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- Water quality 19
- Building 12
- Sewage 6
- Bureaucracy 5
- Water--Purification 5
- Finance 4
- Groundwater 3
- Politics and government 3
- Sewage--Purification 3
- Water-supply 3
- Contamination of environment 2
- Drinking water 2
- Jordan. Sulṭat al-Miyāh 2
- Agriculture 1
- Amman (Jordan) 1
- Baṣrah (Iraq) 1
- Canals 1
- Dams 1
- Dead Sea (Israel and Jordan) 1
- Demography 1
