8.2.25 Water resource catchments overlay code
8.2.25.1 Application
(1)
This code applies to assessing development in the Water resource catchments
overlay, if:
(a) assessable development where this code is an applicable code identified in the
assessment criteria column of a table of assessment for an overlay (section 5.10);
or
(b) impact assessable development.
(2)
Land in the Water resource catchment overlay is identified on the Water resource
catchments overlay map and included in the Water resource catchment sub-category.
(3)
When using this code, reference should be made to section 1.5 and section 5.3.3.
Note—For any other assessable development within the Water resource catchments overlay refer to the Seqwater
development guidelines – Development guidelines for water quality management in drinking water catchments.
Note—The content of this code applicable to a dwelling house is derived from the Seqwater development guidelines –
Development guidelines for water quality management in drinking water catchments. It this is updated, the code defaults to
this document. Where development is for any use other than a dwelling house, this code refers to the Seqwater development
guidelines – Development guidelines for water quality management in drinking water catchments. If this is updated the code
defaults to this document.
8.2.25.2 Purpose
(1)
The purpose of the Water resource catchments overlay code is to:
(a) Implement the policy direction in the Strategic framework in particular:
(i)
Theme 3: Brisbane’s clean and green leading environmental performance
and Element 3.1– Brisbane’s environmental values;
(ii)
Theme 4: Brisbane’s highly effective transport and infrastructure
networks and Element 4.2 – Brisbane’s other infrastructure networks;
(iii)
Theme 5: Brisbane’s CityShape and Element 5.6 – Brisbane’s Greenspace
System.
(b) Provide for the assessment of the suitability of development in the Water
resource catchments overlay.
(2)
The purpose of the code will be achieved through the following overall outcomes:
(a) Development is situated in locations that do not adversely impact on water quality
in the catchment.
(b) Development maintains and contributes to improving water quality in that
catchment.
(c) Development is designed and laid out in a manner consistent with site evaluations
which determine the most suitable location for wastewater treatment and
disposal.
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(d) Development including any associated ancillary activities or operations, is
managed in a manner that contributes to maintaining and improving water quality
in that catchment.
(e) Development in the catchments is undertaken in such a manner as to ensure no
cumulative impact on water quality.
8.2.25.3 Assessment criteria
The following table identifies the assessment criteria for assessable development.
Table 8.2.25.3—Criteria for assessable development
Performance outcomes
Acceptable outcomes
Section A—If for a material change of use for a dwelling house
PO1
AO1
Development ensures that a site analysis is
undertaken to demonstrate that the
development and activity is appropriate for
the location.
Development is demonstrated to be
acceptable by a site analysis that is
prepared in accordance with the Seqwater
Development guidelines for water quality
management in drinking water catchments,
Table 1, measure 1.1.
PO2
AO2
Development is appropriately located with
horizontal separation distances to reduce
potential adverse impacts on water quality,
being appropriate for the location to
maintain and improve water quality in the
catchment.
Development is carried out on land which:
(a) accords with the horizontal separation
distances in Table 3 in Development
guidelines for water quality
management in drinking water
catchments;
(b) is otherwise appropriately located, if
there is no suitable alternative.
PO3
AO3
Development provides for wastewater
treatment and effluent disposal in a location
determined in accordance with a site
evaluation.
Development accords with a site evaluation
which addresses:
(a) depth to bedrock and seasonal
groundwater;
(b) nature of site water supply;
(c) local climatic conditions;
(d) site stability;
(e) soil profile in accordance with the
relevant Australian Standard;
(f) soil characteristics, particularly nutrient
absorption capacity, dispersion
potential, permeability, depth and
structure.
Part 8 - Overlay Codes (Water Resource Catchments)
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Note—The Seqwater development guidelines provide
guidance on relevant matter’s for a site evaluation.
PO4
AO4
Development provides a wastewater
treatment system which is certified under
the Plumbing and Drainage Act 2002.
