Lesson Plan 16
Time: 30 min
Title: Water Supply, Quality and Source Protection
Learning Expectations:
1. Identify different water sources
2. Evaluate a source selection criteria
3. Identify different sources protection methods
Materials Required:
Topics and Key Points
Learning Strategies
1. Introduction
 Often several water sources are used in combination
 Ground, surface and rain water sources
2.
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Ground water
Most of the world’s drinking water
Generally the deeper the well the better the water
Natural contaminants (fluoride, arsenic, etc.)
Polluted by human activities
Watershed
Aquifer
PPT
(Day
3-1)
Time
(min)
5
10

Refer back to water
cycle
3. Surface water
 Usually low quality water (easily contaminated)rivers, streams and creeks
 Springs- often a primary source of water
4. Rain water
 Usually a source of high quality water (rooftop)
 Rooftop, ground, rock, etc.
5.
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Source selection criteria
Water quality
Affordability
Adequacy
Reliability
Convenience
Other?
5
6.
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7.
Source protection
Delineate source
Know potential sources of contamination
Determine the susceptibility
Notify and involve the community
Take action and develop a plan
Discuss different protection technologies
Review
5
Reflection:
5