AS/NZS 4020:2005
Testing of products for use in contact with drinking water
To allow water quality requirements, as adopted by the particular authority responsible for water supply quality, to be met at consumers’ taps. Besides the effects of materials, this quality will depend on other factors, including commissioning and operational procedures such as flushing of mains, which are the responsibility of the local water agency.
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AS/NZS 4020:2005 TESTING OF PRODUCTS FOR USE IN CONTACT WITH DRINKING WATER
PREFACE
CONTENTS
FOREWORD
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Anaerobic adhesive
3.2 Colour (true colour)
3.3 Composite product
3.4 Cytotoxic
3.5 Drinking water
3.6 End-of-line fitting
3.7 Extract (leachate)
3.8 Extractant water
3.9 Maximum holding water temperature
3.10 Mutagenic
3.11 Organoleptic
3.12 Product
3.13 Sample
3.14 Scaling factor
3.15 Taste panellist
3.16 Test water
3.17 Threshold dilution
3.18 Turbidity
3.19 Water fitting
4 TEST SAMPLES
4.1 Selection and preparation of samples
4.2 Range of product sizes
4.3 Product exposure
5 SCALING FACTORS
5.1 General
5.2 Determination of scaling factors
5.3 Application of scaling factors (see Paragraph B3 Example 1)
5.4 Restrictions on the use of scaling factors
6 TEST REQUIREMENTS
6.1 General
6.2 Taste of water extract
6.3 Appearance of water extract
6.4 Growth of aquatic micro-organisms
6.5 Cytotoxic activity of water extract
6.6 Mutagenic activity of water extract
6.7 Extraction of metals
6.7.1 Products in general
6.7.2 End-of-line fittings
7 HOT WATER TESTS
APPENDIX A - SAMPLE PREPARATION
A1 SCOPE
A2 APPARATUS
A2.1 Sample storage bags
A2.2 Glass plates
A2.3 Test containers
A2.4 Temperature-measuring device
A2.5 Relative humidity-measuring device
A2.6 Glass-encapsulated weights
A3 SAMPLES
A3.1 Nature of samples
A4 PRODUCT EXPOSURE
A4.1 In-the-product exposure
A4.2 Immersion exposure
A5 SAMPLE TRANSPORT AND STORAGE
A6 SAMPLE WASHING
A7 SPECIAL PRODUCTS
A7.1 General
A7.2 Elastomeric products
A7.3 Greases
A7.4 Coatings
A7.5 Sealing compounds
A7.6 Jointing compounds
A7.7 Solder fluxes
A7.8 Anaerobic adhesives
A8 CEMENTITIOUS PRODUCTS
A9 METAL ALLOYS
APPENDIX B - SCALING FACTORS-DERIVATION AND APPLICATION
B1 INTRODUCTION
B2 CALCULATION OF SCALING FACTORS
B3 EXAMPLES OF SCALING FACTOR CALCULATIONS
Example 1: Sealing gasket (immersion exposure)
Example 2 Sluice valve (in-the-product exposure)
Example 3 Domestic plumbing systems
Example 4: Growth of micro-organisms test
APPENDIX C - TEST METHOD-TASTE OF WATER EXTRACT
C1 SCOPE
C2 INTRODUCTION
C3 PRINCIPLE
C4 TEST PREMISES
C5 REAGENTS
C5.1 Test waters
C5.2 Sodium hypochlorite solution
C5.3 Distilled water
C6 APPARATUS
C6.1 Test containers
C6.2 Dilution beakers
C6.3 Water bath and incubator
C6.4 Tasting glass
C6.5 Glass-encapsulated weights
C7 SELECTION OF TASTE PANELLISTS
C7.1 Taste panel requirements
C7.2 Initial sensitivity test
C7.3 Regular assessment
C7.4 Personal logs
C8 CROSS-CONTAMINATION OF SAMPLES
C9 TEST PROCEDURE
C9.1 Extraction
C9.2 Taste test dilutions
C9.3 Tasting procedure
C9.4 Extraction procedure using chlorinated water
C10 EXPRESSION OF RESULTS
C10.1 Validation
C10.2 Expression of results
C11 TEST REPORT
C12 LIST OF TASTES
APPENDIX D - TEST METHOD-APPEARANCE OF WATER EXTRACT
D1 SCOPE
D2 PRINCIPLE
D3 REAGENTS
D3.1 Test water
D3.2 Colour matching solutions
D3.3 Formazine solutions
D4 APPARATUS
D4.1 Laboratory ware
