| Slide 1 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Links, communalities and differences between SEEAW and Eurostat/OECD-JQ and UNSD Water Questionnaire MEDSTAT II Environment Sector / UNESCWA / UNSD Joint Sub-regional Training Session on the System of Environmental-Economic Accounting for Water (SEEAW) Amman, March 10-13, 2008 Michael Nagy

| Slide 2 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Table of contents History of environment/water statistics Overview on statistical tables: UNSD-Water Questionnaire 2006 Eurostat/OECD Joint Questionnaire on Inland Waters SEEAW Standard Tables and Supplementary Tables Links and communalities between the 3 questionnaires – in the order of UNSD-WQ tables Conclusions

| Slide 3 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 History of environment/water statistics Early 1970s: Environment statistics compiled in some countries (regulatory and administrative purposes) 1980s: OECD started data collection through questionnaires 1990s: Environmental-Economic Accounting started 1993: SEEA SEEA 2003 (revised version) 2007: SEEAW as interim standard

| Slide 4 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-Water Questionnaire: Tables

| Slide 5 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Eurostat/OECD-JQ IW: Tables

| Slide 6 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 SEEAW Tables Standard Tables: Standard physical supply and use tables (PSUT) Emission accounts Hybrid supply and use tables Asset accounts Supplementary tables: PSUT: breakdown of use-types and returns (e.g. mining water, irrigation water, cooling water,…) Flows of water within the economy Emission accounts: Emission breakdown to surfacewater / groundwaters; amounts of sludge Quality accounts Social indicators: e.g. sustainable access to improved water sources

| Slide 7 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W1 – Renewable Freshwater Resources

| Slide 8 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Hydrological Cycle (Eurostat / OECD)

| Slide 9 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W1 – Renewable Freshwater Resources Corresponds to Eurostat/OECD-JQ T1 – Freshwater resources +/- identical variables slightly different terminology, e.g.: Inflow of surface and groundwaters (UNSD)  Actual external inflow (Eurostat/OECD) Outflow of surface and groundwaters (UNSD)  Total actual outflow (Eurostat/OECD) UNSD-WQ: less variables Eurostat/OECD: Supplementary tables on inflow and outflow Link to SEEAW-Table: asset accounts Increases in stocks can be taken from W1 (or T1): Precipitation, Inflows Decreases in stocks can be taken from W1 (or T1): Outflow, Actual evapotranspiration Water abstraction can be taken from UNSD-WQ W2 (Net water abstraction) UNSD and Eurostat/OECD deal with renewable water resources only, no stocks

| Slide 10 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W2 – Water Use Balance

| Slide 11 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W2 – Water Use Balance Water flow schema of Eurostat/OECD-JQ on Inland Waters

| Slide 12 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W2 – Water Use Balance Corresponds to Eurostat/OECD-JQ T Water Use Balance Identical concept: Consumptive water use = Freshwater abstraction – leakages – wastewater generation Water consumption = Consumptive water use + Discharges to the sea Links to SEEAW PSUT (Columns „Total use“, „Total supply“) No disaggregation for different industries in W2 UNSD-WQ data can be used to compile total abstraction and total returns slightly different concept regarding re-used water Main difference:Water used for hydropower is NOT COVERED by UNSD/Eurostat/OECD – Water Questionnaires

| Slide 13 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W3 – Freshwater abstraction + disaggregation of same variables for surface water and groundwater

| Slide 14 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W3 – Freshwater abstraction Corresponds to Eurostat/OECD-JQ T2 Annual freshwater abstraction by source Same structure and variables Eurostat/OECD has additional variables: Breakdown of cooling water of manufacturing industry Supplementary table: Other sources of water Links to SEEAW physical use table: Similar breakdown into industries and households UNSD-WQ data can be used to complete part „Abstraction from the environment“

| Slide 15 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W4 – Water supply industry (ISIC 41  ISIC 36)

