Northern Territory
Northern Territory Power and Water Corporation is owned by the Northern Territory Government and provides water, wastewater and electricity services across the Northern Territory. Water and wastewater services are provided to five major centres (Darwin and Alice Springs being the largest) and 13 minor centres. In addition, Indigenous Essential Services, a subsidiary of the Power and Water Corporation, provides services to 72 remote communities. The service area is 1.35 million square kilometres, with a population of just over 228 000. Darwin has a population of 114 000. Most of its water is from Darwin River Dam (87%), supplemented from Howard East and McMinns borefields (13%). The environment is tropical savannah, and most of the 1712 mm annual rainfall is experienced during the ‘wet’ months from December to April. The timing of the onset of regular evening storms, together with the presence or absence of ‘dry’ season rain, significantly influences water consumption. Alice Springs, in the arid centre of Australia, has a population of 26 000. Water consumption is significantly influenced by the harsh climatic conditions. Potable water supply is sourced from the Roe Creek borefield, and water consumption in the past has been greater than the natural recharge of the aquifers supporting the borefield. In 2009–10, four new bores were drilled at the Roe Creek borefield to secure future water resources for Alice Springs. The Northern Territory Government provides a uniform water tariff policy, which sets equalised water tariff levels and structures across all declared water service delivery areas in the Northern Territory.
Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 155
NT—Power and Water—Alice Springs
Power and Water—Alice Springs www.powerwater.com.au Contact number: 1800 245 091 WATER RESOURCES Sources of water
2004–05
W2
Volume of water sourced from groundwater (ML)
W4
Volume of water sourced from recycling (ML)
W7
Total sourced water (ML)
Uses of water supplied
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
10 500
9 795
10 257
9 845
10 117
1 221
568
545
722
589
11 721
10 363
10 802
10 567
10 706
2005–06
2006–07
2007–08
2008–09
2009–10
W8
Volume of water supplied—Residential (ML)
5 370
5 445
5 747
5 472
5 377
W9
Volume of water supplied—Commercial, municipal and industrial (ML)
3 396
3 265
3 494
3 754
2 136
92
92
64
60
836
8 858
8 802
9 306
9 226
8 348
535
536
563
532
538
W10
Volume of water supplied—Other (ML)
W11
Total urban water supplied (ML)
W12
Average annual residential water supplied (kL/property)
Sewage collected
2004–05
W16
Volume of sewage collected—Residential sewage, non‐ residential sewage and non‐trade waste (ML)
W17
Volume of sewage collected—Trade waste (ML)
W18
Total sewage collected (ML)
W19
Sewage collected per property (kL/property)
Uses of recycled water W21
2004–05
Volume of recycled water supplied—Commercial, municipal and industrial (ML)
W24
Volume of recycled water supplied—On‐site (ML)
W25
Volume of recycled water supplied—Other (ML)
W26
Total recycled water supplied (ML)
W27
Recycled water (percentage of effluent recycled)
2005–06
2006–07
2007–08
2008–09
2009–10
2 595
2 543
2 561
2 924
2 740
166
162
163
0
175
2 761
2 706
2 724
2 924
2 914
257
247
246
262
265
2005–06
2006–07
2007–08
2008–09
2009–10
1 071
568
545
722
589
150
302
253
257
0
185
203
1 221
870
797
1 165
792
63
50
29
40
27
ASSET Other water assets
2004–05
A2
Length of water mains (km)
A3
Properties served per km of water main
Sewerage assets
2004–05
A4
Number of sewage treatment plants
A5
Length of sewerage mains and channels (km)
A6
Properties served per km of sewer main
Recycled water treatment plants A7
2004–05
2006–07
2007–08 385
386
401
30
30
30
30
28