D4.2 Test containers
D4.3 Colour measurement apparatus
D4.4 Incubator
D4.5 Turbidity measurement apparatus
D4.6 Glass-encapsulated weights
D5 SAMPLES
D6 TEST PROCEDURE
D6.1 General
D6.2 Further extracts
D7 MEASUREMENT OF COLOUR AND TURBIDITY
D8 CALCULATIONS
D9 TEST REPORT
APPENDIX E - TEST METHOD-GROWTH OF AQUATIC MICRO-ORGANISMS
E1 SCOPE
E2 INTRODUCTION
E3 PRINCIPLE
E4 TEST PREMISES
E5 SAFETY
E6 REAGENTS
E6.1 General
E6.2 Inoculum water
E6.3 Test water
E7 APPARATUS
E7.1 Test containers
E7.2 Dissolved oxygen meter
E7.3 Incubator/chamber
E7.4 Glass-encapsulated weights
E8 SAMPLES
E8.1 General requirements
E8.2 Reference materials
E9 TEST PROCEDURES
E9.1 Preparation of the test system
E9.2 Incubation
E9.3 Assessment of microbial growth
E9.4 Measurement of dissolved oxygen for lubricants and lubricated materials
E10 EXPRESSION OF RESULTS
E10.1 Calculation of results
E10.2 Validation of results
E10.3 Precision
E11 APPLICATION OF SCALING FACTOR
E12 TEST REPORT
APPENDIX F - TEST METHOD-CYTOTOXIC ACTIVITY OF WATER EXTRACT
F1 SCOPE
F2 PRINCIPLE
F2.1 General
F2.2 Qualitative determination of cytotoxicity by microscopy
F2.3 Quantitative determination of cytotoxicity by endpoint assay
F3 TEST PREMISES
F4 REAGENTS
F4.1 Test water
F4.2 Distilled water (for the preparation of media)
F4.3 Media
F4.4 Cell line
F5 APPARATUS
F5.1 Tissue-culture ware
F5.2 Haemocytometer counting chamber
F5.3 Test containers
F5.4 Incubators
F5.5 Freezer
F5.6 Glass-encapsulated weights
F5.7 Plate reader
F6 TEST SAMPLES
F7 TEST PROCEDURE
F7.1 Introduction
F7.2 Growth and maintenance of the cell line
F7.3 Preparation and enumeration of the cell suspension
F7.4 Extraction procedure
F7.5 Growth procedure
F7.6 Qualitative microscopic examination
F7.7 Quantitation of cell death via an endpoint assay (e.g. MTT assay)
F7.8 Expression of results
F8 TEST REPORT
APPENDIX G - TEST METHOD-MUTAGENIC ACTIVITY OF WATER EXTRACT
G1 SCOPE
G2 PRINCIPLE
G3 TEST PREMISES
G4 REAGENTS
G4.1 Test water
G4.2 Distilled water (for preparation of media)
G4.3 Control mutagens
G4.4 Medium
G4.5 Bacteria
G5 APPARATUS
G5.1 Bacteria-culture ware
G5.2 Test containers
0 ERROR !!!
G5.3 Incubators
G5.4 Glass-encapsulated weights
G6 TEST SAMPLES
G7 TEST PROCEDURE
G7.1 Introduction
G7.2 Extraction procedure
G7.3 Modified Ames test
G7.4 Controls
G7.5 Interpretation of results
G8 TEST REPORT
APPENDIX H - TEST METHOD-EXTRACTION OF METALS
H1 SCOPE
H2 LIMIT OF DETECTION AND SENSITIVITY
H3 PRINCIPLE
H4 REAGENTS
H4.1 Test water
H4.2 Nitric acid, p20 1.42 g/mL
H4.3 Nitric acid, 10% by volume
H5 APPARATUS
H5.1 Cleaning
H5.2 Test containers
H5.3 Bottles
H5.4 Incubator
H5.5 Glass-encapsulated weights
H6 TEST SAMPLES
H6.1 General requirements
H6.2 Number of tests
H7 TEST PROCEDURE
H7.1 Extraction
H7.2 Determination of extracted metals
H8 EXPRESSION OF RESULTS
H9 TEST REPORT
APPENDIX I - TEST METHOD-EXTRACTION PROCEDURES FOR END-OF-LINE FITTINGS
I1 SCOPE
I2 PRINCIPLE
I3 APPARATUS
I3.1 Test rig (for test procedure I6.3)
I3.2 Measuring vessels
I4 REAGENTS (for test procedure I6.3)
I4.1 Test water
I4.2 Methanol
I5 TEST FITTINGS (for test procedure I6.3)
I6 TEST PROCEDURE
I6.1 Test procedure for extracts for Appendices C and D
I6.2 Test procedure for extracts for Appendix F and G
I6.3 Test procedure for extracts for Appendix H
I7 EXPRESSION OF RESULTS
I8 TEST REPORT
APPENDIX J - HIGH TEMPERATURE TESTS
J1 SCOPE
J2 PRINCIPLE
J3 APPARATUS
J3.1 Water bath or incubator
