Sydney Water Aquatic Ecosystem Monitoring. Macroinvertebrate Monitoring Measuring the impacts of...
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Transcript of Sydney Water Aquatic Ecosystem Monitoring. Macroinvertebrate Monitoring Measuring the impacts of...
Sydney Water Aquatic
Ecosystem Monitoring
Macroinvertebrate MonitoringMeasuring the
impacts of sewage treatment plant discharges
Active Blue Mountains STPs July 1980 (11 active)
Active Blue Mountains STPs March 2002 (4 active)
Wentworth Falls STP Located on the edge of the Blue Mountains World Heritage Area
0
500
1,000
1,500
2,000
2,500
3,000
3,500
91 92 93 94 95 96 97 98 99 00
E153 DS E161 US
S TP decom m issioned
* As at 17/ 09 each year
µg
/L
Figure: Phosphorus upstream and downstream of South Katoomba sewage treatment plant
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
91 92 93 94 95 96 97 98 99 00
E153 DS E161 US
S TP decom m issioned
* As at 17/ 09 each year
mg
/L
Figure: Nitrogen upstream and downstream of South Katoomba sewage treatment plant
2
3
4
5
6
7
8
Upstream Downstream Downstream com parison stream
Probable severeorganic pollution
Probable m oderate
organic pollution
Possible m ildorganic pollution
Clean water
S TPdecom m issioned
Bio
tic i
nd
ex
(S
IGN
AL
-G)
Ecosystem Recovery Following Closure of Wentworth Falls STP
3
4
5
6
7
8
Spring1995
Autumn1996
Spring1996
Autumn1997
Spring1997
Autumn1998
Spring1998
Autumn1999
Spring1999
Autumn2000
Biot
ic in
dex
(SIG
NAL-
G in
terim
)
Upstream Downstream
Clean water
Possible mildorganic pollution
Probable moderateorganic pollution
Probable severeorganic pollution
Wentworth Falls sewage treatmentplant decommissioned
Dragonfly Nymph
Beetle
Stonefly
Midge
Caddisfly
Alien Species
Catchment Development
Impact of Urban Development Rouse Hill Area
2
3
4
5
6
7
8
Sprin
g 19
95
Autu
mn
1996
Sprin
g 19
96
Autu
mn
1997
Sprin
g 19
97
Autu
mn
1998
Sprin
g 19
98
Autu
mn
1999
Sprin
g 19
99
Autu
mn
2000
Sprin
g 20
00
Autu
mn
2001
Period
Biot
ic In
dex
(SIG
NAL-
G)
Upstream Downstream
Clean water
Possible mildorganic pollution
Probable moderateorganic pollution
Probable severeorganic pollution
Sampling of this plantwas delayed due to heavy rain - 260mm fell in October 1999.
Chlorine residualreduction commenced
August rainfall300mm plus after
relatively long dry period
Catchment Development
Photography Credits
The photographs used in this presentation are reproduced with kind permission of the copyright owners: Ian Wright and Sydney Water Corporation.