Solution providers should read the requirement ‘Understand sampling’ in the Solution Provider Toolkit that informs them how to calculate the average flow rate.
In summary
Solution Providers must evaluate and test wastewater based on a threshold flow rate of 15m3/day . To verify whether a supplier falls above or below this baseline, the laboratory must compute the average flow rate using the formula:
Flow rate (m³/day) = Annual wastewater generated in m³
Total number of working days per year