Register of Community Drinking-Water Supplies in New Zealand
2002 Editionpage 1 of 7
Date of publication: June 2002
Compiled by the ESR Water Group for the Ministry of Health
Published with the permission of the Director-General of Health in June 2002 by the Ministry of Health, PO Box 5013, Wellington, New Zealand, 2002 Edition (11th Edition).
ISSN 1173-1745 (Book)
ISSN 1174-9814 (Internet)
This Register lists the information available to the Ministry of Health about community drinking-water supplies in New Zealand.
Community drinking-water supplies are drinking-water supplies serving 25 or more people for more than 60 days a year. This includes many schools, permanent camp sites and marae.
For each supply, the source of water, the plants where water is treated and the distribution zones are listed, together with any provisional public health gradings which have been given and contaminants of public health concern (Priority 2 determinands) known to be present.
The aim of the Register is to provide easily accessible information about community water supplies. If your supply is not listed here, send the name and address of the water supplier to:
Register of Community Drinking-water Supplies in New Zealand, Ministry of Health, PO Box 5013, Wellington.
The supply will then be included in future editions of the Register.
Document availability
This publication is only available on this website. You can read online here.
Contents
Foreword
Acknowledgements
Quick Reference
User’s guide to the Register
Summary Information
Glossary
Register Tables
Index to Communities
Foreword
This edition of the Register of Community Drinking-Water Supplies in New Zealand supersedes the 2001 (10th) edition printed in July 2001. Like the earlier edition, it includes information on the Ministry of Health’s public health grading of community drinking-water supplies and the presence of substances at concentrations that may be of public health significance.
This edition defines 1,875 community drinking-water supplies, a net increase of 27 (representing 85 additions and 58 deletions) over the previous edition. For these supplies, 459 Priority 2 determinands are listed, compared with 443 previously.
The introductory section and Register format are designed so that the information presented can be clearly understood by those without technical knowledge of drinking-water management.
Readers should note that the public health gradings listed are provisional because they are based on the Drinking-Water Standards for New Zealand 1984, which have been superseded by the Drinking-Water Standards for New Zealand 2000.
The Ministry of Health will finalise a new public health grading process during 2002 and this will begin to be applied to supplies later this year. Once sufficient data are available, gradings with the 2000 Standards will be applied.
The 2003 edition of the Register will include an assessment for each supply of progress in creating and implementing public health risk management plans.
Acknowledgements
The Register of Community Drinking-Water Supplies in New Zealand is maintained as part of the Water Information New Zealand (WINZ) database system for drinking-water by the Water Group of ESR, a Crown Research Institute. This work is performed under contract to Public Health Regulatory Services of the Ministry of Health.
Information for the creation and amendment of individual supply records is gathered by health protection officers of the District Health Boards, with the close co-operation of officers of the territorial local authorities.
Any comments or suggestions regarding the Register are welcome and should be addressed to:
The Manager
Public Health Policy and Regulation
Ministry of Health
PO Box 5013
Wellington
or
Barry Mattingley / Alan Ferguson
Water Group
ESR
PO Box 29-181
Christchurch
Quick Reference
Finding a supply
- Supplies in the Register are grouped by health district.
- Supplies within a health district are listed in alphabetical order.
- Health districts in New Zealand are listed from north to south.
- Here is a link to the full index of communities.
Understanding the tables
- Figure 3 explains the details of a typical Register entry.
- Read the User’s Guide section following for a fuller understanding.
The public health grading
The Ministry of Health grading provides an assessment of its confidence in the public health safety of each drinking-water supply serving a community of over 500 people. The grading has two letters. The first letter (capital) represents the source and treatment grading, while the second letter (lower case) grades the water in the distribution zone itself. Gradings containing “C” or “c” indicate marginal quality, while lower gradings show that quality or risk management is unsatisfactory.
An ungraded supply is indicated by “u” in the Register.
Source and treatment grading
Assessment based on source and treatment factors:
| A1 | Completely satisfactory, negligible level of risk, demonstrably high quality |
| A | Completely satisfactory, very low level of risk |
| B | Satisfactory, low level of risk |
| C | Marginal, moderate level of risk, may be acceptable in some small communities |
| D | Unsatisfactory, high level of risk |
| E | Completely unsatisfactory, very high level of risk. |
Distribution zone grading
Assessment based on reticulation condition, management, and actual water quality:
| a | Completely satisfactory, negligible level of risk, demonstrably high quality |
| b | Satisfactory, low level of risk |
| c | Marginal, moderate level of risk, may be acceptable in some small communities |
| d | Unsatisfactory, high level of risk |
| e | Completely unsatisfactory, very high level of risk. |
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