2005–06
2006–07
2007–08
A10
Real losses (L/service connection/d)
A11
Real losses (kL/km water main/d)
2009–10
1
1
1
1
194
194
194
201
203
56
57
57
55
53
2005–06
2006–07
2007–08
2005–06
2006–07
2008–09
2007–08 56
2004–05
Infrastructure leakage index (ILI)
2008–09
1
Water main breaks (per 100 km of water main)
Water losses
2009–10
384
1 2004–05
A9
2008–09
379
Number of recycled water treatment plants
Water main breaks A8
2005–06
2005–06
2006–07
2009–10 1
2008–09 49
2007–08
1 2009–10
80 2008–09
58 2009–10
3.2
1.7
4.8
233.0
128.0
349.0 7.3
Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 156
NT—Power and Water—Alice Springs Sewerage breaks and chokes
2004–05
A14
Sewerage mains breaks and chokes (per 100 km sewer main)
A15
Property connection sewer breaks and chokes (per 1000 properties)
2005–06
2006–07
2007–08
2008–09
2009–10 15 4
CUSTOMERS Connected properties and population
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
C1
Population receiving water supply services (000s)
26
26
26
26
26
C2
Connected residential properties—water supply (000s)
10
10
10
10
10
C3
Connected non‐residential properties—water supply (000s)
1
1
1
1
1
C4
Total connected properties—water supply (000s)
11
12
12
12
11
C5
Population receiving sewerage services (000s)
25
26
26
26
26
C6
Connected residential properties—sewerage (000s)
10
10
10
10
10
C7
Connected non‐residential properties—sewerage (000s)
1
1
1
1
1
C8
Total connected properties—sewerage (000s)
11
11
11
11
11
Water quality complaints C9
2004–05
2005–06
Water quality complaints (per 1000 properties)
1
Water service complaints C10
2004–05
2005–06
2004–05
2005–06
Water service complaints (per 1000 properties)
Sewerage service complaints (per 1000 properties)
C12
0
2004–05
2005–06
Total water and sewerage complaints C13
2006–07
2005–06
Total water and sewerage complaints (per 1000 properties)
C15
125 2004–05
Average duration of an unplanned interruption—water (minutes)
Average sewerage interruption C16
100 2004–05
2005–06
2004–05
2005–06
2004–05
2005–06
Average sewerage interruption (minutes)
Average frequency of unplanned interruptions—water (per 1000 properties)
Restrictions or legal action for non‐payment of water bill C18
2006–07
2006–07
172
286 2006–07
C19
Number of legal actions applied for non‐payment of water bill (per 1000 properties)
2.0
4 2009–10
127 2008–09
100
116 2009–10
85 2008–09
65
133 2009–10
71 2008–09
133 2007–08
Number of restrictions applied for non‐payment of water bill (per 1000 properties).
2009–10
2008–09
2007–08
11
4
105
59 2006–07
17
5
2007–08
100 2009–10
2008–09
2007–08
118
108
Water interruption frequency C17
2005–06
106
11
2007–08
0 2009–10
2008–09
2007–08
2006–07
0
90
11
2009–10
2008–09
2007–08
3 2004–05
Average duration of unplanned water supply interruptions
0
111
Billing and account complaints—water and sewerage (per 1000 properties)
2008–09
2007–08
2006–07 13
Billing and account complaints
2007–08
2006–07
121
Sewerage service complaints C11
2006–07
129 2009–10
114 2008–09
155 2009–10
1.0
2.4
9.1
0.0
0.3
0.5
ENVIRONMENT Comparative sewage treatment levels
2004–05
E2
Percentage of sewage treated to a secondary level
E3
Percentage of sewage treated to a tertiary or advanced level
100
Sewage treatment plant compliance E4
2004–05
2007–08
100
2005–06
2006–07
100 2004–05
Number of sewage treatment plants compliant at all times
2006–07
2008–09
100
2009–10
100
73 27
Percentage of sewage volume treated that was compliant
Number of sewage treatment plants compliant at all times E5
2005–06
2005–06 1 of 1
2007–08 94
2006–07 0 of 1
2008–09 82
2007–08
2009–10 84
2008–09
0 of 1
97 2009–10
0 of 1
0 of 1
Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 157
NT—Power and Water—Alice Springs Public disclosure of your sewage treatment plant performance E6
