It was done during internship with Perbadanan Putrajaya as A Mini Project (asssigned to all intern, just different topic). For me, this is the topic I'd select.

2. Introduction
Putrajaya lake and wetland are planned for recreation, fishing,
water sports and water transport.
Incidents : Occasionally happens
Upon observation, any event of pollution or drastic deterioration
of the lake/wetland condition is informed by field sampling
team.

3. ALGAE
BLOOM
SEWAGE
OVERFLOW
FISH
KILL
ALGAL
LAYER
BLACKISH
WATER
OIL
SPILL
WEED
EXCESS
HIGH
E.COLI
GREENISH
WATER
FOAMING
WATER
TURBID
WATER
ALGAE BLOOM
PROJEK TABUNG HAJI, PRESINT 3
TURBID WATER
WETLAND UE1, PRESINT 13
SEVERAL
INCIDENTS

4. Lake Valley (Presint
8) Inlet Ayer@8 Lake Valley (Pond D) UB UE3 Presint 1 Umai Inlet UN 4 Lake View East Inlet Presint 10
2010
2011
2012
2013
2014
2015
UW6,
Presint13
Alam Flora
Dumpsite, Presint 5 Presint 2
Presint 2,
Inlet
Presint 2, Outlet
1
Central
Wetland PLe1 (Umai)
Perairan
Promenade
(Presint 1)
GPT 33
(PMR)
Perairan KWP,
Presint2
2010
2011
2012
2013
2014
2015

5. UB2 GPT 24 (UB2)
IOI-UE3
V-Drain UN6-IOI Inlet Cyberjaya GPT 1
STP, Nursery Wetland,
Pr13
STP Pump Area, Presint
13
GPT Masjid Tuanku
Mizan CTP
Sandy
Beach
2010
2011
2012
2013
2014
2015
CTP, Pier 4 UN8 Presint 9 Seri Wawasan Bridge Presint 16 Presint 16, TBMF
UPM, Mini Wetland
Pond WSC Pullman
Pullman
CDS Presint 4
2010
2011
2012
2013
2014
2015

6. Lake Valley (Presint 8) Inlet Ayer@8 Lake Valley (Pond D) Upper Bisa
UE3 Presint 1 Umai Inlet UN 4
Lake View East Inlet Presint 10 UW6, Presint13 Alam Flora Dumpsite, Presint 5
Presint 2 Presint 2, Inlet Presint 2, Outlet 1 Central Wetland
PLe1 (Umai) Perairan Promenade (Presint 1) GPT 33 (PMR) Perairan KWP, Presint2
UB2 GPT 24 (UB2) IOI-UE3 V-Drain UN6-IOI
Inlet Cyberjaya GPT 1 STP, Nursery Wetland, Pr3 STP Pump Area, Presint 13
GPT Masjid Tuanku Mizan CTP CTP, Pier 4 UN8
Presint 9 Seri Wawasan Bridge Presint 16 Presint 16, TBMF
UPM, Mini Wetland Pond WSC Pullman Pullman CDS
Presint 4 Sandy Beach
Percentage of Place with Highest Incidents Occurred in PLW
7%
6%
6%
4%

7. Fish Kill
Sewage Overflow
Algae Bloom
Algal Layer
Blackish Water
Oil Spill
Weed Excess
High E. coli
Greenish Water
Foaming Water
Bad water condition
Turbid Water
water from night Market
Water Hycinth Bloom
Enormous thrash
Letospirosis
Blue Liquid
Whitish Film
Sewer line Break
High Ammonia and BOD
Unpleasant Odour
HINTS:
Inlet
Cyberjaya

8. 2010 2011 2012 2013 2014 2015 total incidents
Algae bloom 2 1 0 0 5 5 13
Fish Kill 1 2 0 2 2 0 7
Sewage Overflow 0 3 0 0 2 4 9
Algal Layer 0 0 0 0 1 1 2
Blackish Water 0 0 0 1 2 1 4
Oil Spill 0 2 0 0 5 0 7
Weed Excess 0 0 0 0 2 1 3
High E. coli 0 1 2 0 2 0 5
Air Hijau 0 0 0 0 1 0 1
Air Berbuih 0 0 1 0 1 0 2
Turbid water 0 0 0 0 0 1 1
Air dari Pasar Malam 0 0 0 0 0 1 1
Water Hyacinth bloom 0 1 0 0 0 0 1
Enormous thrash 0 0 0 0 1 0 1
Leptospirosis 0 0 0 2 0 0 2
Blue Liquid 0 0 1 0 0 0 1
Whitish film 0 1 1 0 0 0 2
Sewer line break 0 1 0 0 0 0 1
high Ammonia and BOD 0 0 1 1 0 0 2
Unpleasant Odour 0 0 0 2 0 0 2
bad water condition 0 0 0 1 0 0 1
68
Total Incidents Occur Each Year

9. Algae bloom
19%
Fish Kill
10%
Sewage
Overflow
13%
Algal Layer
3%
Blackish
Water
6%
Oil Spill
10%
Weed Excess
4%
High E. coli
7%
Air Hijau
1%
Air Berbuih
3%
Turbid water
1%
Air dari Pasar Malam
1%
Water Hyacinth bloom
1%
Enormous thrash
1%
Leptospirosis
3%
Blue Liquid
1%
Whitish film
1%
Sewer line break
1%
high Ammonia
and BOD
3%
Unpleasant
Odour
3%
bad water condition
1%
Percentage of Incidents Occurred

10. 0
5
10
15
20
25
30
2010 2011 2012 2013 2014 2015
No.ofIncidents
Years
Total Incidents/year
Generally, the trend for the incidents occur each year increases from 2010 to 2014,
while for 2015, the trend inclined as the record about incidents in 2015 are only
prepared until April. The highest number of incidents occur is in 2014 followed by
2015, 2011, 2013, 2012, and 2010.

11. Relation of IncidentsDevelopment
projects Water Sport
Leachate
Chemical BiologicalFoaming Water
Oil Spill
Sewage
Overflow
High
E. coli
Algae bloom
Algal Layer
Increase Nitrogen and Ammonia
Whitish Film
Weed Excess
Turbid Water
High BOD
Fish Kill
Residence &
Restaurants
decomposition
More nutrients

12. How development project causes many incidents?
Improper management of sewage especially from the mobile toilets for
the project workers could also leak into ground and finally into wetland
and lake. Sewage contains high nitrogen and ammonia. These nutrients
would be high in the water and promote algae bloom. Besides, sewage
also contains high E. coli, this make the Putrajaya Lake have very high E.
coli. Management and maintenance for the water need to be done
regularly and but costly.
Development project produces chemical and biological wastes
which could directly affect the water quality of lake and wetland
whether through drains or also washed away by rain into the soil
and finally into the wetland and lake. For example, cements and
dye.

13. What about water sports, residences, and restaurants?
Some water sports in Putrajaya Lake and wetland use engine including
Varsity Boat Race Programme. the engine containing oil would leak into
the water especially during the racing. Oil is a kind of pollutant that
would affect the transparency of water and also prevent oxygen from
entering water habitat. In effect, dissolved oxygen would decrease,
more aquatic organisms die, and water become turbid.
As there are more human activities in residences and restaurants,
there are more biological and chemical pollutants even from daily
activities like washing cars and painting. Improper management of
waste from Pasar Tani and Pasar Malam would also flow into lake
and wetland through the drain. Besides, pollutants might come
from improper maintenance of sewerage system of restaurants
and resorts.