Environmental Compliance

Waste Facility Environmental Compliance

WASTE MANAGEMENT – ENVIRONMENTAL COMPLIANCE

 

Changes to the environmental protection legislation as a result of the Protection of the Environment Legislation Amendment Act 2011 requires all local Councils to publish groundwater, surface water, leachate and landfill gas monitoring data from each of their landfill sites from 1 July 2012.

Nambucca Council currently operates two sites adjacent to each other within the LGA being a landfill and transfer station.

 

Licensed Facility:  Nambucca Waste Management Facility

Environment Protection Licence:  No 11386 (Landfill) & No 6268 (Transfer Station)

Facilities Address:  711 Old Coast Road Nambucca Heads

Licensee's Name:  Nambucca Valley Council

Licensee's Address:  PO Box 177, Macksville NSW 2447

 

The link provided below will take you to the Office of Environment and Heritage website, where you can search for each licence by entering the licence number. Full licence details and past annual returns can be viewed online.

 

http://www.environment.nsw.gov.au/prpoeoapp/

 

 

Environment Protection Licence: 11386 (Landfill)

 

The tables below identify the environmental monitoring/testing schedule and sampling results as indicated in the Environmental Protection Licence for annual, bi-annual and quarterly sampling with the licence anniversary date being 1 March.

 

Note: If N/A is indicated it means that at the time of sampling no water or probe readings were available.

 

NNLF-1 Bore Hole (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

Temperature

oC

pH

26.04.23

126

3.49

0.028

1.640

9.58

15

4.9

3.3

15.9

6.9

07.07.23

170

0.04

0.025

1.710

0.08

0.75

0.67

1.9

17.9

6.4

07.09.23

173

1.07

0.026

1.560

0.06

0.42

0.36

1.2

14.8

6.7

 

 

 

 

 

 

 

 

 

 

 

 

NLF-2 Bore Hole (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

Tempurature

oC

pH

26.04.23

31

0.09

0.027

3.440

0.61

0.83

0.22

2.1

16

6.1

07.07.23

32

0.51

0.026

4.120

0.02

1.04

1.02

1.6

18.2

5.8

07.09.23

76

0.83

0.028

3.720

0.02

1.57

1.53

2.3

15.2

6.2

 

 

 

 

 

 

 

 

 

 

 

 

NNLF-6 Gas Monitoring (Methane Bi-Annual)

 

Date

Gatehouse

(% v/v)

Machinery Shed

(% v/v)

House @ Hi-Tec Concrete

(% v/v)

Shed@ Hi-Tec Concrete

(% v/v)

Work Shed @ Hi-Tec

Concrete (% v/v)

05.06.23

0

0

0

0

0

 

 

 

 

 

 

 

NNLF-7 Gas Monitoring (Methane Bi-Annual)

 

Date

Stage One - Cell One

(% v/v)

Stage One - Cell Two

(% v/v)

05.06.23

0

0

 

 

 

 

NNLF-8 Gas Monitoring (Methane Bi-Annual)

 

Date

Bore Hole 1

(% v/v)

Bore Hole 2

(% v/v)

Bore Hole 12

(% v/v)

Bore Hole 13

(% v/v)

05.06.23

0

0

0

0

 

 

 

 

 


NNLF-9 Surface Water (Bi-annual Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Arsenic

(mg/L)

BOD

(mg/L)

Boron

(mg/L)

Calcium

(mg/L)

Chloride

(mg/L)

Chromium (mg/L)

Conductivity

(mS/cm)

Dissolved oxygen

(mg/L)

Fluoride

(mg/L)

Iron

(mg/L)

Lead

(mg/L)

Magnesium

(mg/L)

Manganese

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Phosphorus

(mg/L)

Potassium

(mg/L)

Sodium

(mg/L)

Sulfate

(mg/L)

Temperature

oC

Total Phenolics

(mg/L)

TOC

(mg/L)

Zinc

(mg/L)

pH

07.09.23

125

1.07

<0.012

6

0.13

27

165

0.002

N/A

N/A

0.13

2.30

<0.008

14

0.90

0.17

2.53

2.29

0.05

6.4

115

50

N/A

0.001

23

0.005

7.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NNLF-12 Bore Hole (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