2004–05
Public disclosure of your sewage treatment plant's performance (yes/no)
E10 E11
2006–07
Yes
Net greenhouse gas emissions E9
2005–06
2004–05
2005–06
Yes 2006–07
Yes 2007–08
2009–10
Yes 2008–09
Yes 2009–10
683
665
680
659
724
Greenhouse gas emissions—sewerage (tonnes CO2‐equivalent per 1000 properties)
36
27
35
30
32
117
13
12
Total net greenhouse gas emissions (net tonnes CO2‐ equivalent per 1000 properties)
831
Sewer overflows E13
2008–09
Greenhouse gas emissions—water (tonnes CO2‐equivalent per 1000 properties)
Net greenhouse gas emissions—other (net tonnes CO2 equivalent per 1000 properties)
E12
2007–08
2004–05
2005–06
2006–07
2007–08
701 2008–09
Sewer overflows reported to the environmental regulator (no. per 100 km of sewer main)
767 2009–10
2.0
0.5
PRICING Residential tariff structure—2009–10
Description
Amount
Tariff structure—water (text)
See notes
1
0
2
137.06
3
0.90
4
Free water allowance—water (kL/property) Fixed charge—water ($/property) Usage charge 1st step Average annual residential water supplied (kL per property)
538
Number of meter readings per annum—water
4
Number of bills per annum—water
4
Fixed charge—sewerage ($/property)
428.04
Income from special levies retained by utility?—sewerage (yes/no)
No
Number of bills per annum—sewerage
4
PRICING—ANNUAL BILL Annual bill (based on 200 kL residential water supplied)
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
P2
Annual bill based on 200 kL/a—water ($)
269.42
270.12
316.86
P5
Annual bill based on 200 kL/a—sewerage ($)
363.94
364.90
428.04
P7
Annual bill based on 200 kL/a (water & sewerage) ($)
Annual bill (based on average residential annual water supplied)
633.36 2004–05
2005–06
2006–07
2007–08
635.03 2008–09
744.90 2009–10
P3
Typical residential bill—water ($)
547.09
524.80
621.00
P6
Typical residential bill—sewerage ($)
363.94
364.90
428.04
Typical residential bill (water & sewerage) ($)
911.04
889.72
1 049.04
P8
1
PWC currently employs a two-part tariff pricing system, comprising a fixed access component and a usage component. The fixed component is based on the size of meters. 2 No free water allowance. 3 Based on meter size up to 25 mm. 4 PWC currently adopts a single usage charge, with no free water allowance to its customers. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 158
NT—Power and Water—Alice Springs FINANCE Revenue
2004–05
F1
Total revenue—water ($000)
F2
Total revenue—sewerage ($000)
F3
Total income for utility ($000)
F4
Residential revenue from usage charges—water (%)
F5
2005–06
2006–07
10 269
2007–08
9 540
2008–09
10 033
2009–10
10 597
10 636
5 296
4 924
4 955
4 881
5 766
15 565
14 463
14 988
15 478
16 402
80
78
79
76
77
Revenue per property for water supply services ($/property)
914
829
867
908
933
F6
Revenue per property for sewerage services ($/property)
493
448
448
438
530
F7
Income per property for utility ($/property)
1 386
1 257
1 296
1 327
1 439
Revenue from community service obligations (CSOs) F8
2004–05
2005–06
2006–07
2007–08
2008–09
Revenue from community service obligations(%)
Written‐down replacement costs of fixed assets F9
2004–05
2005–06
2006–07
Written‐down replacement cost of fixed water supply assets ($000s)
F10
2009–10 15
Written‐down replacement cost of fixed sewerage assets ($000s)
Costs
2004–05
2005–06
2007–08
2008–09
9 2009–10
118 104
60 933
67 947
64 550
48 684
54 144
62 691
62 124
2006–07
2007–08
2008–09
2009–10
F11
Operating cost—water ($/property)
688
763
839
764
842
F12
Operating cost—sewerage ($/property)
386
388
332
373
407
F13
Combined operating cost—water and sewerage ($/property)
1 075
1 152
1 171
1 138
1 249
Capital expenditure
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
F14
