Figure 1 and tables 1 –8 summarise the water distribution for Shoalhaven City Council for 2009-10. The tables provide a breakdown for values shown in Figure 1. Notes for the values provided in tables 1 –8 are available after Table 8.
Figure 1. Diagram of water distribution summary for Shoalhaven City Council for 2009–10
| Item | Sources of water | Volume (ML) | Note identifier | |
|---|---|---|---|---|
| 1 | Delivered via the water supply system | Water sourced from external entity | Not applicable | |
| 2 | Water sourced from surface water | 14,078 | SCC_U1 | |
| 3 | Water sourced from groundwater | Not applicable | ||
| 4 | Water sourced from desalination | Not applicable | ||
| 5 | Water sourced from recycling | Not applicable | ||
| 6 | Total water sourced | 14,078 | Item 2 | |
|
Item |
Water export |
Volume (ML) |
Note identifier |
|---|---|---|---|
|
1 |
Potable water export |
2,574 |
SCC_U7 |
|
2 |
nonpotable water export |
1,174 |
SCC_U8 |
|
3 |
Total export |
3,748 |
Items (1+2) |
| Item | Water usage | Volume (ML) | Note identifier |
|---|---|---|---|
| 1 | Residential – potable water | 3,125 | SCC_U9 |
| 2 | Commercial, industrial, municipal – potable water | 3,597 | SCC_U10 |
| 3 | Other including Agricultural – potable water | 567 | SCC_U11 |
| 4 | Residential – nonpotable water | 8 | SCC_U12 |
| 5 | Commercial, industrial, municipal – nonpotable water | 2,180 | SCC_U13 |
| 6 | Total water use | 9,477 | Sum of items 1 to 5 |
| Item | Losses | Volume (ML) | Note identifier |
|---|---|---|---|
| 1 | Losses from potable, nonpotable water supplies | 853 | SCC_U17 & U18 |
| 2 | Losses from recycled water supplies | Not available | |
| 3 | Total water losses | 853 | Item 1 |
| Item | Wastewater collected and treated | Volume (ML) | Note identifier |
|---|---|---|---|
| 1 | Wastewater collected and treated within the entity | 3,664 | SCC_U19a* |
| 2 | Wastewater collected and treated from external entity | 0 | |
| 3 | Total wastewater collected and treated | 3,664 | Item 1 |
* SCC_U19a which is the note for wastewater collected also applies for wastewater treated.
| Item | Wastewater discharged | Volume (ML) | Note identifier |
|---|---|---|---|
| 1 | Treated wastewater discharged to surface water | 2,742 | SCC_U22 |
| 2 | Treated wastewater discharged to ocean | 152 | SCC_U23 |
| 3 | Total volume discharged | 2,894 | Items (1 + 2) |
| Item | Recycled water produced and supplied | Volume (ML) | Note identifier |
|---|---|---|---|
| 1 | Total recycled water produced | 770 | SCC_U30 |
| 2 | Recycled water supplied to commercial, industrial, municipal | 62 | SCC_U32 |
| 3 | Recycled water supplied to agricultural | 701 | SCC_U33 |
| 4 | Recycled water use on-site / in-process | 7 | SCC_U34 |
| 5 | Total recycled water supplied | 763 | Items (2 + 3) |
| Item | Component | Volume (ML) | Reference |
|---|---|---|---|
| 1 | Water use from potable and nonpotable water supply | 9,477 | Table 3 |
| 2 | Water use from recycled water supply | 763 | Table 7 |
| 3 | Total water use | 10,240 | Items (1 + 2) |
(SCC_U1) See the following table for the volume
Shoalhaven City Council’s Telemetry System.
Shoalhaven City Council (SCC).
This item represents the total volume of surface water taken for water supply as shown in the following table. The table presents volumes recorded by the bulk supplier, the Sydney Catchment Authority (SCA) as provided to SCC, and received volumes recorded by SCC.