Temperature

oC

pH

26.04.23

74

0.03

0.035

0.455

0.46

0.98

0.52

3.1

17.3

6.9

07.07.23

118

<0.02

0.031

0.697

0.16

0.69

0.53

2.8

18.2

6.8

07.09.23

146

0.03

0.034

0.963

0.11

0.45

0.34

2.8

15.7

6.9

 

 

 

 

 

 

 

 

 

 

 

 

 

NNLF-13 Bore Hole (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

Temperature

oC

pH

26.04.23

63

0.30

0.047

2.27

0.02

0.89

0.87

13

18.3

5.9

07.07.23

62

0.28

0.037

2.26

<0.02

1.66

1.66

3.0

18

6.0

07.09.23

68

0.31

0.044

2.040

0.03

1.52

1.50

12

13.7

6.1

 

 

 

 

 

 

 

 

 

 

 

 

 

The table below identifies the environmental monitoring/testing schedule and sampling results as indicated in the Environmental Protection Licence for special frequency (1 and 2) sampling for the first rainfall event in each quarter that exceeds 30mm in 24 hours.

 

NNLF-3 Surface Water (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

Temperature

oC

Total Suspended Solids

(mg/L)

Dissolved Oxygen

(mg/L)

pH

14.03.23

2

<0.02

0.046

0.424

<0.02

0.45

0.45

1.9

9.1

10

6.2

5.1

05.06.23

2

<0.02

0.030

0.415

<0.02

0.38

0.38

1.7

9.5

<2

8.6

4.9

27.10.23

N/A N/A  N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 


NNLF-4 Surface Water (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

 

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

 

Temperature

oC

Total Suspended Solids

(mg/L)

 

Dissolved Oxygen

(mg/L)

 

 

pH

14.03.23

54

<0.02

0.055

0.369

0.03

0.84

0.81

6.6

12.4

82

8.4

7.1

05.06.23

100

0.61

0.071

0.551

0.22

2.06

1.76

8.4

10.4

31

8.8

7.3

27.10.23

122 0.07 0.088 0.784 0.19 1.23 1.04 13 11.7 34 8.4 7.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NNLF-5 Surface Water (Quarterly Sampling)

 

Date

Alkalinity

(mg/L)

Ammonia

(mg/L)

Boron

(mg/L)

 

Conductivity

(mS/cm)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Total Kjeldahl Nitrogen

(mg/L)

Potassium

(mg/L)

 

Temperature

oC

Total Suspended Solids

(mg/L)

Dissolved Oxygen

(mg/L)

pH

14.03.23

99

0.06

0.070

0.469

<0.02

1.40

1.40

10

14

77

6.9

7.2

05.06.23

115

0.76

0.078

0.576

0.26

2.37

2.02

9.2

6.2

48

8.3

7.4

27.10.23

148 0.08 0.094 0.799 0.09 1.33 1.24 13 11.0 21 8.2 7.7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NNLF-11 Surface Water (Quarterly Sampling)

 

Date

pH

Total Suspended Solids

(mg/L)

14.03.23

6.5

178

05.06.23

5.3

7

27.10.23

6.6 568

 

 

 

 

NNLF-5 Surface Water (Wetland outlet pipe during overflows up to 74mm rain)

 

 

Date

pH

Total Suspended Solids

(mg/L)

Rainfall

 

14.03.22

7.2

77

38.5mm

15.03.23

7.3

35

6.5mm

 

16.03.23

7.1

32

17mm

 

17.03.23

7.2

23

0mm

 

 

 

 

 

 

22.03.23

7.2

14

30mm

 

23.03.23

7.2

34

2mm

 

24.03.23

missed

missed

4.5mm

 

25.03.23

NA

NA

1mm

Weekend no sample

26.03.23

NA

NA

52mm

Weekend no sample – Exceeded 74mm over 5 days

27.03.23

7.1

61

2.5mm

 

 

 

 

 

 

03.04.23

7.1

29

37mm

 

04.04.23

7.2

46

10mm

 

05.04.23

7.4

17

1.5mm

 

06.04.23

7.5

14

2mm

 

 

 

 

 

 

24.04.23

7.6

<2

13.5mm

 

25.04.23

7.5

4

6mm

 

26.04.23

7.6

6

1mm

 

27.04.23

7.4

21

2mm

 

28.04.23

7.6

6

16mm

 

 

 

 

 

 

16.05.23

7.5

3

11.5mm

 

17.05.23

7.3

3

6mm

 

 

 

 

 

 

05.06.23

6.2

48

43mm

 

06.06.23

7.2

18

1.5mm

 

         
 27.10.23 7.7 21 54mm  
 28.10.23 N/A N/A 33mm Weekend no sample - Exceeded 74mm over 5 days.

