Controlling Water Quality
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
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Clean Water Act 1972
1.
2.
3.
4.
5.
Established water quality standards
System for ID’ing point sources
Pretreatment for industry
Federal funding for sewage treatment
Provided for enforcement
 Worked well for point sources
 Nonpoint sources still a problem
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
1.
2.
3.
4.
5.
Remove lead from gasoline
Reduce road salting
Decrease erosion
Banning phosphates in detergents
Reduce fertilizer use, etc.
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
1.
2.
3.
4.
Stormwater treatment
Reduce clearcutting
Preserve wetlands
Better construction practices
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
Water hyacinths absorb arsenic
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Solutions
1. Legislation
2. Source Reduction
3. Improved Land Use
Practices
4. Remediation
5. Sewage Treatment
West Point Treatment Plant, Seattle
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Sewage in
King County
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