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…