Development provides a wastewater
treatment system which includes:
(a) a disinfection process to achieve the
required microbiological quality and
processes including chlorination, UV
radiation, oxidation or membrane
processes as per the Queensland
Plumbing and Wastewater Code 2006;
(b) an emergency storage capacity of
1,000L and adequate buffering for
shock loading and down time.
PO5
AO5
Development provides a wastewater
treatment system which produces:
Development provides:
(a) a minimum secondary treated effluent
(90th percentile); or
(b) where deemed appropriate, a higher
level of treatment, to preserve water
quality and minimise human health risks.
(a) secondary treated effluent system
which is characterised by:
(i)
biochemical oxygen demand less
than or equal to 20mg/L with no
sample over 30mg/L;
(ii)
total suspended solids less than
30mg/L – with no sample over
45mg/L;
(iii)
faecal coliforms less than
200cfu/100mL with no sample over
1000cfu/L; or
Note—Refer to the Queensland Plumbing and Wastewater
Code 2006.
(b) a composting or other alternative
waste treatment system which ensures
that the treated material does not
cause an adverse impact on water
quality through material allowing
nutrients to enter surface waters or
groundwater systems, including where
the treated material is used for
fertiliser or other soil improvement or
otherwise disposed of.
PO6
AO6.1
Development locates the effluent disposal
Development locates the effluent disposal
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application area to achieve no additional
effect on water quality.
application area to:
(a) comply with the Queensland Plumbing
and Wastewater Code 2006;
(b) protect public health;
(c) protect surface water and groundwater
quality, including diversion mounds up
slope of the effluent disposal
application area, so that these waters
do not flow onto or across effluent
disposal application area.
AO6.2
Development locates the effluent disposal
application area, inclusive of any reserve
area:
(a) to achieve the horizontal separation
distances in the Development
guidelines for water quality
management in drinking water
catchments;
(b) on land with a low capability of
becoming unstable or collapsing during
construction or operation;
(c) on land that is not susceptible to
salinisation;
(d) where the area has a good aspect for
enhanced exposure to sunlight and
prevailing breezes;
(e) on land that is free of or not susceptible
to depressions where run-off may pond
on the effluent disposal application
area;
(f) on land with soils with a permeability
between 0.06m/day and 3.0m/day;
(g) on land that does not contain rock
outcrops, faults, areas underlain by
fractured rock, coarse alluvium or
similar which may short circuit
wastewater to groundwater;
(h) on land where the base of the land
application field is at least 2m above
the seasonal high watertable or
bedrock, whichever is the lesser vertical
distance below the base of the effluent
disposal application area;
Part 8 - Overlay Codes (Water Resource Catchments)
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(i) on land which is not in an overland flow
path or on an area that performs a
groundwater recharge or discharge
function.
PO7
AO7.1
Development provides for the monitoring
and maintenance of treatment and disposal
systems to sustain the quality of effluent and
achieve no additional effect on water quality.
Development provides for monitoring of
the effluent disposal system to be
undertaken from the time of
commissioning to determine the quality of
the wastewater produced from the effluent
treatment system.
AO7.2
Development provides for the monitoring
of soils, vegetation and groundwater in the
effluent disposal application area to be
undertaken every 3 years to establish that
the treated effluent is not percolating into
groundwater.
AO7.3
Development provides for the sampling and
testing to be undertaken through an
accredited laboratory.
AO7.4
Development provides for:
(a) continuous monitoring by the owner of
the effluent disposal system to be
undertaken, for any water on the
surface of the effluent disposal
application area, down slope
resurfacing, change in plant growth on
or around the effluent disposal
application area and any other sign of a
problem;
(b) any problem detected during
continuous monitoring to be addressed
through maintenance.
Section B—If for a material change of use other than for a dwelling house
PO8
AO8
Development is to comply with the specific
outcomes of the Development guidelines for
water quality management in drinking water
catchments as if the specific outcomes are
performance outcomes.
Development is to comply with the
measures in the Development guidelines for
water quality management in drinking water
catchments as if the measures are
acceptable outcomes.
Part 8 - Overlay Codes (Water Resource Catchments)
Effective 30 June 2014
Part 8 - Overlay Codes (Water Resource Catchments)
Effective 30 June 2014