NZS 5826:2010
Pool water quality
NZS 5826 addresses the essential aspects of the operation and maintenance of pools with a focus on pool water quality criteria including methods of water treatment to ensure the risk to public health is minimised. NZS 5826 does not cover the maintenance of heating, mechanical, or electrical equipment used by pools. The design of swimming pools is covered by NZS 4441. This Standard covers all treated freshwater and seawater swimming pools, spa pools, and geothermal public and private pools, during use.
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COMMITTEE REPRESENTATION
ACKNOWLEDGEMENT
COPYRIGHT
CONTENTS
REFERENCED DOCUMENTS
LATEST REVISIONS
REVIEW OF STANDARDS
FOREWORD
OUTCOME STATEMENT
PART 1 – POOL WATER QUALITY
1.1 Scope, objectives, and interpretation
1.2 Definitions and glossary of terms
1.3 Water treatment
1.4 Water quality criteria and testing frequencies
1.5 Additional requirements for spa pools and hot tubs
1.6 Specific requirements for geothermal pools
PART 2 – POOL RISK MANAGEMENT PLAN GUIDES
2.1 Introduction
2.2 Risk management guide – General monitoring
2.3 Risk management guide – Staff training
2.4 Risk management guide – Media filtration without flocculation
2.5 Risk management guide – Media filtration with flocculation
2.6 Risk management guide – Pre-coat filtration
2.7 Risk management guide – Chlorine disinfection
2.8 Risk management guide – Chlorine dioxide disinfection
2.9 Risk management guide – Ozone disinfection
2.10 Risk management guide – Disinfection by ultraviolet irradiation
2.11 Risk management guide – pH adjustment
2.12 Risk management guide – Pump operation
2.13 Risk management guide – Alternative treatment systems
APPENDIX
A – HEALTH CONSIDERATIONS
B – COAGULATION AND FLOCCULATION
C – CHEMICAL PRINCIPLES FOR CHLORINATED POOLS
D – ALTERNATIVES TO CHLORINE FOR POOL DISINFECTION
E – CHEMICAL DOSING PROCEDURES
F – SAFE HANDLING, STORAGE, AND MANAGEMENT OFCHEMICALS
G – CHECKLIST OF DUTIES AND PROCEDURES FOR SAFEOPERATION OF SWIMMING POOLS
H – WATER QUALITY TEST PROCEDURES, TEST KITS, ANDEQUIPMENT
J – TROUBLESHOOTING
K – ESTIMATING RISK
Table
1 – Chemical water quality criteria – Swimming pools and spa pools
2 – Minimum frequency of chemical testing for swimming pools
3 – Minimum frequency of chemical testing for spa pools
4 – Microbiological water quality criteria
5 – Risk information – Incorrect data used for pool management
6 – Event indicators and contingency actions – Quality of monitoring
7 – Pool data monitoring data
8 – Risk information – Inadequate knowledge
9 – Inadequate training consequences
10 – Risk information – Particulate pollution not removed without flocculation
11 – Event indicators and contingency actions
12 – Media filtration without flocculation assessment
13 – Risk information – Particulate pollution not removed with flocculation
14 – Event indicators and contingency actions
15 – Filtration with flocculation assessment
16 – Risk information – Particulate pollution not removed with pre-coat filtration
17 – Event indicators and contingency actions
18 – Pre-coat media filtration assessment
19 – Risk information – Microorganisms introduced during pool use
20 – Risk information – Insufficient free available chlorine (inadequate disinfection)
21 – Risk information – Too much free available chlorine
22 – Risk information – Excessive formation of chloramines/disinfection by-products
23 – Event indicators and contingency actions – Lower FAC
24 – Event indicators and contingency actions – Higher FAC
25 – Chlorination assessment
26 – Risk information – Chlorine dioxide (CIO2) concentration too low
27 – Risk information – Chlorine dioxide (CIO2) concentration too high
28 – Risk information – Excessive formation of by-products
29 – Risk information – ClO2 concentration low
30 – Risk information – ClO2 concentration high
31 – Risk information – High chlorate or chlorite concentrations
32 – Chlorine dioxide assessment
33 – Risk information – Low ozone level in treatment stage
34 – Event indicators and contingency actions
35 – Ozonation assessment
36 – Risk information – Low UV level
37 – Event indicators and contingency actions
38 – UV disinfection assessment
39 – Risk information – High pH level
40 – Risk information – Low pH level
41 – Risk information – Introduction of microorganisms during pool use
