240
R. Orthofer and W. Loibl
often occurs around the human settlements might make an important contribution
to nitrogen leakage.
o Study Region
/'0-../ Rivers and wadis
N03 conc. in springs
nO data
.0.
0 - 20 mg/l
o 20- 40 mg/l
.. 40 - 60 mgll
• 60 - 80 mg/l
+ 70 - 100 mg /l
• 100 - 145 mg/l
Domestic water usage
< 10.000 CM fyr
o
< 50.000 CMfyr
o < 100.000 CM/yr
o < 250.000 CMJyr
o < 500.000 CM /yr
o < 1 Mio CM/yr
Jordan
River
Fig. 4. Locations of (untreated) domestic wastewater disposal in the valley floor and nitrate
concentration in spring water. Numbers refer to measured nitrate concentrations
3.1.3 Wastewater from Industry and Tourism
Nitrogen pollution from industry is low. However, industrial wastewaters are
important sources for pollution from compounds other than nitrogen, notably
hydrocarbons and solvents which cause toxic pollution for soil, groundwater, and
for the population.
Pollution from tourism is not yet a problem, but waste generation and sewage
from tourism could contribute to local pollution hot spots in the future, if
wastewaters and solid wastes are improperly disposed of.