J4 SAMPLES
J5 TEST PROCEDURE
J5.1 Extraction temperature
J5.2 Extraction procedure
J5.3 Testing
J6 EXPRESSION OF RESULTS
J7 TEST REPORT
APPENDIX K - TEST METHOD-SAMPLE EXTRACTION PROCEDURE FOR USE WITH WATER-HEATING SYSTEMS
K1 SCOPE
K2 PRINCIPLE
K3 REAGENTS
K3.1 Test water
K4 TEST PROCEDURE
K4.1 Installation
K4.2 Test method
K5 EXPRESSION OF RESULTS
K6 TEST REPORT
APPENDIX L - PRODUCT SUBMISSION INFORMATION
L1 GENERAL
L2 GENERAL INFORMATION
L3 APPLIED MATERIALS
L4 SIMULATED SAMPLES
L5 SCALING FACTORS
L6 OTHER INFORMATION
L7 IDENTIFICATION
APPENDIX M - SIMULATED SAMPLES
M1 SCOPE
M2 GENERAL
M3 TYPICAL EXAMPLES OF SIMULATED SAMPLES
M4 SPECIAL ISSUES
M5 COMPONENT DOCUMENTATION
M6 ACCEPTANCE
APPENDIX N - TEST REPORT
N1 GENERAL
N2 TEST REPORT INFORMATION
N3 GENERAL INFORMATION
N4 SPECIFIC INFORMATION
N4.1 Appendix C (taste)
N4.2 Appendix D (appearance)
N4.3 Appendix E (growth of aquatic micro-organisms)
N4.4 Appendix F (cytotoxic activity)
N4.5 Appendix G (mutagenic activity)
N4.6 Appendix H (extraction of metals)
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References
Selection of containers and preservation of water samples for microbiological analysis
Plumbing and drainage - Part 4: Heated water services
Related Information
Building Code Compliance Document G12
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
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Citation context:Revoked 01/11/2023
Building Code Compliance Document E2
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Citation context:Similar Standards
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AS/NZS 3497:1998
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AS/NZS 4020:2018
Testing of products for use in contact with drinking water -
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Testing of products for use in contact with drinking water Amendment No. 1 Revised text amendment
AS/NZS 4020:2005 TESTING OF PRODUCTS FOR USE IN CONTACT WITH DRINKING WATER
PREFACE
CONTENTS
FOREWORD
1 SCOPE
2 REFERENCED DOCUMENTS
3 DEFINITIONS
3.1 Anaerobic adhesive
3.2 Colour (true colour)
3.3 Composite product
3.4 Cytotoxic
3.5 Drinking water
3.6 End-of-line fitting
3.7 Extract (leachate)
3.8 Extractant water
3.9 Maximum holding water temperature
3.10 Mutagenic
3.11 Organoleptic
3.12 Product
3.13 Sample
3.14 Scaling factor
3.15 Taste panellist
3.16 Test water
3.17 Threshold dilution
3.18 Turbidity
3.19 Water fitting
4 TEST SAMPLES
4.1 Selection and preparation of samples
4.2 Range of product sizes
4.3 Product exposure
5 SCALING FACTORS
5.1 General
5.2 Determination of scaling factors
5.3 Application of scaling factors (see Paragraph B3 Example 1)
5.4 Restrictions on the use of scaling factors
6 TEST REQUIREMENTS
6.1 General
6.2 Taste of water extract
6.3 Appearance of water extract
6.4 Growth of aquatic micro-organisms
6.5 Cytotoxic activity of water extract
6.6 Mutagenic activity of water extract
6.7 Extraction of metals
6.7.1 Products in general
6.7.2 End-of-line fittings
7 HOT WATER TESTS
APPENDIX A - SAMPLE PREPARATION
A1 SCOPE
A2 APPARATUS
A2.1 Sample storage bags
A2.2 Glass plates
A2.3 Test containers
A2.4 Temperature-measuring device
A2.5 Relative humidity-measuring device
A2.6 Glass-encapsulated weights
A3 SAMPLES
A3.1 Nature of samples
A4 PRODUCT EXPOSURE
A4.1 In-the-product exposure
A4.2 Immersion exposure
A5 SAMPLE TRANSPORT AND STORAGE
A6 SAMPLE WASHING
A7 SPECIAL PRODUCTS
A7.1 General
