NZQA registered unit standard
22105 version 3
Page 1 of 3
Title
Maintain water quality in water supply reticulation systems
Level
4
Purpose
Credits
4
People credited with this unit standard are able to: identify and
isolate water quality problems, implement responses, and
report findings; and implement hygienic measures to prevent
contamination during maintenance and construction, identify
further action required, and carry out water supply sampling.
This unit standard is for people who supervise maintenance
and operations in water reticulation, and people who work in
specialist water reticulation activities.
Classification
Water Industry > Water Reticulation
Available grade
Achieved
Explanatory notes
1
Legislation includes but is not limited to – Health Act 1956, and Public Works Act
1981.
2
Reference
Draft Guidelines for Drinking-water Quality Management for New Zealand 2005,
Second edition.
Ministry of Health Public Health Risk Management Plans 2005.
The above references are available from the Ministry of Health website,
http://www.moh.govt.nz.
3
Standards
NZS 9201.7:2007 Model general bylaws - Water supply, available from
http://www.standards.co.nz.
Drinking Water Standards for New Zealand 2005 (Revised 2008), available from
http://www.moh.govt.nz.
4
Definitions
Organisational procedures – the documented procedures for water quality reporting,
and hygienic procedures detailed in documents which may include but are not limited
to – quality assurance documents, the monitoring programme and compliance
database, and maintenance contract conditions.
Water reticulation – in this context refers to all pipe systems, pumping systems, and
components that contribute to the distribution of water.
Contamination – contamination affecting workers and/or the water supply when
people transfer from working on wastewater systems to water systems.
Sampling includes microbiological sampling.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22105 version 3
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Identify and isolate water quality problems, implement responses and report findings.
Evidence requirements
1.1
The nature of the water quality problem is determined by observation or
customer reporting.
Range
1.2
taste, colour, turbidity, odour, cloudiness (air), pressure variation,
presence of chlorine or chlorine by-product.
The cause of the problem is identified, isolated, and followed up in accordance
with organisational procedures.
Range
customer or supply originated, recent maintenance, treatment
origin, external damage to water supply.
1.3
The need for water sampling is determined, and further action required is
identified, in accordance with the nature and cause of the problem.
1.4
Findings are reported in accordance with organisational and water supplier’s
requirements.
Range
non-compliance, need for test, local issue, recent maintenance.
Outcome 2
Implement hygienic measures to prevent contamination during maintenance and
construction, identify further action required, and carry out water supply sampling.
Evidence requirements
2.1
Hygienic procedures while carrying out maintenance and construction work are
implemented to prevent contamination in accordance with organisational
procedures, and water supplier’s requirements.
2.2
Duty of care is implemented to maintain pipe system integrity in accordance
with organisational procedures.
2.3
Disinfection practices during maintenance and construction works are
implemented in accordance with organisational procedures, contract
requirements, and current legislation.
2.4
The need for further maintenance and monitoring, and additional action, is
identified in accordance with organisational procedures, and contract
requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
22105 version 3
Page 3 of 3
2.5
Water supply is sampled, and sample is tested, during maintenance and
construction work in accordance with organisational procedures, and contract
requirements.
2.6
Water supply is tested for free chlorine on-site in accordance with
manufacturer’s specifications.
Planned review date
31 December 2016
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
26 October 2005
31 December 2016
Rollover and
Revision
2
20 February 2009
31 December 2016
Rollover
3
21 July 2011
N/A
Consent and Moderation Requirements (CMR) reference
0179
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMRs). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Primary Industry Training Organisation standards@primaryito.ac.nz if
you wish to suggest changes to the content of this unit standard.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016