The Private Water Supplies Regulations (Northern Ireland) 2017 No. 211

SCHEDULE 3 Monitoring for Group A and Group B Parameters

PART 2 Monitoring for Group B Parameters

Sampling

3.—(1) The Department must monitor for a Group B parameter in accordance with this Part.

(2) “Monitoring for a Group B parameter” means sampling for each parameter listed in Schedule 1 (other than parameters already being monitored for Group A parameter monitoring).

Frequency of sampling

4.—(1) Sampling for a Group B parameter must be undertaken at the frequencies specified in Table 4 for those parameters.

TABLE 4

Minimum frequency of sampling for Group B parameters

Volume m3 /day (calculated as averages taken over a calendar year)	Sampling frequency per year
≤ 1000	1
> 1000 ≤ 10,000	1 + 1 for each 3,300 m3/day of the total volume (rounding up to the nearest multiple of 3,300 m3/day)
> 10,000 ≤ 100,000	3 + 1 for each 10,000 m3/day of the total volume (rounding up to the nearest multiple of 10,000 m3/day)
> 100,000	10 + 1 for each 25,000 m3/day of the total volume (rounding up to the nearest multiple of 25,000 m3/day)