A7.2 Elastomeric products
A7.3 Greases
A7.4 Coatings
A7.5 Sealing compounds
A7.6 Jointing compounds
A7.7 Solder fluxes
A7.8 Anaerobic adhesives
A8 CEMENTITIOUS PRODUCTS
A9 METAL ALLOYS
APPENDIX B - SCALING FACTORS-DERIVATION AND APPLICATION
B1 INTRODUCTION
B2 CALCULATION OF SCALING FACTORS
B3 EXAMPLES OF SCALING FACTOR CALCULATIONS
Example 1: Sealing gasket (immersion exposure)
Example 2 Sluice valve (in-the-product exposure)
Example 3 Domestic plumbing systems
Example 4: Growth of micro-organisms test
APPENDIX C - TEST METHOD-TASTE OF WATER EXTRACT
C1 SCOPE
C2 INTRODUCTION
C3 PRINCIPLE
C4 TEST PREMISES
C5 REAGENTS
C5.1 Test waters
C5.2 Sodium hypochlorite solution
C5.3 Distilled water
C6 APPARATUS
C6.1 Test containers
C6.2 Dilution beakers
C6.3 Water bath and incubator
C6.4 Tasting glass
C6.5 Glass-encapsulated weights
C7 SELECTION OF TASTE PANELLISTS
C7.1 Taste panel requirements
C7.2 Initial sensitivity test
C7.3 Regular assessment
C7.4 Personal logs
C8 CROSS-CONTAMINATION OF SAMPLES
C9 TEST PROCEDURE
C9.1 Extraction
C9.2 Taste test dilutions
C9.3 Tasting procedure
C9.4 Extraction procedure using chlorinated water
C10 EXPRESSION OF RESULTS
C10.1 Validation
C10.2 Expression of results
C11 TEST REPORT
C12 LIST OF TASTES
APPENDIX D - TEST METHOD-APPEARANCE OF WATER EXTRACT
D1 SCOPE
D2 PRINCIPLE
D3 REAGENTS
D3.1 Test water
D3.2 Colour matching solutions
D3.3 Formazine solutions
D4 APPARATUS
D4.1 Laboratory ware
D4.2 Test containers
D4.3 Colour measurement apparatus
D4.4 Incubator
D4.5 Turbidity measurement apparatus
D4.6 Glass-encapsulated weights
D5 SAMPLES
D6 TEST PROCEDURE
D6.1 General
D6.2 Further extracts
D7 MEASUREMENT OF COLOUR AND TURBIDITY
D8 CALCULATIONS
D9 TEST REPORT
APPENDIX E - TEST METHOD-GROWTH OF AQUATIC MICRO-ORGANISMS
E1 SCOPE
E2 INTRODUCTION
E3 PRINCIPLE
E4 TEST PREMISES
E5 SAFETY
E6 REAGENTS
E6.1 General
E6.2 Inoculum water
E6.3 Test water
E7 APPARATUS
E7.1 Test containers
E7.2 Dissolved oxygen meter
E7.3 Incubator/chamber
E7.4 Glass-encapsulated weights
E8 SAMPLES
E8.1 General requirements
E8.2 Reference materials
E9 TEST PROCEDURES
E9.1 Preparation of the test system
E9.2 Incubation
E9.3 Assessment of microbial growth
E9.4 Measurement of dissolved oxygen for lubricants and lubricated materials
E10 EXPRESSION OF RESULTS
E10.1 Calculation of results
E10.2 Validation of results
E10.3 Precision
E11 APPLICATION OF SCALING FACTOR
E12 TEST REPORT
APPENDIX F - TEST METHOD-CYTOTOXIC ACTIVITY OF WATER EXTRACT
F1 SCOPE
F2 PRINCIPLE
F2.1 General
F2.2 Qualitative determination of cytotoxicity by microscopy
F2.3 Quantitative determination of cytotoxicity by endpoint assay
F3 TEST PREMISES
F4 REAGENTS
F4.1 Test water
F4.2 Distilled water (for the preparation of media)
F4.3 Media
F4.4 Cell line
F5 APPARATUS
F5.1 Tissue-culture ware
F5.2 Haemocytometer counting chamber
F5.3 Test containers
F5.4 Incubators
F5.5 Freezer
F5.6 Glass-encapsulated weights
F5.7 Plate reader
F6 TEST SAMPLES
F7 TEST PROCEDURE
F7.1 Introduction
F7.2 Growth and maintenance of the cell line
F7.3 Preparation and enumeration of the cell suspension
F7.4 Extraction procedure
F7.5 Growth procedure
F7.6 Qualitative microscopic examination
F7.7 Quantitation of cell death via an endpoint assay (e.g. MTT assay)
F7.8 Expression of results
F8 TEST REPORT
APPENDIX G - TEST METHOD-MUTAGENIC ACTIVITY OF WATER EXTRACT
G1 SCOPE
G2 PRINCIPLE
G3 TEST PREMISES
G4 REAGENTS
G4.1 Test water
G4.2 Distilled water (for preparation of media)