42 – Event indicators and contingency actions – High pH
43 – Event indicators and contingency actions – Low pH
44 – pH level assessment
45 – Pump types and applications
46 – Risk information – Water flow changes or pressure surges
47 – Risk information – Incorrect chemical dosing
48 – Event indicators and contingency actions – Poor quality control
49 – Event indicators and contingency actions – Pump failure
50 – Pump performance assessment
A1 – Risk assessment for diarrhoeal incidents
A2 – Guideline contact times and dose rates to inactivate Giardia and Cryptosporidium
G1 – Sample notice for filter plant and pool details
H1 – Alkalinity x hardness products above which calcium carbonatescaling and precipitation can occur
H2 – Typical changes in pH and alkalinity expected when chemicals are added
J1 – Troubleshooting
K1 – Risk likelihood ranking scale
K2 – Consequence criteria scale
K3 – Example of a probability criteria matrix
K4 – Example of a risk ranking matrix
K5 – Example of a probability criteria matrix using risk ranking
Figure
1 – Impact of pH value on disinfection capability
H1 – Watergram for determining the chemical balance of water
H2 – Watergram for the example calculation in H9.4
H3 – An example of a swimming pool water test sheet
K1 – Risk management process
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References
The storage and handling of liquefied chlorine gas
Water microbiology - General information and procedures
Water microbiology - Method 13: Pseudomonas aeruginosa - Membrane filtration method
Water microbiology - Method 15: Examination for Vibrio cholerae
Water microbiology - Method 16: Bactericidal efficiency of water disinfecting tablets
Water microbiology - Method 17.1: Spores of sulfite-reducing anaerobes (clostridia) including Clostridium perfringens - Membrane filtration method
Water microbiology - Method 17.2: Spores of sulfite-reducing anaerobes (clostridia) including Clostridium perfringens - Estimation of most probable number (MPN) using the multiple tube dilution technique
Water microbiology - Method 18: Aeromonas by membrane filtration including selected speciation
Water microbiology - Method 19: Examination for thermophilic Campylobacter spp. - Membrane filtration
Water microbiology - Method 20: Examination for coagulase positive staphylococci, including Staphylococcus aureus, by membrane filtration
Water microbiology - Method 22: Packaged water - Coliform bacteria and Escherichia coli - Membrane filtration method
Water microbiology - Method 3: Heterotrophic colony count methods - Method 3.1: Pour plate method using yeast extract agar
Water microbiology - Method 3: Heterotrophic colony count methods - Method 3.2: Plate count of water containing biocides
Water microbiology - Method 5: Coliforms - Membrane filtration method
Water microbiology - Method 6: Coliforms, Escherichia coli and thermotolerant coliforms - Determination of most probable number (MPN)
Water microbiology - Method 7: Escherichia coli and thermotolerant Coliforms - Membrane filtration method
Water microbiology - Method 9: Enterococci - Membrane filtration method
Swimming pool design Standard
Related Information
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AS/NZS 1838:1994
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AS/NZS 1839:1994
Swimming pools - Premoulded fibre-reinforced plastics - Installation
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AS/NZS 2031:2001
Selection of containers and preservation of water samples for microbiological analysis
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AS/NZS 2635:2008
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COMMITTEE REPRESENTATION
ACKNOWLEDGEMENT
COPYRIGHT
CONTENTS
REFERENCED DOCUMENTS
LATEST REVISIONS
REVIEW OF STANDARDS
FOREWORD
OUTCOME STATEMENT
PART 1 – POOL WATER QUALITY
1.1 Scope, objectives, and interpretation
1.2 Definitions and glossary of terms
1.3 Water treatment
1.4 Water quality criteria and testing frequencies
1.5 Additional requirements for spa pools and hot tubs
1.6 Specific requirements for geothermal pools
PART 2 – POOL RISK MANAGEMENT PLAN GUIDES
2.1 Introduction
2.2 Risk management guide – General monitoring
2.3 Risk management guide – Staff training
2.4 Risk management guide – Media filtration without flocculation
2.5 Risk management guide – Media filtration with flocculation
2.6 Risk management guide – Pre-coat filtration
