24940 version 1
Page 1 of 3
Interpret data to determine the effect of effluent discharge on the
environment
Level
5
Credits
4
Purpose
People credited with this unit standard are able to interpret data to determine
the impact of effluent discharge on: surface receiving water, groundwater,
and on soils and vegetation.
Subfield
Water Industry
Domain
Wastewater Treatment
Status
Registered
Status date
19 September 2008
Date version published
19 September 2008
Planned review date
31 December 2013
Entry information
Open.
Replacement information
This unit standard replaced unit standard 19190.
Accreditation
Evaluation of documentation and visit by NZQA, industry
and teaching professional in the same field from another
provider.
Standard setting body (SSB)
Primary Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0179
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
Definitions
Effluent – treated wastewater which is the used water from domestic, commercial, and
industrial activities, which contains contaminants such as nutrients, organic matter, and
micro-organisms; and excludes stormwater.
Surface receiving waters – rivers, streams, lakes, marine environment.
The environment – surface water, groundwater, soils, and vegetation.
 New Zealand Qualifications Authority 2016
24940 version 1
Page 2 of 3
Elements and performance criteria
Element 1
Interpret data to determine the impact of effluent discharge on surface receiving water.
Performance criteria
1.1
Data related to dissolved oxygen deficit in surface receiving waters is
interpreted to determine the impact of effluent discharge.
Range
1.2
Data related to algal productivity and aquatic plant growth in receiving surface
waters is interpreted to determine the impact of effluent discharge.
Range
1.3
dissolved oxygen levels, dilution and flow rates, oxygen sensitivity.
species – diversity, abundance.
Data related to micro-organism reduction in surface receiving waters is
interpreted to determine the impact of effluent discharge.
Range
indicator organism levels.
Element 2
Interpret data to determine the impact of effluent discharge on groundwater.
Performance criteria
2.1
Data related to groundwater is interpreted to determine the impact of effluent
discharge.
Range
one of – changes in nutrient levels, microbiological quality, flow
rate and distance.
Element 3
Interpret data to determine the impact of effluent discharge on soils and vegetation.
Performance criteria
3.1
Data related to soils is interpreted to determine the impact of effluent discharge.
Range
3.2
data related to – contaminant accumulation, microbiological
clogging, physical clogging, chemical clogging.
Data related to growth rate and type of vegetation is interpreted to determine
the impact of effluent discharge.
Range
contaminant accumulation, growth rate, species diversity and
abundance.
 New Zealand Qualifications Authority 2016
24940 version 1
Page 3 of 3
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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.
 New Zealand Qualifications Authority 2016