G4.3 Control mutagens
G4.4 Medium
G4.5 Bacteria
G5 APPARATUS
G5.1 Bacteria-culture ware
G5.2 Test containers
0 ERROR !!!
G5.3 Incubators
G5.4 Glass-encapsulated weights
G6 TEST SAMPLES
G7 TEST PROCEDURE
G7.1 Introduction
G7.2 Extraction procedure
G7.3 Modified Ames test
G7.4 Controls
G7.5 Interpretation of results
G8 TEST REPORT
APPENDIX H - TEST METHOD-EXTRACTION OF METALS
H1 SCOPE
H2 LIMIT OF DETECTION AND SENSITIVITY
H3 PRINCIPLE
H4 REAGENTS
H4.1 Test water
H4.2 Nitric acid, p20 1.42 g/mL
H4.3 Nitric acid, 10% by volume
H5 APPARATUS
H5.1 Cleaning
H5.2 Test containers
H5.3 Bottles
H5.4 Incubator
H5.5 Glass-encapsulated weights
H6 TEST SAMPLES
H6.1 General requirements
H6.2 Number of tests
H7 TEST PROCEDURE
H7.1 Extraction
H7.2 Determination of extracted metals
H8 EXPRESSION OF RESULTS
H9 TEST REPORT
APPENDIX I - TEST METHOD-EXTRACTION PROCEDURES FOR END-OF-LINE FITTINGS
I1 SCOPE
I2 PRINCIPLE
I3 APPARATUS
I3.1 Test rig (for test procedure I6.3)
I3.2 Measuring vessels
I4 REAGENTS (for test procedure I6.3)
I4.1 Test water
I4.2 Methanol
I5 TEST FITTINGS (for test procedure I6.3)
I6 TEST PROCEDURE
I6.1 Test procedure for extracts for Appendices C and D
I6.2 Test procedure for extracts for Appendix F and G
I6.3 Test procedure for extracts for Appendix H
I7 EXPRESSION OF RESULTS
I8 TEST REPORT
APPENDIX J - HIGH TEMPERATURE TESTS
J1 SCOPE
J2 PRINCIPLE
J3 APPARATUS
J3.1 Water bath or incubator
J4 SAMPLES
J5 TEST PROCEDURE
J5.1 Extraction temperature
J5.2 Extraction procedure
J5.3 Testing
J6 EXPRESSION OF RESULTS
J7 TEST REPORT
APPENDIX K - TEST METHOD-SAMPLE EXTRACTION PROCEDURE FOR USE WITH WATER-HEATING SYSTEMS
K1 SCOPE
K2 PRINCIPLE
K3 REAGENTS
K3.1 Test water
K4 TEST PROCEDURE
K4.1 Installation
K4.2 Test method
K5 EXPRESSION OF RESULTS
K6 TEST REPORT
APPENDIX L - PRODUCT SUBMISSION INFORMATION
L1 GENERAL
L2 GENERAL INFORMATION
L3 APPLIED MATERIALS
L4 SIMULATED SAMPLES
L5 SCALING FACTORS
L6 OTHER INFORMATION
L7 IDENTIFICATION
APPENDIX M - SIMULATED SAMPLES
M1 SCOPE
M2 GENERAL
M3 TYPICAL EXAMPLES OF SIMULATED SAMPLES
M4 SPECIAL ISSUES
M5 COMPONENT DOCUMENTATION
M6 ACCEPTANCE
APPENDIX N - TEST REPORT
N1 GENERAL
N2 TEST REPORT INFORMATION
N3 GENERAL INFORMATION
N4 SPECIFIC INFORMATION
N4.1 Appendix C (taste)
N4.2 Appendix D (appearance)
N4.3 Appendix E (growth of aquatic micro-organisms)
N4.4 Appendix F (cytotoxic activity)
N4.5 Appendix G (mutagenic activity)
N4.6 Appendix H (extraction of metals)
Previous versions
AS/NZS 4020:2005
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.