| Component | Volume recorded by SCC (ML) | Volume recorded by SCA (ML) |
|---|---|---|
| 1. Water diverted from Bendeela Pondage for Kangaroo Valley Water Treatment Plant | 87 | 87 |
| 2. Water diverted from Bamarang Reservoir (water from the Shoalhaven River pumped at Burrier) for the Bamarang and Flat Rock water treatment plants | 10,629 | 14,057 |
| 3. Water diverted from Bamarang Reservoir (water from the Shoalhaven River pumped at Burrier) for nonpotable (raw) water supplies to Bomaderry and Jasper | 2,188 | |
| 4. Water diverted from Bamarang Reservoir (water from the Shoalhaven River pumped at Burrier) for nonpotable (raw) water export to the Clyde River catchment (beyond the Sydney Region) | 1,174 | |
| Total | 14,078 | 14,144 |
Volumes from SCA are based on full bore magnetic flow meter readings to measure water diverted to urban utilities from the storage reservoirs. Sources of SCA data include invoices to retail water utilities, daily returns system database and Integrated Instrumentation Control Automation and Telemetry System (IICATS) meter readings.
Volumes from SCC are based on its telemetry system records. The data extracted from the telemetry system were analysed using Microsoft Access query to derive the volume.
This UrbanSAT Note is based on data provided by SCC, but in order to maintain consistency in calculation, the accounting statements for the Sydney Region show the volumes delivered by the bulk supplier (see Line item 14.7.4). The data suppliers suggest limits of meter accuracy as the cause for the difference.
Volumes for both SCA and SCC have been based on measured data. Estimated accuracy based on meter accuracy is +/–2% for SCA. Estimated uncertainty based on meter accuracy is +/–5% for SCC.
Nil.
SCC_U7 2,574 ML
Shoalhaven City Council’s water billing records and the telemetry system.
Shoalhaven City Council (SCC).
This item represents the total metered volume of potable water exported as supplies to the council’s service area in the Clyde River Catchment (outside the Sydney Region). Metered customer use data extracted from billing records have been used to determine potable water export.
Estimated uncertainty, based on meter accuracy and professional judgment on determination of boundaries of billing areas beyond the Sydney region, is +/–5%.
The compilation of data for the line item has been difficult in that the Sydney Region does not align with the boundaries of SCC. Every effort was made by the council to ensure accuracy on a suburb/location basis.
SCC_U8 1,174 ML
Shoalhaven City Council’s telemetry system.
Shoalhaven City Council (SCC).
This item represents the total metered volume of nonpotable water exported as supplies to the council’s service area in the Clyde River Catchment (outside the Sydney Region). Data sourced from the telemetry system for the flow meters that measure raw water deliveries have been used to derive the volume.
Estimated uncertainty, based on meter accuracy and professional judgment on determination of boundaries of water supply areas beyond the Sydney region, is +/–5%.
The compilation of data for the line item has been difficult in that the Sydney Region does not align with the boundaries of SCC. Every effort was made by the council to ensure accuracy on a suburb/location basis.
SCC_U9 3,125 ML
Shoalhaven City Council’s water billing records.
Shoalhaven City Council.
This item represents the total metered volume of potable water supplied for residential use, based on water billing records.
Estimated uncertainty, based on meter accuracy and professional judgment, is +/–5%.
Nil.
SCC_U10 3,597 ML
Shoalhaven City Council’s water billing records.
Shoalhaven City Council.
This item represents the total metered volume of potable water supplied for commercial, industrial and municipal use based on water billing records.
Estimated uncertainty, based on meter accuracy and professional judgment, is +/–5%.
Nil.
SCC_U11 567 ML
Shoalhaven City Council’s water billing records.
Shoalhaven City Council.
This item represents the total metered volume of potable water supplied for agricultural use based on water billing records.
Estimated uncertainty, based on meter accuracy and professional judgment, is +/–5%.
Nil.
SCC_U12 8 ML
Shoalhaven City Council’s water billing records.
Shoalhaven City Council.
This item represents the total metered volume of nonpotable water supplied for residential use in Jasper Brush from Bamarang Reservoir based on water billing records.
Estimated uncertainty, based on meter accuracy and professional judgment, is +/–5%.
Nil.
SCC_U13 2,180 ML
Shoalhaven City Council’s water billing records.
Shoalhaven City Council.
This item represents the total metered volume of nonpotable water supplied to Bomaderry from Bamarang Reservoir for industrial use based on water billing records.
Estimated uncertainty, based on meter accuracy and professional judgment, is +/–5%.
Nil.
and
Background leakage represents water loss from the system in slow, diffuse or continuous egress forms. A burst is a rupture at a point in the system that generally results in loss of water in fast, point-based or event-based egress forms.
