1 Emission Accounts Training Session on the System of Environmental-Economic Accounting for Water (SEEAW) for the Arab Gulf Countries August 25-28, 2008.

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Water Accounting - Introduction
Presentation transcript:

1 Emission Accounts Training Session on the System of Environmental-Economic Accounting for Water (SEEAW) for the Arab Gulf Countries August 25-28, 2008 UN House- Beirut-Lebanon Michael Vardon (United Nations Statistics Division) Michael Nagy (Austrian Environment Agency)

Outline What do emission accounts measure?What do emission accounts measure? ConceptsConcepts The standard tables of SEEAWThe standard tables of SEEAW Example of AustriaExample of Austria Policy uses and indicatorsPolicy uses and indicators

What do emission accounts measure? Emission accounts describe, in physical units, flows of pollutants added to wastewater as a result of production and consumption, and flowing into water resources either directly or through the sewage network.

Why compiling emission accounts Emission accounts provide information on Which activities are responsible for the emissionWhich activities are responsible for the emission How much is being emittedHow much is being emitted Where is being emittedWhere is being emitted They are useful for designing policies aimed at reducing pressure on the environment

Why compiling emission accounts Since they are linked to the economic accounts (via the hybrid tables), they allow for the formulation of cost-effective policies aiming at reducing emissionsthe formulation of cost-effective policies aiming at reducing emissions the evaluation of the economic impacts of policies aiming at reducing emissionsthe evaluation of the economic impacts of policies aiming at reducing emissions

Basic concepts and definitions Emissions to water are defined as direct release of a pollutant to water as well as the indirect release by transfer to an off-site wastewater treatment plant.Emissions to water are defined as direct release of a pollutant to water as well as the indirect release by transfer to an off-site wastewater treatment plant. The SEEAW focuses only on the release of substances into water resources through the (direct and indirect) discharge of wastewater into water resources.The SEEAW focuses only on the release of substances into water resources through the (direct and indirect) discharge of wastewater into water resources. The direct discharge of heavy metals and hazardous waste not through wastewater is not covered in the water emission accounts but in the waste accounts.The direct discharge of heavy metals and hazardous waste not through wastewater is not covered in the water emission accounts but in the waste accounts.

Wastewater and pollutants pathways Sewerage Other industries AgricultureHouseholds Rest of the world Water resources and the sea

Basic concepts and definitions Point source emissions are those emissions for which the geographical location of the discharge of the wastewater is clearly identified (for example, emissions from wastewater treatment plants, power plants, other industrial establishments) They are generally easier to measure since the point of emission to the water resources is clearly identified

Basic concepts and definitions Non-point (or diffuse) sources of pollution are sources without a single point of origin or a specific outlet into a receiving water body. Pollutants are generally carried off the land by storm-water run-off or may be the result of a collection of individual and small scale polluting activities which for practical reasons cannot be treated as point sources of pollution. The commonly used categories for non-point sources include agriculture and urban areas.

Scope of emission accounts Include:Exclude: Point sources: Pollutants added to wastewater Point sources: Discharges of heavy metal and hazardous wastes not contained in wastewater (included in the SEEA waste accounts) Pollutants resulting from in-situ use (e.g. navigation, fishing, etc.) Non-point sources: Urban runoff Irrigation water and rain-fed agriculture Non-point sources: All non-point sources except for urban runoff, irrigation water and rain-fed agriculture (included in the quality accounts)

Basic concepts and definitions Gross emissions are the pollutants added to the water by an activity, assessed at the point where the wastewater leaves the activity's site (or the dwelling, in the case of households). Net (or final) emissions correspond to the pollutants discharged into water resources after treatment. Net emissions= gross emissions if there is no treatment of wastewater

Emission accounts Industries, households and the Rest of the world are identified by columns They record the pollution added to water by an economic unit (and not the total pollution discharged with wastewater)

Emission accounts Sewerage Other industries Agriculture Households Rest of the world Water resources and the sea

Emission accounts by ISIC 37 Now we can reallocate the emissions by ISIC 37 to the activity responsible for the emission 2

Emission Accounts

Urban runoff Urban run-off: that portion of precipitation on urban areas that does not naturally percolate into the ground or evaporate, but flows via overland flow, underflow, or channels or is piped into a defined surface water channel or a constructed infiltration facility. It is generally highly polluted and there is an increasing awareness in the potential danger of discharging it into the environment without treatment.

