http://www.legislation.gov.uk/nisr/2015/363/contents/made
The Water Supply (Water Quality) (Amendment) Regulations (Northern Ireland) 2015
en
Government Printer for Northern Ireland
2016-05-26
WATER AND SEWERAGE
Regulation 2 amends the Water Supply (Water Quality) Regulations (Northern Ireland) 2007, as amended, to include an additional analytical parameter (radon), with associated threshold values and sampling frequency. In addition the regulation updates sampling frequencies for tritium and indicative dose (ID).