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GEMS/Water Questionnaires

Explore methods for assessing global water quality, comparing costly monitoring labs to collaborative data sharing. Access the GEMStat database for water quality information worldwide, facilitating statistical analyses and promoting data comparability. Ensure up-to-date and comprehensive data collection through the GEMS/Water Programme, supporting a network of participating countries and organizations. Discover trends, impacts, and fluxes in water quality to enhance environmental statistics and decision-making processes.

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GEMS/Water Questionnaires

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  1. GEMS/Water Questionnaires Intersecretariat Working Group on Environment Statistics, International Work Session on Water Statistics, Vienna, June 20-22, 2005

  2. HOW TO ASSESS GLOBAL WATER QUALITY? • There are two approaches: • Establish monitoring laboratories and staff worldwide to operate a global programme – this would be exorbitantly expensive and impossible at the present time. • Create a network of participating countries that provide data to a central global database. 5000000 Faecal Coliform (No./100 ml MPN) 0 1979 - 2002 Oxygen Dissolved (mg/L O2) Ahmadabad 1979 - 2002 600 Biochemical Oxygen Demand (mg/L O2) 0 1979 - 2 002

  3. GEMS/Water Data Collection • Voluntary – from national WQ programmes but also universities and other organizations – non-aggregated. • Living database. • Do not control type of data, analytical methods, frequency of analysis or submission to GEMS/Water. • Have three classes of stations: trend, impact and flux. • Historically data has been very classical but moving to collect ‘newer’ data including biological data.

  4. Global Water Quality Network

  5. Database Access & Data Distribution New online water quality database GEMStat –launched on March 22nd, World Water Day www.gemstat.org -- searchable • Station(s) selection • Time period • Parameter(s) selection • Statistical Analysis • promote access to information worldwide • promote interoperability and comparability of datasets • as up-to-date and comprehensive as possible

  6. UNEP GEMS/Water Programme Aare River at Brugg Figure 1: Station photograph Figure 2: Watershed Region Figure 3: Geographical Location

  7. UNEP GEMS/Water Programme Aare River at Brugg

  8. UNEP GEMS/Water Programme Thank You www.gemswater.org Canada, UNEP Nairobi

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