Urban runoff Emissions to water in the urban runoff are allocated to the Sewerage industry, ISIC 37 since this is the economic unit responsible for its collection and discharge

Reallocation of emissions Simplest method: Use global abatement rate (the assumption is that there is the same treatment capacity)Use global abatement rate (the assumption is that there is the same treatment capacity)Otherwise Use information of the treatment typeUse information of the treatment type

Supplementary information (1) Emission to water resource: Surface water (and further disaggregation into artificial reservoirs, lakes, rivers etc.)Surface water (and further disaggregation into artificial reservoirs, lakes, rivers etc.) GroundwaterGroundwater Sludge production Total sewage sludge produced (vol.)Total sewage sludge produced (vol.) Load in total sewage sludgeLoad in total sewage sludge

Diffuse emissions European Harmonised Procedures for Quantification of Nutrient Losses from Diffuse Sources - EUROHARPEuropean Harmonised Procedures for Quantification of Nutrient Losses from Diffuse Sources - EUROHARP Web:

Waste Water Emissions in Austria

Information needs To answer national policy relevant questions:To answer national policy relevant questions: Status, trends, forecasts on emissions and pollution controlStatus, trends, forecasts on emissions and pollution control Fulfillment of international reporting exercises:Fulfillment of international reporting exercises: EU-Urban Waste Water Treatment DirectiveEU-Urban Waste Water Treatment Directive EU-Water Framework DirectiveEU-Water Framework Directive EPER  PRTREPER  PRTR Eurostat / OECD Joint Questionnaire on Inland WatersEurostat / OECD Joint Questionnaire on Inland Waters

Policy demands “Classical” policy questions:“Classical” policy questions: What is the % of population connected to collecting system and urban waste water treatment plants?What is the % of population connected to collecting system and urban waste water treatment plants? Is pollution from urban areas and industry increasing or decreasing?Is pollution from urban areas and industry increasing or decreasing? New Policy questionsNew Policy questions Mostly related to economic considerations (more about these later)Mostly related to economic considerations (more about these later)

“Classical” indicators Population connected to collecting system and waste water treatment plantsPopulation connected to collecting system and waste water treatment plants Waste water quantities (m³) discharged (urban / industry)Waste water quantities (m³) discharged (urban / industry) Organic pollutants (BOD / COD) discharged (urban / industry)Organic pollutants (BOD / COD) discharged (urban / industry) Nutrients (Nitrogen and Phosphorus) discharged (urban / industry)Nutrients (Nitrogen and Phosphorus) discharged (urban / industry) (Dangerous substances)(Dangerous substances)

Characteristics of “classical” waste water indicators Focus on point sources discharging into surface watersFocus on point sources discharging into surface waters Policy relevant questions were related to the facts that:Policy relevant questions were related to the facts that: pollution of surface waters stemmed mainly from point sourcespollution of surface waters stemmed mainly from point sources big potential for improvement of treatment technologies and production processesbig potential for improvement of treatment technologies and production processes Indicators have been the basis for regulations on limitation of discharged pollutants (production sector specific), investments, subsidies and other measuresIndicators have been the basis for regulations on limitation of discharged pollutants (production sector specific), investments, subsidies and other measures Indicators have been used for monitoring of progress and assessment of achievement of policy goalsIndicators have been used for monitoring of progress and assessment of achievement of policy goals

