1. properties
1.1. COHESION
1.2. ADHESION
1.3. HIGH SURFACE TENSION
1.4. HIGH SPECIFIC HEAT CAPACITY
1.5. HIGH HEAT OF VAPORIZATION
1.6. UNIVERSAL SOLVENT
2. water cycle
2.1. EVAPORIZATION
2.1.1. WATER VAPOR
2.2. SUBLIMATION
2.3. CONDENSATION
2.3.1. CLOUD
2.4. PRECIPITATION
2.4.1. RAIN
2.4.2. SNOW
2.5. DEPOSITION
2.5.1. ICE
2.5.2. SNOW
3. sources of pollution
3.1. SEWAGE
3.2. AGRICULTURE
3.2.1. spread of manure
3.2.2. sheep dip disposal
3.2.3. land ploughing
3.2.4. pesticides and fertilizers
3.3. OIL
3.3.1. loss
3.3.2. spills
3.3.3. disposal
3.4. RADIOACTIVE SUBTANCES
3.4.1. uranium mining
3.4.2. nuclear powerplant
3.4.3. military weapons
3.4.4. universities
3.4.5. hospitals
3.5. DUMPING
4. parameters of quality
4.1. TESTS
4.1.1. PHYSICAL
4.1.1.1. color
4.1.1.2. turbidity
4.1.1.3. odor and taste
4.1.1.4. temperature
4.1.2. CHEMICAL
4.1.2.1. pH
4.1.2.2. BOD
4.1.2.3. toxins
4.1.3. BIOLOGICAL
4.2. TREATMENT
5. H2O
5.1. HYDROGEN
5.2. OXYGEN
6. rehabilitation
6.1. as an individual
6.1.1. reduce plastic consumption
6.1.2. proper disposal
6.1.3. regulate use of pesticides
6.2. as a communty
6.2.1. awareness
6.2.2. conservation projects
6.2.3. nstp
6.3. as a city
6.3.1. proper disposal
6.3.2. implementation of rules
6.3.3. proper sewage treatment
6.3.4. use energy saving utilities
7. laws
7.1. RA 9275
7.1.1. Philppine Clean Water Act
7.1.1.1. water quality management
7.1.1.2. control of pollution
7.2. PD 1067
7.2.1. The Water Code of The Philippines
7.2.1.1. appropriation of water
7.2.1.2. conservation of water resources
7.2.1.3. protection of water resources
7.3. RA 3931
7.3.1. National Water and Air Pollution Control Commission
7.3.1.1. maintain standards of water purity