 

Environment Protection Licence: 6268 (Transfer Station)

 

The table below identifies the environmental monitoring/testing schedule and sampling results as indicated in the Environmental Protection Licence for annual, bi-annual and quarterly sampling with the licence anniversary date being 18 September.

 

Note: If N/A is indicated it means that at the time of sampling no water or probe readings were available.

 

NLF-1 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

0.11

<0.012

5.8

0.05

6.7

5.1

0.73

0.15

5.4

9.9

0.033

0.8

 

 

NLF-2 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

 

NLF-3 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Standing Water Level

19.10.23

2.81

0.067

4.8

0.07

6.7

5.2

4.35

0.18

6.7

41

0.9


NLF-4 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

 

 

NLF-5 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

2.22

0.023

3.6

0.02

5.8

3.6

4.18

0.53

5.8

28

0.27

1.0

 

 

NLF-6a Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Standing Water Level

19.10.23

0.72

0.42

3.6

0.07

6.3

18

18.3

4.38

6.1

341

1.8

 

 

NLF-8 Bore Hole (Annual Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

0.16

<0.012

5.3

0.02

6.8

5.6

1.12

0.21

4.5

20

0.047

0.9

 

 

 

NLF-9 Bore Hole (Annual Sampling)

 

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Zinc

(mg/L)

Standing Water Level

19.10.23

0.69

<0.012

3.9

2.13

6.7

2.2

3.58

3.55

7.1

6.8

0.030

1.1

 

 

NLF-10 Surface Water (Quarterly Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Total Suspended Solids

(mg/L)

Zinc

(mg/L)

27.10.23

0.10

<0.012

7.0

0.20

7.2

8.5

1.24

0.07

12.1

23

27

0.072

 

 

NLF-11 Surface Water (Quarterly Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Total Suspended Solids

(mg/L)

Zinc

(mg/L)

27.10.23

0.17

<0.012

8.2

0.24

6.7

6.2

0.82

0.06

12.1

13

21

0.026


NLF-12 Surface Water (Quarterly Sampling)

 

Date

Ammonia

(mg/L)

Arsenic

(mg/L)

Dissolved Oxygen

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Temperature

oC

Total Organic Carbon

(mg/L)

Total Suspended Solids

(mg/L)

Zinc

(mg/L)

27.10.23

0.07

<0.012

8.7

0.26

7.3

13

1.38

0.08

12.6

26

57

0.011

 

 

NLF-13 Surface Water (Bi-Annual)

 

Date

Ammonia

(mg/L)

Biochemical Oxygen Demand

(mg/L)

Calcium

(mg/L)

Chloride

(mg/L)

Iron

(mg/L)

Magnesium

(mg/L)

Nitrate

(mg/L)

Ph

Potassium

(mg/L)

Sodium

(mg/L)

Sulfate

(mg/L)

Total Nitrogen

(mg/L)

Total Phosphorus

(mg/L)

Total Organic Carbon

(mg/L)


NLF-14 Gas Monitoring (Methane Bi-Annual)

 

 

Date

Gatehouse

(%v/v)

Machinery Shed

(%v/v)

House @ Hi-Tec Concrete

(%v/v)

Shed

(%v/v)

Work Shed @ Hi-Tec Concrete

(%v/v)

 

 

NLF-15 Gas Monitoring (Methane Bi-Annual)

 

Date

Eastern Side of Waste Area

(%v/v)

Western Side of Waste Area

(%v/v)

 

 

NLF-16 Gas Monitoring (Methane Bi-Annual)

 

Date

Bore Hole 1

(%v/v)

Bore Hole 2

(%v/v)

Bore Hole 3

(%v/v)

Bore Hole 4

(%v/v)

Bore Hole 5

(%v/v)

Bore Hole 6a

(%v/v)

Bore Hole 8

(%v/v)

Bore Hole 9

(%v/v)

 

 

 

The table below identifies the environmental monitoring/testing schedule and sampling results as indicated in the Environmental Protection Licence for special frequency (1) sampling for the first four rainfalls events that occur after the licence anniversary (18 September) that exceeds 20mm in 24 hours.

