Eurobodalla Integrated Water Cycle Management Strategy

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Eurobodalla Integrated Water Cycle Management Strategy
Improve current Sewage Treatment System
This option involves upgrading the Kianga STP to address the long term odour impacts and
to meet operational compliance. Upgrading the plant would include the medium to long term
management measures identified above, and pump station improvements.
Increase Treatment Capacity
Kianga STP requires upgrading to meet future demands. This could be achieved by
constructing a parallel treatment facility or by optimising the existing treatment train.
Stormwater Quality and Quantity Control measures
Stormwater can be collected and stored, and then treated for release at a controlled rate.
The temporary storage of flood waters will have the effect of attenuating the peak flow rate
of discharge downstream which should reduce the size of drainage works required
downstream. It can substantially reduce the release of nutrients and pollutants to the
catchment. If sufficient open space is available, retaining and treating stormwater can
provide a cost effective means of upgrading stormwater drainage capacities with significant
environmental benefits.
Stormwater Reuse
Stormwater can be collected and stored, and then treated to a suitable level for a variety of
uses. Stormwater can be collected through individual rainwater tanks or through detention
basins. The temporary storage and reuse of flood waters will have the effect of attenuating
the peak flow rate of discharge downstream which should reduce the size of drainage
works required downstream. If sufficient open space is available, stormwater retention can
provide a cost effective means of upgrading stormwater drainage capacities, and reduce
pressure on treated water supplies and waterways. Rainwater tanks can supply many
indoor and outdoor domestic uses, and detention basins can be used for open space
irrigation or form part of the regional scheme.
Table 9-36 Social and Environmental Aspects of the Medium to Long Term
Opportunities for Dalmeny, Kianga and Narooma
Opportunity Social Environmental
Improve current sewage system
management
Stormwater quality and quantity
control measures
Reduced potential for odour
complaints.
Improved efficiency of existing
assets
Will meet future demand loads
Reduces stormwater impacts
and flooding.
Cost effective means of
upgrading stormwater
capacities.
Help protect oyster industry with
improved run-off entering local
waterways.
Improved public health
outcomes
Lessened risk of overflow.
Limited footprint of construction.
Controls pollutants entering the
environment.
Improves quality of local
waterways
Reduces erosion from increased
run-off.
Allows for future reuse
opportunities.