The
World
Water
Quality
Assessment
WWQA – Link to UNEP Live
A preliminary concept of a ‚dash board‘
TheWorld Water Quality AssessmentOur motivation
• Public information
• Platform for direct communication with stakeholders
- Possibility for interaction?
TheWorld Water Quality Assessment
Water WWQA
TheWorld Water Quality Assessment
Causes of Water Pollution
Water Quality
Water Quantity
Hot Spots
Profile
Others…
Overview/start
TheWorld Water Quality Assessment
MoroccoGeneral information (short) Area
Population (density)
…
Water issues (e.g.) No. of Lakes/Reservoirs
No. of Rivers/River Basins
Transboundary Waters
…
Waste Water information No. of WWTP
Population connected
…..
Etc. …
Profile
TheWorld Water Quality AssessmentCauses of water pollution
…incl. short explanations
TheWorld Water Quality Assessment
Water Availability [m³/s]
< 10
10 - 3
0
30 - 5
0
50 -
100
> 100Water Availability [mm]
< 25
25 - 5
050
-75
75 - 1
50 > 150
Link to GRDC ?
Water quantity
TheWorld Water Quality Assessment
77006, Sebou river
77001, Sebou river
77008, Oum er Riba River
Water quality
Link to GEMS ?
TheWorld Water Quality Assessment
• Point source pollution provides major contribution, in particular during “dry season”
• High BOD5 in-stream concentrations in August
• Most of the high polluted rivers flow into the sea, i.e. carrying many tons of BOD loads into the oceans
• E.g. Egypt, 48% of households are connected to sewage systems, 44% of the treatment facilities have
secondary treatment but >50% of treatment plants do not work properly
Hot spots of water pollution -Modelling
BOD5 instream conc. (Feb.2010)
BOD5 loadings (2010)
TheWorld Water Quality AssessmentOthers
e.g. useful links:
WP Guidelines
WP Waste Water
WP Compendium
UN Water
Reports
Others…