Indicator: connections to sewerage

Indicator: Treatment efficiencies and discharges

New policy questions Which measures (as e.g. required according to EU- WFD) are the most cost-effective? What are the costs to reduce 1 unit of a pollutant discharged from agriculture/industry/urban areas....? What are the socio-economic costs of polluted waters? Health of society Economic activities dependent from clean water: e.g. fishery, drinking water production, tourism,... Other uncertain effects of loss of healthy environment

New waste water indicators Better consideration of diffuse pollution  to consider ALL sources of pollutionBetter consideration of diffuse pollution  to consider ALL sources of pollution Industry aggregation  link with economic indicatorsIndustry aggregation  link with economic indicators GoalsGoals identify cost-efficient measuresidentify cost-efficient measures assess socio-economic effectsassess socio-economic effects monitor effects of changed production- technologiesmonitor effects of changed production- technologies

COD emissions, direct discharges COD Manufacture of pulp, paper and paper products (21) Manufacture of chemicals and chemical products (24) Sewage and refuse disposal, sanitation and similar activities (90) Households

Share of COD emissions

Nitrogen emissions, direct discharges Nitrogen (total) Agriculture, hunting and related service activities (01) Forestry (02) Households

Share of Nitrogen emissions

Chrome emissions. direct discharges Chrome Manufacture of basic metals (27)Manufacture of other non-metallic mineral products (26) Manufacture of textiles (17) Leather (19)

Share of Chrome emissions

Data collection A lot of data collections exists:A lot of data collections exists: National AccountsNational Accounts National reports on the status of the environmentNational reports on the status of the environment International reporting obligations (WFD, UWWTD, EPER, etc.)International reporting obligations (WFD, UWWTD, EPER, etc.) Austrian Emissions Inventory: updated once a year with data from regional authorities (for each individual “significant” discharger)Austrian Emissions Inventory: updated once a year with data from regional authorities (for each individual “significant” discharger)

To further develop emission accounts in Austria Demonstrate usefulness to policy makers (e.g. for purposes of EU-WFD) Demonstrate usefulness to policy makers (e.g. for purposes of EU-WFD) Use already existing data collections as far as possible (usually legally binding) Use already existing data collections as far as possible (usually legally binding) Modify data collections (and their legal basis) where this is necessary (coverage, sector-specific aggregation) Modify data collections (and their legal basis) where this is necessary (coverage, sector-specific aggregation)

Outlook for Austria Emission accounts project :Emission accounts project : Use of data of the Austrian Emission Inventory on Surface Waters (developed according to EU-WFD, covers “significant” point sources and diffuse sources) for NAMEA-Water Emissions ( data)Use of data of the Austrian Emission Inventory on Surface Waters (developed according to EU-WFD, covers “significant” point sources and diffuse sources) for NAMEA-Water Emissions ( data) Develop methodology for consistent time-series based on WFD-dataDevelop methodology for consistent time-series based on WFD-data Overall goal: Regular update on the basis of WFD-dataOverall goal: Regular update on the basis of WFD-data

Conclusions Emission accounts are addressing new policy-relevant questionsEmission accounts are addressing new policy-relevant questions Existing data collection systems may contain useful information (e.g. Emissions Register)Existing data collection systems may contain useful information (e.g. Emissions Register) May need to set-up specific data collectionsMay need to set-up specific data collections Promotion of usefulness of (emission) accounts is very important. They will aide:Promotion of usefulness of (emission) accounts is very important. They will aide: Understanding of the costs and benefits of measuresUnderstanding of the costs and benefits of measures discussion with different stakeholders (e.g. agriculture versus industry as polluters of waters)discussion with different stakeholders (e.g. agriculture versus industry as polluters of waters) monitoring of environmental efficiencymonitoring of environmental efficiency definition of policy goalsdefinition of policy goals

Contact details Michael Vardon Adviser on Environmental-Economic Accounting United Nations Statistics Division New York USA Room DC Phone: Fax: Michael Nagy Competency Center for Data Management & Reporting Umweltbundesamt Austria (Federal Environment Agency) Spittelauer Laende Vienna Phone: