Environmental
Environmental Indicators
| 2002-03 | 2003-04 | 2004-05 | 2005-06 | |
|---|---|---|---|---|
| EN1 Total materials use other than water by type. Type: Partial Reported: Full |
Total materials use other than water by type
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| EN2 Percentage of materials used that are wastes (processed or unprocessed) from sources external to the reporting organisation. Recycled materials- copy paper. Type: Partial Reported: Full |
Percentage of materials used that are wastes (processed or unprocessed) from sources external to the reporting organisation.Recycled Paper
Recycled Concrete
| |||
| EN3 Direct energy use segmented by primary source GJ, by City West Water and Field Services and Maintenance Contractor. Type: Core Reported: Full |
Total direct energy use | |||
| Direct energy - LPG use | City West Water 457.99 Contractor 106.08 |
City West Water 708.51 Contractor 0 |
City West Wtaer 760.37 Contractor81.85 |
City West Water 1646.35 Contractor 358.82 |
| Direct energy - natural gas | City West Water 4353.04 Contractor 0 |
City West Water 4003.49 Contractor 0 |
City West Water 2947.65 Contractor 0 |
City West Water 4061.04 Contractor 0 |
| Direct energy - petrol use | City West Water 5661.07 Contractor 5045.53 |
City West Water 6121.20 Contractor 6467.01 |
City West Water 5948.96 Contractor 6643.25 |
City West Water 6952.54 Contractor 6771.02 |
| Direct energy - diesel | City West Water 553.89 Contractor 4779.08 |
City West Water 933.27 Contractor 4364.50 |
City West Water 655.30 Contractor 4890.32 |
City West Water 801.94 Contractor 4076.76 |
| EN4 Indirect energy use Type: Core Reported: Full |
Indirect energy use | |||
| EN5 Type: Reported: |
Total water use | |||
| EN6 Location and size of land owned, leased, or managed in biodiversity rich habitats. Type: Core Reported: Full |
None of the land that we own, lease or manage is located in a biodiversity rich habitat. | None of the land that we own, lease or manage is located in a biodiversity rich habitat. | None of the land that we own, lease or manage is located in a biodiversity rich habitat. | None of the land that we own, lease or manage is located in a biodiversity rich habitat. |
| EN7 Description of the major impacts on biodiversity associated with activities and/or products and services in terrestrial, fresh water and marine environments. Type: Core Reported: Full |
A marine biological assessment on the mixing zone at the Altona Treatment Plant determined that there was a strong but localised effect on the abundance of certain species groups within the mixing zone. However, the study indicated that overall there was low or negligible impact on environmental value. | A marine biological assessment recently completed on the mixing zone at the Altona Treatment Plant determined that there was a strong but localised effect on the abundance of certain species groups within the mixing zone. However, the study indicated that overall there was low or negligible impact on environmental value. | A previous marine biological assessment on the mixing zone at the Altona Treatment Plant determined that there was a localised effect on the abundance of certain species groups within the mixing zone. However, the study indicated that overall there was low or negligible impact on environmental value. The quality of the discharge has not varied significantly and recent tests show no acute toxicity, so the effect on the environment would not have altered. | The marine biological assessment study program on the mixing zone at the outfall in Altona Bay determined that there was a local effect on the abundance of certain species groups within the mixing zone. The quality of the treated wastewater discharge was such that there was no measurable toxicity on the indicator species at wastewater concentrations beyond the mixing zone. Overall, the program showed that there was negligible impact on the environmental values. |
| EN8 Greenhouse gas emissions by City West Water and Field Services and Maintenance Contractor. Type: Core Reported: Full |
Greenhouse gas emissions