| Slide 16 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W4 – Water supply industry (ISIC 41  ISIC 36) Corresponds to Eurostat/OECD-JQ T Water use by supply category, part „Public water supply“ and „Losses during transport“: Eurostat/OECD-JQ has breakdown for cooling water of manufacturing industries Links to SEEAW PSUT: Use data to compile figures for „Use of water received from other economic units“ Note: Flows within ISIC 41 (36) are not covered by UNSD/Eurostat/OECD Link to SEEAW social indicators: Consider data on „Population supplied“ in the compilation of „sustainable access to an improved water source“

| Slide 17 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W5 – Total water use

| Slide 18 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W5 – Total water use No directly corresponding table in Eurostat/OECD- JQ: Self supply (T3.1) ≈ Total water use (W5) - Freshwater abstraction (W3) Eurostat/OECD-JQ has a breakdown for cooling water of manufacturing industries Link to SEEAW PSUT: Equal to total use of water per industry (use table) Note: Flows within same industries are not covered by UNSD/Eurostat/OECD

| Slide 19 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W6 – Wastewater treatment facilities

| Slide 20 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W6 – Wastewater treatment facilities Corresponds to: Eurostat/OECD-JQ T 5 – Treatment capacity of wastewater treatment plants in terms of BOD Eurostat/OECD-JQ T 6 – Sewage sludge production and disposal Differences: UNSD-WQ: effluent BOD is missing Eurostat/OECD-JQ additionally: tertiary treatment, more about independent treatment (e.g. capacity and effluent BOD), concept of „Other wastewater treatment“, sludge disposal routes 1 link to SEEAW tables: Sewage sludge quantity

| Slide 21 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W7 – Population connected to wastewater treatment

| Slide 22 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 UNSD-WQ: W7 – Population connected to wastewater treatment Corresponds to Eurostat/OECD-JQ T4 – National population connected to wastewater treatment plants. JQ more detailled: Tertiary treatment Other wastewater treatment Link to SEEAW: Data should be considered in the calculation of „access to improved sanitation“

| Slide 23 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Eurostat/OECD-JQ Table 7: Generation and discharge of waste water

| Slide 24 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Eurostat/OECD-JQ Table 7: Generation and discharge of waste water Covers all wastewater flows from generation to discharge per type of industry Parameters: Volume BOD N P Suspended solids Heavy Metals No corresponding UNSD-WQ table Can be used as basis for calculation of SEEAW Emission Accounts

| Slide 25 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 CONCLUSIONS I UNSD-WQ and Eurostat/OECD-JQ use identical concepts: Can be used complementary to provide a global picture Eurostat/OECD-JQ is more disaggregated Eurostat/OECD-JQ deals additionally with industrial wastewater and non-point sources Eurostat/OECD-JQ deals additionally with WW quality aspects Some terms are slightly different Main difference: UNSD Definition of wastewater includes cooling water whereas Eurostat/OECD-JQ excludes cooling water from its wastewater definition

| Slide 26 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 CONCLUSIONS II UNSD-WQ/Eurostat/OECD-JQ versus SEEAW: SEEAW follows strictly ISIC classification; UNSD- WQ/Eurostat/OECD-JQ relate more to ownership (e.g. public water supply, urban wastewater treatment) Concept „total supply“ in SEEAW is different from „supply“ in UNSD-WQ/Eurostat/OECD-JQ SEEAW includes the use of water in hydroelectric power generation SEEAW concept of „soil water“ does not exist in the other questionnaires No economic information in UNSD-WQ/Eurostat/OECD-JQ

| Slide 27 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Conclusions III UNSD-WQ and Eurostat/OECD-JQ are an important data basis for compilation of SEEAW Data have to be used carefully, since not all definitions and concepts are harmonized yet Questionnaires are currently brought in line (step by step): Terminology Definitions Concepts and classifications

| Slide 28 MEDSTAT II Environment Sector / UNESCWA / UNSD, Amman March 2008 Thank you very much for your attention!