Total water supply capital expenditure ($000s)
1 746
763
1 679
10 181
8 398
F15
Total sewerage capital expenditure ($000s)
1 671
4 674
3 489
1 278
2 551
F16
Total capital expenditure for water and sewerage ($000s)
3 417
5 436
5 167
11 459
10 949
F28
Water supply capital expenditure ($/property)
159
64
140
873
737
F29
Sewerage capital expenditure ($/property)
152
425
317
115
235
Economic real rate of return—water and sewerage
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10 5
F17
Economic real rate of return—water
0
‐1
‐4
‐2
‐5
F18
Economic real rate of return—sewerage
1
0
2
0
‐1
F19
Economic real rate of return—water and sewerage
0
‐1
‐1
‐1
‐3
Dividends F20
Dividend ($000s)
F21
Dividend payout ratio (%)
2004–05
2006–07
2007–08
2008–09
2009–10
0 2004–05
F24
Net profit after tax ($000s)
F30
NPAT ratio (%)
2005–06
2006–07
2007–08
2008–09
2009–10 ‐5 690 0
Community service obligations (CSOs)
2004–05
2005–06
2006–07
2007–08
2008–09
2004–05
2005–06
2006–07
2007–08
2008–09
Community service obligations ($000s)
2009–10
2 353
Capital works grants—water and sewerage F26
6
0
Net profit after tax
F25
2005–06
5
Capital works grants—water ($000s)
0
1 453 2009–10
0
0
5
Data for 2009–10 excludes interest income, and asset depreciation expenses are calculated based on asset replacement value rather than book value. 6 Refer to F17 and F18. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 159
NT—Power and Water—Alice Springs F27
Capital works grants—sewerage ($000s)
0
0
0
2005–06
2006–07
2007–08
2008–09
2009–10
ADWG 2004
ADWG 2004
ADWG 2004
ADWG 2004
ADWG 2004
1 of 3
3 of 3
3 of 3
1 of 1
1 of 1
100
100
100
100
100
0 of 3
0 of 3
0 of 1
1 of 1
HEALTH Water quality compliance
2004–05
H1
Water quality guidelines
H2
Number of zones where microbiological compliance was achieved (e.g. 23 of 24)
H3 H4
% of population for which microbiological compliance was achieved Number of zones where chemical compliance was achieved (e.g. 23 of 24)
H5
Risk‐based drinking water management plan externally assessed? (yes/ no)
No
No
No
No
No
H6
Risk‐based drinking water management plan (Please specify plan in place e.g. ISO9001, HACCP, ADWG Aquality assessment)
No
No
No
No
No
Public disclosure of drinking water performance (yes/no)
Yes
Yes
Yes
Yes
Yes
H7
Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 160
NT—Power and Water—Darwin
Power and Water—Darwin www.powerwater.com.au Contact number: 1800 245 091 WATER RESOURCES Sources of water
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
W1
Volume of water sourced from surface water (ML)
34 643
36 105
35 067
37 815
35 878
W2
Volume of water sourced from groundwater (ML)
3 633
4 426
4 975
5 274
5 489
W4
Volume of water sourced from recycling (ML)
364
374
429
437
441
W7
Total sourced water (ML)
38 640
40 905
40 471
43 575
41 809
Uses of water supplied
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
W8
Volume of water supplied—Residential (ML)
16 862
17 153
19 189
19 552
20 170
19 787
W9
Volume of water supplied—Commercial, municipal and industrial (ML)
10 631
15 779
16 324
15 941
16 526
14 544
W10
Volume of water supplied—Other (ML)
7 649
1 589
1 161
1 226
1 001
618
W11
Total urban water supplied (ML)
35 142
34 521
36 674
36 719
37 504
34 949
W12
Average annual residential water supplied (kL/property)
444
443
483
480
491
458
Sewage collected W16
2004–05
Volume of sewage collected—Residential sewage, non‐ residential sewage and non‐trade waste (ML)
W17
Volume of sewage collected—Trade waste (ML)
W18
Total sewage collected (ML)
W19
Sewage collected per property (kL/property)
Volume of recycled water supplied—Commercial, municipal and industrial (ML)
W24
Volume of recycled water supplied—On‐site (ML)
W26
Total recycled water supplied (ML)
2007–08
2008–09
2009–10
13 860