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| EN9 Use and emissions of ozonedepleting substances. Type: Core Reported: Full |
Use and emissions of ozone - depleting substances
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| EN10 NOx, SOx, and other significant air emissions by type Type: Partial Reported: Full |
NOx, SOx and other significant air emissions by type
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| EN11 Total amount of waste by type and destination. Type: Partial Reported: Full |
Total amount of waste by type and destination | |||
| EN12 Significant discharges to water by type. Type: Core Reported: Full |
Significant discharges to water by type | |||
| EN13 Significant spills of chemicals, oils and fuels in terms of total number and total volume. Type: Core Reported: Full |
We experienced no significant spills. | We experienced no significant spills. | We experienced no significant spills. | We experienced no significant spills. |
| EN14 Significant environmental impacts of principal products and services. Type: Core Reported: Full |
Our principal products and services are water services, sewer services, trade waste services and recycled water services. The significant environmental impacts of these services are: surface water contamination; groundwater contamination; land contamination; destruction of flora, fauna and habitat; eutrophication (increased levels of phosphorus and nitrogen in a body of water); greenhouse gas emissions; odour; depletion of natural resources; noise; waste disposal; and erosion. | Our principal products and services are water services, sewer services, trade waste services and recycled water services. The significant environmental impacts of these services are: surface water contamination; groundwater contamination; land contamination; destruction of flora, fauna and habitat; eutrophication (increased levels of phosphorus and nitrogen in a body of water); greenhouse gas emissions; odour; depletion of natural resources; noise; waste disposal; and erosion. | The significant environmental aspects of our services are detailed in our Environment Improvement Plan here. | The significant environmental aspects of our services are detailed in our Environment Improvement Plan here. |
| EN15 Percentage of the weight of products sold that is reclaimable at the end of the products useful life and percentage that is actually reclaimed. Type: Partial Reported: Full |
0 | 0 | 0 | 0 |
| EN16 Incidents of and fines for non-compliance with all applicable international declarations/conventions/treaties, and national, sub-national, regional, and local regulations associated with environmental issues Type: Core Reported: Full |
We received no fines or prosecutions for public health and environmental offences. | We received no fines or prosecutions for public health and environmental offences. | We received no fines or prosecutions for public health and environmental offences. | We received no fines or prosecutions for public health and environmental offences. |
| EN17 Initiatives to use renewable energy sources and to increase energy efficiency Type: Additional Reported: Full |
N/A | Of the energy we purchased in 20032004, 5% is renewable. This year, four water and sewerage monitoring sites were converted to solar power (they were previously using Battery power and un-metered mains power). It is not possible to quantify how much power (conventional) has been previously used as most sites were battery powered and the rest were using un-metered power. These monitoring sites could use about 100-120 Watts on average per day. | As per Government Policy and commitments made in our Sustainability Covenant we have increased the amount of Green Energy sources from our supplier AGL from 5 to 10% in January 2005. In 2004-05 another 48 water and sewerage monitoring sites were converted to solar power. It is not possible to quantify how much power (conventional) has been previously used as most sites were battery powered and the rest were using un-metered power. These monitoring sites could use about 100-120 Watts on average per day.
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City West Water currently purchases 10% of its total electricity from renewable energy sources such as biomass, hydro, solar and wind generated electricity. The business is strongly committed to using solar power as an alternative to electricity for SCADA monitoring stations and wherever applicable. During 2005-06 an additional 4 solar powered monitoring sites were commissioned. |
| EN18 Energy consumption footprint (that is, annualised lifetime energy requirements) of major products. Type: Additional Reported: Partial |
N/A | Use of energy causes approximately 13.8% of our total ecological impact. | Use of energy causes approximately 13.8% of our total ecological impact. | Use of energy causes approximately 13.8% of our total ecological impact. |
| EN19 Other indirect (upstream/downstream) energy use and implications, such as organisational travel, product life-cycle management, and use of energy-intensive materials. Type: Additional Reported: Partial |
N/A | Our Ecological Footprint is 17,639 global hectares as measured in 2003. | Our Ecological Footprint is 17,639 global hectares as calculated in 2003 for the 2001-02 year. We will re-calculate in 2006-07. | Our Ecological Footprint is 17,639 global hectares as calculated in 2003 for the 2001-02 year. We will re-calculate in 2006-07. |
| EN20 Water sources and related ecosystem/habitats significantly affected by water use. Type: Additional Reported: Full |
Water is collected from catchments to the north and east of Melbourne and this impacts all downstream hydrology. | Water is collected from catchments to the north and east of Melbourne and this impacts all downstream hydrology. | Water is collected from catchments to the north and east of Melbourne and this impacts all downstream hydrology. | Water is collected from catchments to the north and east of Melbourne and this impacts all downstream hydrology. |
| EN21 annual withdrawals of ground and surface water as a percentage of annual renewable quantity of water available from the sources. Type: Additional Reported: Full |
We do not withdraw ground water. Surface water constitutes 100% of water used. | We do not withdraw ground water. Surface water constitutes 100% of water used. | We do not withdraw ground water. Surface water constitutes 100% of water used. | We do not withdraw ground water. Surface water constitutes 100% of water used. |
| EN23 Total amount of land owned, leased, or managed for production activities or extractive use | Our Altona Treatment Plant is located on approximately 330,000 square metres. | Our Altona Treatment Plant is being upgraded for the production of recycled water. It is located on approximately 330,000 square metres. | The Altona Treatment Plant is being upgraded for the production of a higher quality effluent and recycled water. It is located on approximately 330,000 square metres. | The Altona Treatment Plant is being upgraded for the production of a higher quality effluent and recycled water. It is located on approximately 330,000 square metres. |
| EN24 Amount of impermeable surface as a percentage of land purchased or leased. Type: Additional Reported: Partial |
N/A | Of our Sunshine office complex, 33.4% is impermeable land, as is 3% of our Altona Treatment Plant. We have only included our two major sites. | Of our Sunshine office complex, 33.4% is impermeable land. Approximately 10% of our Altona Treatment Plant is now impermeable land, up from 3% in 2004. |
Of our Sunshine office complex, 33.4% is impermeable land. Approximately 11% of Altona Treatment Plant is now impermeable land, up from 1% in 2004-05 |
| EN25 Impacts of activities and operations on protected and sensitive areas. Type: Additional Reported: Partial |
N/A | Our treatment plant discharges to Port Phillip Bay, which may have a minor impact on Port Phillip Bay (Western Shoreline and Bellarine Peninsula), which is Ramsar listed. | The Altona Treatment Plant discharges to Port Phillip Bay of which parts of the Western Shoreline and Bellarine Peninsula is Ramsar listed. However, the extent of effect of the effluent discharge on infauna at Altona is less than 100 metres of the outfall. Preliminary Environmental Assessments for water supply and sewerage capital projects are required to be conducted at the planning approval stage and/or at the design and construction stage. Emergency Relief Structures works are being undertaken to progressively upgrade the sewerage system in order to contain flows associated with the 1 in 5 year Annual Recurrence Interval (ARI) rainfall event. |
The Altona Treatment Plant discharges to Port Phillip Bay of which parts of the Western Shoreline and Bellarine Peninsula is Ramsar listed. There is minimal attributable, detrimental environmental impact beyond the 100 metre mixing zone. Preliminary Environmental Assessments for water supply and sewerage capital projects are required to be conducted at the planning approval stage and/or at the design and construction stage. Emergency Relief Structures works are being undertaken to progressively upgrade the sewerage system in order to contain flows associated with the 1 in 5 year ARI Rainfall Event |
| EN32 Water sources and related ecosystems/habitats significantly affected by discharges of water and runoff. Type: Additional Reported: Full |
We discharged 5.8 gigalitres of treated effluent into Port Phillip Bay. | We discharged 6.0 gigalitres of treated effluent into Port Phillip Bay. | We discharged 5.8 gigalitres of treated effluent into Port Phillip Bay. | We discharged 5.96 gigalitres of treated wastewater into Port Phillip Bay. |
