| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | Order | modified by S.I. 2019/289, reg. 5, Sch. 3 (as amended) | The Waste (Amendment) (EU Exit) Regulations (Northern Ireland) 2020 | 2020 No. 284 | reg. 3(3)(5) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(2)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words repealed | The Waste (Amendment) (Northern Ireland) Order 2007 | 2007 No. 611 | Sch. | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste Management Strategy Regulations (Northern Ireland) 2009 | 2009 No. 178 | reg. 2(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words substituted | The Waste Management Strategy Regulations (Northern Ireland) 2009 | 2009 No. 178 | reg. 2(3) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words omitted | The Companies Act 2006 (Consequential Amendments, Transitional Provisions and Savings) Order 2009 | 2009 No. 1941 | Sch. 1 para. 171 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 3(2)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words substituted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 3(2)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words omitted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 3(2)(c) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Food Waste Regulations (Northern Ireland) 2015 | 2015 No. 14 | reg. 2(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Hazardous Waste (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 238 | reg. 2(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Hazardous Waste (Amendment No. 2) Regulations (Northern Ireland) 2015 | 2015 No. 288 | reg. 2(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste (Amendment) Regulations (Northern Ireland) 2016 | 2016 No. 95 | reg. 2(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | word substituted | The Waste Regulations (Northern Ireland) 2019 | 2019 No. 240 | reg. 4 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(2)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words substituted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(2)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(2)(c)(i) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words inserted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(2)(c)(ii) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words omitted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(2)(d) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(2) | words substituted | Environment Act 2021 | 2021 c. 30 | s. 71(1) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(3) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(2)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(4)(5)(9) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(6) | omitted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 3(2)(d) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(7) | words inserted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(3) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 2(7A)(7B) | inserted | The Waste (Circular Economy) (Amendment) Regulations (Northern Ireland) 2020 | 2020 No. 285 | reg. 2(4) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 3(1)(2)art. 3(3)(b)(c)(4)(5) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 3(3)(a)(6) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(1)(a)(b)(5) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(1)(a)(b) | excluded | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 29(1) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(2)-(4)(6)-(9) | coming into force | The Waste and Contaminated Land (1997 Order) (Commencement No. 7) Order (Northern Ireland) 2003 | 2003 No. 489 | art. 2 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(2)(2A) | substituted for reg. 4(2) | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(3)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(7)(b) | repealed | The Waste (Amendment) (Northern Ireland) Order 2007 | 2007 No. 611 | art. 3(1) Sch. | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(8) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(3)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(8)-(11) | substituted for art. 4(8)-(10) | The Waste (Amendment) (Northern Ireland) Order 2007 | 2007 No. 611 | art. 4(2) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(9) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(3)(c) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4(10) | inserted | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(3)(d) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 4A | inserted | Waste and Contaminated Land (Amendment) Act (Northern Ireland) 2011 | 2011 c. 5 | s. 1 | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(1) | words inserted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 4(1)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(1)(ab) | inserted | The Food Waste Regulations (Northern Ireland) 2015 | 2015 No. 14 | reg. 2(3)(a) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(1)(c)(i) | word deleted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 4(1)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(1)(c)(ii) | word inserted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 4(1)(c) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(1)(c)(iii) | inserted | The Waste Regulations (Northern Ireland) 2011 | 2011 No. 127 | reg. 4(1)(d) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(2A) | inserted | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(4) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(2B)-(2F) | inserted | The Food Waste Regulations (Northern Ireland) 2015 | 2015 No. 14 | reg. 2(3)(b) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(3) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(5) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(4)(5) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(6) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(7) | words substituted | The Food Waste Regulations (Northern Ireland) 2015 | 2015 No. 14 | reg. 2(3)(c) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(8) | text amended | The Waste Management Regulations (Northern Ireland) 2006 | 2006 No. 280 | reg. 2(7) | Yes | |
| The Waste and Contaminated Land (Northern Ireland) Order 1997 | 1997 No. 2778 | art. 5(8) | words inserted | The Food Waste Regulations (Northern Ireland) 2015 | 2015 No. 14 | reg. 2(3)(d)(i) | Yes | |