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In industry, effective ways to reduce the amount of water requiring treatment is:

  1. Not treat water that appears low in contaminants

  2. Modify the manufacturing process

  3. Install flow meters

  4. Practice flow equalization

The correct answer is: Modify the manufacturing process

Modifying the manufacturing process is a highly effective way to reduce the amount of water requiring treatment. This approach involves assessing and redesigning specific aspects of the production processes to minimize water use and potentially lower the contaminants generated. By implementing changes such as using less water-intensive methods or recycling water within the system, industries can significantly decrease their overall water consumption and the subsequent volume requiring treatment. This not only leads to reduced treatment costs but also promotes more sustainable operational practices. Industries can benefit from innovative technologies or procedural changes that enhance efficiency and environmental performance, making it a strategic choice for water conservation and management. The other options may not contribute as effectively to the overall reduction of water requiring treatment.