The total volume of leakage and losses is taken as an input to the ‘landscape’ water store, as the breakdown on the component entering ‘groundwater’ is not available separately.
SCC_U17 and SCC_U18 853 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water. The report will be included on the webpage from June 2011; see ‘Additional notes 1’ for more details).
Shoalhaven City Council (SCC).
The value provided by SCC is the total loss and leakage from the urban potable water supply and nonpotable water (raw water diverted from the rivers) supply systems. This volume is estimated as 9% of the total consumption via the urban potable water and nonpotable water supplies.
The volume is based on measured data from a sample area and extrapolated to other areas. Estimated uncertainty based on meter accuracy, professional judgment and organisational practice is +/–5%.
The volume represents total leakage and loss from potable and nonpotable water supply systems, as a breakdown is not available.
The uncertainty estimate is based on the total leakage factor for the whole of the area managed and may not specifically relate to the SCC area within the Sydney Region (i.e. the value provided is likely to be an overestimate).
SCC_U19a 3,664 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council (SCC).
This item represents the total metered volume of wastewater collected and treated by SCC’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | Volume collected/treated in 2009–10 (ML) |
|---|---|
| Berry | 214 |
| Bomaderry | 930 |
| Culburra | 561 |
| Nowra | 1,707 |
| Shoalhaven Heads | 252 |
| Total | 3,664 |
Outflows from wastewater treatment plants (measured as follows) plus on-site use have been considered as wastewater collected assuming no losses at the plants:
The volume of wastewater collected/treated at sewerage treatment plants may also include any net ingress of stormwater or groundwater to the sewer system.
SCC_U19b
Note: information used in SCC_U19a is assumed to be applicable to U19b; any loss from the wastewater treatment process is assumed to be negligible.
SCC_U22 2,742 ML
Shoalhaven City Council (SCC) telemetry system and daily data registers in respect of the operations of the plants.
Shoalhaven City Council.
This item represents the total metered volume of treated wastewater discharge to surface water at SCC’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | Volume discharged (ML) | River / Creek |
|---|---|---|
| Berry | 149 | Broughton Creek |
| Bomaderry | 927 | Abernathys Creek |
| Nowra | 1,666 |
Shoalhaven River |
| Total | 2,742 |
Outflows from wastewater treatment plants have been measured as follows:
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
This information was prepared based on the relevant data provided under Line item U22.
SCC_U23 152 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council.
This item represents the total metered volume of treated wastewater discharge to the sea from wastewater treatment plants.
| Wastewater treatment plant | Volume (ML) |
|---|---|
| Shoalhaven Heads | 152 |
| Total | 152 |
Outflow volumes from Shoalhaven Heads Wastewater Treatment Plant have been measured using an Elster meter, and a Parshall flume with a venturi flow meter.
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
SCC_U30 770 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council (SCC).
This item represents the total metered volume of recycled water produced from sewage from SCC’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | Volume produced (ML) |
|---|---|
| Berry | 65 |
| Bomaderry | 3 |
| Culburra | 561 |
| Nowra | 41 |
| Shoalhaven Heads | 100 |
| Total | 770 |
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
SCC_U32 62 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council (SCC).
This item represents the total metered volume of recycled water supplied for commercial, industrial and municipal uses by SCCl’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | Volume of supplied (ML) |
|---|---|
| Bomaderry | 3 |
| Culburra | 22 |
| Nowra | 37 |
| Total | 62 |
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
SCC_U33 701 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council (SCC).
This item represents the total metered volume of recycled water supplied for irrigation use by SCC’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | Volume supplied (ML) |
|---|---|
| Berry | 64 |
| Culburra | 537 |
| Shoalhaven Heads | 100 |
| Total | 701 |
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
SCC_U34 7 ML
NSW Water Supply and Sewerage Performance Monitoring Report 2009–10 (access through ‘Performance monitoring’ webpage of the NSW Office of Water; the report will be included on the webpage from June 2011).
Shoalhaven City Council (SCC).
This item represents the total metered volume of recycled water used in the wastewater treatment process by SCC’s wastewater treatment plants within the Sydney Region.
| Wastewater treatment plant | On-site within process use volume (ML) |
|---|---|
| Berry | 1 |
| Culburra | 2 |
| Nowra | 4 |
| Total | 7 |
The volume is based on measured data. Estimated uncertainty based on meter accuracy is +/–5%.
Nil.
National Water Account 2010
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