13 683
14 543
14 181
16 554
691
885
873
928
905
1 057
11 520
14 745
14 557
15 471
15 086
17 611
2004–05
W21
2006–07
10 829
281
Uses of recycled water
W27
2005–06
337 2005–06
322 2006–07
329 2007–08
312 2008–09
383 2009–10
344
374
429
437
441
37
41
42
43
0
380
415
471
480
441
3
3
3
3
3
Recycled water (percentage of effluent recycled)
1
ASSET Other water assets
2004–05
A2
Length of water mains (km)
A3
Properties served per km of water main
Sewerage assets Number of sewage treatment plants
A5
Length of sewerage mains and channels (km)
A6
Properties served per km of sewer main
2009–10
1 287
1 319
1 311
36
37
37
38
38
38
Number of recycled water treatment plants
A8
2008–09
1 267
2005–06
2004–05
2004–05
2006–07
2008–09
2009–10
6
6
6
6
6
683
690
712
737
65
66
68
68
62
2005–06
2006–07 1
2005–06
Water main breaks (per 100 km of water main)
2007–08
672
1
Water main breaks
2007–08
1 246
6
Recycled water treatment plants
2006–07
1 229
2004–05
A4
A7
2005–06
2007–08 1
2006–07 55
2008–09 1
2007–08 41
2009–10 1
2008–09 41
1 2009–10
60
58
1
Humpty Doo ponds disposal not treated as recycled water in 2009–10. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 161
NT—Power and Water—Darwin Water losses
2004–05
A9
Infrastructure leakage index (ILI)
A10
Real losses (L/service connection/d)
A11
Real losses (kL/km water main/d)
2005–06
2006–07
2007–08
2008–09
2009–10
5.8
1.7
4.0
3.2
6.0
7.1
379.0
108.0
256.0
202.0
384.0
445.0 11.5
Sewerage breaks and chokes
2004–05
A14
Sewerage mains breaks and chokes (per 100 km sewer main)
A15
Property connection sewer breaks and chokes (per 1000 properties)
2005–06
2006–07
2007–08
2008–09
2009–10 17 2
CUSTOMERS Connected properties and population
2004–05
C1
Population receiving water supply services (000s)
C2
Connected residential properties—water supply (000s)
C3
Connected non‐residential properties—water supply (000s)
C4
Total connected properties—water supply (000s)
C5
Population receiving sewerage services (000s)
C6
Connected residential properties—sewerage (000s)
C7
Connected non‐residential properties—sewerage (000s)
C8
Total connected properties—sewerage (000s)
Water quality complaints C9
2005–06
38
39
40
41
41
43
6
7
8
9
10
7
44
46
47
49
51
50
100
101
103
105
107
36
37
38
39
39
41
5
7
7
8
9
5
41
44
45
47
48
46
2005–06
2004–05
2005–06
2004–05
2006–07
2005–06
2004–05
2006–07
C13
6 2004–05
2005–06
2006–07
Total water and sewerage complaints (per 1000 properties)
Average duration of unplanned water supply interruptions C15
2004–05
2005–06
Average duration of an unplanned interruption—water (minutes)
Average sewerage interruption C16
47 2004–05
2005–06
2004–05
2005–06
Average sewerage interruption (minutes)
2006–07
Average frequency of unplanned interruptions—water (per 1000 properties)
Restrictions or legal action for non‐payment of water bill
175 2004–05
157 2005–06
84
120 2006–07
69
56
2009–10
2008–09
64 2009–10
91 2008–09
160 2007–08
62
74
100 2007–08
9 2009–10
2008–09
2007–08
2006–07
2009–10
2008–09
2007–08
9
8
62
57
90
Water interruption frequency C17
2006–07
2009–10
2008–09
2007–08
41
10
8
77
2009–10
2008–09
2007–08
2
44
10
3
2009–10
2008–09
2007–08
109
7
37
10
Billing and account complaints—water and sewerage (per 1000 properties)
Total water and sewerage complaints
2007–08
2006–07
2005–06
2008–09 8
59
13
Billing and account complaints
2007–08 3
31
Sewerage service complaints (per 1000 properties)
C12
2006–07
114
2
112
Water service complaints (per 1000 properties)
C11
2009–10
110
2
Sewerage service complaints
2008–09
108
2004–05
Water service complaints
2007–08
106
Water quality complaints (per 1000 properties)
C10
2006–07
104
115 2009–10
200 2008–09
53 2009–10
C18
Number of restrictions applied for non‐payment of water bill (per 1000 properties).
