- The Water and Sewerage Services (Northern Ireland) Order 2006
- The Water and Sewerage Services (Miscellaneous Provisions) (Northern Ireland) Order 2006
- Water and Sewerage Services (Transfer Date) Order (Northern Ireland) 2007
- The Water and Sewerage Charges Scheme Regulations (Northern Ireland) 2007
- The Water and Sewerage Services (Successor Company) Order (Northern Ireland) 2007
- The Water Supply (Water Quality) Regulations (Northern Ireland) 2007
- The Water and Sewerage Services (2006 Order) (Commencement No. 1 and Transitional Provisions) Order (Northern Ireland) 2007
- The Urban Waste Water Treatment Regulations (Northern Ireland) 2007
- The Water Industry (Determination of Turnover for Penalties) Order (Northern Ireland) 2007
- The Water Supply (Water Fittings) Regulations (Northern Ireland) 2009
- Water Supply (Water Quality) (Amendment) Regulations (Northern Ireland) 2009
- The Water Supply (Water Quality) (Amendment) Regulations (Northern Ireland) 2010
- The Water Supply (Domestic Distribution Systems) Regulations (Northern Ireland) 2010
- Water and Sewerage Services (Amendment) Act (Northern Ireland) 2010
- Water and Sewerage Services (Amendment) Act (Northern Ireland) 2013
- The Water Meters Regulations (Northern Ireland) 2016
- Water and Sewerage Services Act (Northern Ireland) 2016
- The Grants to Water and Sewerage Undertakers Order (Northern Ireland) 2017
- The Drainage (Environmental Impact Assessment) Regulations (Northern Ireland) 2017
If you are unable to find the piece of legislation you require, please visit www.legislation.gov.uk.