Guides · ISEF category
Environmental Engineering
ISEF category ENVS · difficulty for high-school students: medium
Engineering solutions to environmental problems: water treatment, air purification, soil remediation, waste management, pollution monitoring and control.
How it's judged
ISEF scores 100 points across five criteria:
- Creative Ability: 30 pts
- Scientific Thought: 30 pts
- Thoroughness: 15 pts
- Skill: 15 pts
- Clarity: 10 pts
What wins
- Novel biosorbent materials for heavy metal removal from water
- Photocatalytic degradation of emerging contaminants (pharmaceuticals, microplastics)
- Constructed wetland performance optimization for wastewater treatment
- Low-cost sensor system for real-time pollution monitoring in underserved communities
Common mistakes
- Testing filtration without measuring removal efficiency quantitatively
- Not testing at environmentally relevant pollutant concentrations
- Ignoring secondary effects (e.g., the filter material leaching its own contaminants)
What you'll need
Basic water chemistry test kits or spectrophotometer. Advanced work (ICP-MS for heavy metals) requires university environmental lab.
Ethics & approvals
Human-subjects (IRB) approval is usually not required for this category. Vertebrate-animal (IACUC) approval is usually not required.
The novelty bar
A new material, a new treatment approach, or a novel parameter optimization. Generic 'which filter removes the most lead' without a hypothesis about mechanism is not competitive.
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