 

NLF–10

 

Date

Rainfall

Ph

Total Suspended Solids

(mg/L)

27.10.23

54mm

7.2

27

28.10.23

33mm

7.0

6

 

The table below identifies the environmental monitoring and testing schedule and sampling results as indicated in the Environmental Protection Licence for the strategy for overflow sampling.

 

Pump No 2

 

Date

Rainfall

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium

(mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon

(mg/L)

Total Dissolved Solids

(mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

 

NLF–13

 

Date

Rainfall

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium

(mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon

(mg/L)

Total Dissolved Solids (mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

NLF–10

 

Date

Rainfall

(mm)

Spillway Depth

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium

(mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon (mg/L)

Total Dissolved Solids (mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

NLF–11

 

Date

Rainfall

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium (mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon

(mg/L)

Total Dissolved Solids (mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

PRP–1

 

Date

Rainfall

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium (mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon

(mg/L)

Total Dissolved Solids (mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

NLF–12

 

Date

Rainfall

(mm)

Ammonia

(mg/L)

Nitrate

(mg/L)

Total Nitrogen

(mg/L)

Potassium (mg/L)

Total Suspended Solids

(mg/L)

pH

Total Organic Carbon

(mg/L)

Total Dissolved Solids (mg/l)

Conductivity (Us/cm)

1st Quarter

(Sept – Nov)

2nd Quarter

(Dec – Feb)

3rd Quarter

(March – May)

4th Quarter

(June – Aug)

 

 

 

 

Environmental Compliance - Water and Sewerage

Changes to the environmental protection legislation as a result of the Protection of the Environment Legislation Amendment Act 2011 requires all local Councils to publish effluent discharge monitoring data from each of their wastewater treatment plant sites from 1 July 2012.  Nambucca Valley Council currently operates four wastewater treatment plants located in each of the main urban areas of Nambucca Heads, Macksville, Bowraville and Scotts Head.  The licence details are shown below:

Nambucca Heads
Licensed Facility:  Nambucca Sewage Treatment Plant
Environment Protection Licence: No 803
Facility Address: Mahogany Road, Nambucca Heads NSW 2448; Lots 1 and 2 DP 600728, Lot 1 DP 789966, Lots 4 and 5 DP 1004357.

Macksville
Licensed Facility: Macksville Sewage Treatment Plant
Environment Protection Licence: No 579
Facility Address: River Street, Macksville NSW 2447; Lot 2 DP 538542

Bowraville
Licensed Facility: Bowraville Sewage Treatment Plant
Environment Protection Licence: No 587
Facility Address: River Street, Bowraville NSW 2449

Scotts Head
Licensed Facility: Scotts Head Sewage Treatment Plant
Environment Protection Licence: No 2564
Facility Address: South Pacific Drive (Extension), Scotts Head NSW 2447

General information applicable to all Licences
Licensee's Name: Nambucca Valley Council
Licensee's Address: PO Box 177, Macksville NSW 2447

The link provided below will take you to the Office of Environment and Heritage website, where you can search for each licence by entering the licence number.  Full licence details and past annual returns can be viewed online.

Office of Environment and Heritage

Sewer Treatment Plants Environmental Compliance Reports

Please click on the following links to view the Environmental Compliance Reports:

(PDF, 286KB)1 January 2023 - 31 July 2023(PDF, 306KB)
1 January 2022 - 31 December 2022(PDF, 363KB)
1 January 2021 - 31 December 2021(PDF, 961KB)
1 January 2020 - 31 December 2020(PDF, 956KB)

Sewerage Treatment Plants(PDF, 178KB) 01/01/2019 to 31/12/2019
Sewerage Treatment Plants(PDF, 339KB) 08/04/2015 to 31/12/2018
Sewerage Treatment Plants(PDF, 128KB) 09/01/2014 to 30/04/2015
Sewerage Treatment Plants(PDF, 130KB) 03/01/2013 to 29/05/2014
Sewerage Treatment Plants(PDF, 108KB) 11/07/2012 to 04/09/2013