The Private Water Supplies (Wales) Regulations 2017

PART 3Minimum frequency for both monitoring for Group A parameters and monitoring for Group B parameters for water put into bottles or containers

Volumea of water produced in bottles or containers each day (m3)Monitoring for Group A parameters: number of samples per yearMonitoring for Group B parameters: number of samples per year
≤1011
˃ 10 ≤ 60121
˃ 601 for each 5 m3/day of the total volume (rounding up to the nearest multiple of 5 m3/day)1 for each 100 m3/day of the total volume (rounding up to the nearest multiple of 100 m3/day)
a The volumes are calculated as averages taken over a calendar year.