2.7 Risk management guide – Chlorine disinfection
2.8 Risk management guide – Chlorine dioxide disinfection
2.9 Risk management guide – Ozone disinfection
2.10 Risk management guide – Disinfection by ultraviolet irradiation
2.11 Risk management guide – pH adjustment
2.12 Risk management guide – Pump operation
2.13 Risk management guide – Alternative treatment systems
APPENDIX
A – HEALTH CONSIDERATIONS
B – COAGULATION AND FLOCCULATION
C – CHEMICAL PRINCIPLES FOR CHLORINATED POOLS
D – ALTERNATIVES TO CHLORINE FOR POOL DISINFECTION
E – CHEMICAL DOSING PROCEDURES
F – SAFE HANDLING, STORAGE, AND MANAGEMENT OFCHEMICALS
G – CHECKLIST OF DUTIES AND PROCEDURES FOR SAFEOPERATION OF SWIMMING POOLS
H – WATER QUALITY TEST PROCEDURES, TEST KITS, ANDEQUIPMENT
J – TROUBLESHOOTING
K – ESTIMATING RISK
Table
1 – Chemical water quality criteria – Swimming pools and spa pools
2 – Minimum frequency of chemical testing for swimming pools
3 – Minimum frequency of chemical testing for spa pools
4 – Microbiological water quality criteria
5 – Risk information – Incorrect data used for pool management
6 – Event indicators and contingency actions – Quality of monitoring
7 – Pool data monitoring data
8 – Risk information – Inadequate knowledge
9 – Inadequate training consequences
10 – Risk information – Particulate pollution not removed without flocculation
11 – Event indicators and contingency actions
12 – Media filtration without flocculation assessment
13 – Risk information – Particulate pollution not removed with flocculation
14 – Event indicators and contingency actions
15 – Filtration with flocculation assessment
16 – Risk information – Particulate pollution not removed with pre-coat filtration
17 – Event indicators and contingency actions
18 – Pre-coat media filtration assessment
19 – Risk information – Microorganisms introduced during pool use
20 – Risk information – Insufficient free available chlorine (inadequate disinfection)
21 – Risk information – Too much free available chlorine
22 – Risk information – Excessive formation of chloramines/disinfection by-products
23 – Event indicators and contingency actions – Lower FAC
24 – Event indicators and contingency actions – Higher FAC
25 – Chlorination assessment
26 – Risk information – Chlorine dioxide (CIO2) concentration too low
27 – Risk information – Chlorine dioxide (CIO2) concentration too high
28 – Risk information – Excessive formation of by-products
29 – Risk information – ClO2 concentration low
30 – Risk information – ClO2 concentration high
31 – Risk information – High chlorate or chlorite concentrations
32 – Chlorine dioxide assessment
33 – Risk information – Low ozone level in treatment stage
34 – Event indicators and contingency actions
35 – Ozonation assessment
36 – Risk information – Low UV level
37 – Event indicators and contingency actions
38 – UV disinfection assessment
39 – Risk information – High pH level
40 – Risk information – Low pH level
41 – Risk information – Introduction of microorganisms during pool use
42 – Event indicators and contingency actions – High pH
43 – Event indicators and contingency actions – Low pH
44 – pH level assessment
45 – Pump types and applications
46 – Risk information – Water flow changes or pressure surges
47 – Risk information – Incorrect chemical dosing
48 – Event indicators and contingency actions – Poor quality control
49 – Event indicators and contingency actions – Pump failure
50 – Pump performance assessment
A1 – Risk assessment for diarrhoeal incidents
A2 – Guideline contact times and dose rates to inactivate Giardia and Cryptosporidium
G1 – Sample notice for filter plant and pool details
H1 – Alkalinity x hardness products above which calcium carbonatescaling and precipitation can occur
H2 – Typical changes in pH and alkalinity expected when chemicals are added
J1 – Troubleshooting
K1 – Risk likelihood ranking scale
K2 – Consequence criteria scale
K3 – Example of a probability criteria matrix
K4 – Example of a risk ranking matrix
K5 – Example of a probability criteria matrix using risk ranking
Figure
1 – Impact of pH value on disinfection capability
H1 – Watergram for determining the chemical balance of water
H2 – Watergram for the example calculation in H9.4
H3 – An example of a swimming pool water test sheet
K1 – Risk management process
NZS 5826:2010
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.