputy Director-General Public Health Agency and Mental Health | Te Pūtahi Tūmatanui ā-Hauora ā-Hinengaro
Appendix 1: List of documents for release
#
Date
Document details
Decision on release
1
10 August 2011
Internal Memo: Review of
Released in full.
maximum acceptable value
(MAV) for sodium fluoroacetate
(1080)
2
3 December 2018
Pesticides (15 of them) in the
2008 DWSNZ with a PMAV set
by the Ministry.
3
2019
Excerpt from archived document: Some information released
Guidelines for drinking water
under section 16(1)(e) of the
quality management in New
Act by giving an excerpt of the
Zealand, Volume 3 Datasheets – contents.
Chemical and physical
determinands, Part 2.3:
Pesticides
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