0.0
1.0
1.6
6.6
C19
Number of legal actions applied for non‐payment of water bill (per 1000 properties)
1.0
0.0
0.3
0.1
2
The population is estimated by taking the ABS population projections (3222.7) and removing 1% to allow for those areas that are on bores. 3 The population is estimated by taking the ABS populations (3222.7) and removing 4% to allow for those areas that use septic tanks. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 162
NT—Power and Water—Darwin ENVIRONMENT Comparative sewage treatment levels
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
E1
Percentage of sewage treated to a primary level
39
38
38
40
39
E2
Percentage of sewage treated to a secondary level
58
59
59
57
59
E3
Percentage of sewage treated to a tertiary or advanced level
2
3
3
3
3
Sewage treatment plant compliance E4
2004–05
Percentage of sewage volume treated that was compliant
Number of sewage treatment plants compliant at all times E5
2005–06
100 2004–05
2006–07
100 2005–06
9 2006–07
Number of sewage treatment plants compliant at all times
Public disclosure of your sewage treatment plant performance E6
2007–08
2005–06
2006–07
2004–05
2005–06
2006–07
Public disclosure of your sewage treatment plant's performance (yes/no)
2009–10 21
2008–09
0 of 5 2007–08
Yes
Net greenhouse gas emissions
29 2007–08
0 of 5 2004–05
2008–09
2009–10
0 of 5 2008–09
Yes 2007–08
76
0 of 5 2009–10
Yes 2008–09
Yes 2009–10
E9
Greenhouse gas emissions—water (tonnes CO2‐equivalent per 1000 properties)
141
160
162
155
171
168
E10
Greenhouse gas emissions—sewerage (tonnes CO2‐equivalent per 1000 properties)
42
50
41
36
33
43
Net greenhouse gas emissions—other (net tonnes CO2 equivalent per 1000 properties)
320
11
10
Total net greenhouse gas emissions (net tonnes CO2‐ equivalent per 1000 properties)
509
214
217
E11 E12
Sewer overflows E13
2004–05
2005–06
2006–07
2007–08
2008–09
Sewer overflows reported to the environmental regulator (no. per 100 km of sewer main)
2009–10 0.3
0.3
PRICING Residential tariff structure—2009–10
Description
Amount
Tariff structure—water (text)
See notes
Free water allowance—water (kL/property)
4
0
Fixed charge—water ($/property)
137.06
5
0.90
6
Usage charge 1st step Income from special levies retained by utility? (yes/no)—water (yes/no)
No
Average annual residential water supplied (kL per property)
458
Number of meter readings per annum—water
4
Number of bills per annum—water
4
Tariff structure—sewerage
See notes
Fixed charge—sewerage ($/property)
428.04
Income from special levies retained by utility?—sewerage (yes/no)
No
Number of bills per annum—sewerage
4
4
PWC currently employs a two-part tariff pricing system, comprising a fixed access component and a usage component. The fixed component is based on the size of meters. 5 Based on the meter size up to 25 mm. 6 PWC currently adopts a single usage charge, with no free water allowance to its customers. 7 Fixed annual charge. Recycled water
Wastewater
7
Water
National Performance Report 2009–10_Part B
Page 163
NT—Power and Water—Darwin PRICING—ANNUAL BILL Annual bill (based on 200 kL residential water supplied)
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
P2
Annual bill based on 200 kL/a—water ($)
269.03
270.12
316.86
P5
Annual bill based on 200 kL/a—sewerage ($)
363.94
364.90
428.04
P7
Annual bill based on 200 kL/a (water & sewerage) ($)
633.36
635.03
744.90
Annual bill (based on average residential annual water supplied)
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
P3
Typical residential bill—water ($)
483.82
493.09
549.00
P6
Typical residential bill—sewerage ($)
363.94
364.90
428.04
Typical residential bill (water & sewerage) ($)
847.76
858.15
977.04
P8
FINANCE Revenue
2004–05
2005–06
2006–07
2007–08
2008–09
2009–10
F1
Total revenue—water ($000)
37 534
35 978
39 928
38 609
39 379
43 080
F2
Total revenue—sewerage ($000)
22 999
22 114
23 872
24 527
26 253
29 657
F3
Total income for utility ($000)
60 553
58 092
63 817
70 679
65 644
72 940
F4
Residential revenue from usage charges—water (%)
81
74
73
74
F5
Revenue per property for water supply services ($/property)
853
783
841
781
776
F6
Revenue per property for sewerage services ($/property)
