A business water project should start with a simple balance: how much water enters the site, where it is used and which streams leave it. Separate avoidable consumption from water that might be suitable for treatment and reuse.
Collect the information you already have
Gather water bills, production quantities, operating hours, meter readings and available laboratory results. Record seasonal changes and the points where water is used or lost. Unknown quantities can be identified as unknown; they should not be replaced with guessed measurements.
Separate the streams and intended uses
Industrial wastewater, greywater and other process streams can require different treatment. Describe contaminants and the proposed destination of the treated water. Water reuse is a project-specific design and approval question, not a promise attached to a filter.
Ask for a complete proposal
Ask the provider to identify the design assumptions, intended water quality, monitoring, maintenance and handling of treatment residues. Compare equipment, installation and ongoing operation together. Establish who will operate the system and how performance will be checked.
Explore greywater recycling or industrial wastewater solutions (Hebrew).