561
506
528
521
544
F7
Income per property for utility ($/property)
1 376
1 265
1 344
1 430
1 294
Revenue from community service obligations (CSOs) F8
2004–05
Revenue from community service obligations(%)
3
Written‐down replacement costs of fixed assets F9
2004–05
Written‐down replacement cost of fixed water supply assets ($000s)
F10
2005–06
Written‐down replacement cost of fixed sewerage assets ($000s)
Costs
306 061 127 713 2004–05
2006–07 3
2005–06
2007–08 3
2006–07
374 159 156 583 2005–06
2008–09 3
2007–08
375 063 161 195 2006–07
74 866
10
648 1 466
10
4 2009–10
357 617
157 718
9
2009–10
2008–09
2007–08
8
3
349 008
8
363 988
164 467 2008–09
170 514 2009–10
F11
Operating cost—water ($/property)
327
341
425
408
470
496
F12
Operating cost—sewerage ($/property)
312
291
360
352
326
369
F13
Combined operating cost—water and sewerage ($/property)
639
632
786
760
797
865
Capital expenditure
2004–05
F14
Total water supply capital expenditure ($000s)
F15
Total sewerage capital expenditure ($000s)
F16
Total capital expenditure for water and sewerage ($000s)
F28 F29
2006–07
2007–08
2008–09
2009–10
9 142
7 820
14 626
21 158
7 647
8 398
8 785
10 628
14 245
15 101
18 334
17 540
16 605
25 254
35 403
57 616
Water supply capital expenditure ($/property)
243
199
166
298
417
854
Sewerage capital expenditure ($/property)
187
191
195
226
295
330
2004–05
Economic real rate of return—water
2005–06
2006–07 3
2007–08 3
2008–09 2
42 514
11
10 687
Economic real rate of return—water and sewerage F17
2005–06
2009–10 1
1
8
Data for 2009–10 excludes interest income, and asset depreciation expenses are calculated based on asset replacement value rather than book value. 9 Data for 2009–10 includes rental income as per indicator definition. 10 Refer F3. 11 Palmerston Transmission Main $2 million, Raise Darwin River Dam $7.8 million, Replace Pumpsets at McMinns $2.4 million and CBD ring main $5.5 million. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 164
12
NT—Power and Water—Darwin 12
F18
Economic real rate of return—sewerage
4
3
4
5
4
F19
Economic real rate of return—water and sewerage
3
3
3
3
2
13
14
Dividends F20
Dividend ($000s)
F21
Dividend payout ratio (%)
2004–05
Net debt to equity F22
2004–05
2005–06
2005–06
Net debt to equity (%) 2004–05
2004–05
F24
Net profit after tax ($000s)
F30
NPAT ratio (%) 2004–05
Community service obligations ($000s)
1 657
Capital works grants—water and sewerage F26 F27
50
0
0
0
2007–08 57
2.6 2006–07
2004–05
2005–06
2005–06
1.1
1 803 2006–07
2009–10
0
7 569
1 827
15
0 2009–10
5 385
‐612
8
0
2008–09
2007–08
159 2009–10
2008–09
2007–08
14
69 2008–09
2007–08
2006–07
1 590
2008–09 60
2007–08
10 228
Community service obligations (CSOs) F25
0
2006–07
2005–06
2009–10 0
0.4
Net profit after tax
2008–09 0
2006–07
2005–06
Interest cover
2007–08
5 115
30
Interest cover F23
2006–07
2009–10
1 835 2008–09
2 951 2009–10
Capital works grants—water ($000s)
0
0
10 230
0
Capital works grants—sewerage ($000s)
0
0
15 345
0
HEALTH Water quality compliance
2004–05
H1
Water quality guidelines
H2
Number of zones where microbiological compliance was achieved (e.g. 23 of 24)
H3 H4
% of population for which microbiological compliance was achieved Number of zones where chemical compliance was achieved (e.g. 23 of 24)
2005–06
2006–07
2007–08
2008–09
2009–10
ADWG 2004
ADWG 2004
ADWG 2004
ADWG 2004
ADWG 2004
4 of 4
4 of 4
6 of 6
2 of 2
2 of 2
100
100
100
100
100
4 of 4
4 of 4
2 of 6
1 of 2
2 of 2
H5
Risk‐based drinking water management plan externally assessed? (yes/ no)
No
No
No
No
No
H6
Risk‐based drinking water management plan (Please specify plan in place e.g. ISO9001, HACCP, ADWG Aquality assessment)
No
No
No
No
No
Public disclosure of drinking water performance (yes/no)
Yes
Yes
Yes
Yes
Yes
H7
12
Data for 2009–10 excludes interest income, and asset depreciation expenses are calculated based on asset replacement value rather than book value. 13 Refer F17 and F18. 14 No dividend due to an ongoing dividend moratorium granted to PWC by the Northern Territory Government. 15 For the water and sewerage businesses of the whole of the utility. Recycled water
Wastewater
Water
National Performance Report 2009–10_Part B
Page 165
