| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2018 | £60,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2018 | £40,000 |
| Thompson Site Services Ltd | | | environmental violation | 2017 | £40,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2017 | £40,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2017 | £30,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2017 | £30,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2018 | £20,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2016 | £20,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | water pollution violation | 2018 | £16,500 |
| Tullyroan Oval Ltd | | | environmental violation | 2011 | £16,000 |
| Fermanagh Properties Ltd | | | Environmental Violation | 2018 | £15,000 |
| Fermanagh Properties Ltd | | | environmental violation | 2017 | £15,000 |
| Northstone (NI) Ltd | CRH PLC | building materials | environmental violation | 2014 | £15,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2014 | £13,000 |
| R Heatrick Ltd | | | environmental violation | 2011 | £9,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2017 | £8,250 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2017 | £8,250 |
| Asda Stores Ltd | EG Group | retailing | environmental violation | 2019 | £7,500 |
| Caterpillar (NI) Ltd | Caterpillar Inc. | heavy equipment | environmental violation | 2016 | £7,500 |
| Bradmount Ltd | | | environmental violation | 2010 | £7,500 |
| Tyre Disposal Service Ltd (TDS) | | | environmental violation | 2010 | £7,500 |
| Yolk Folk Egg Products Ltd | | | Environmental Violation | 2023 | £7,000 |
| Benburb Bramleys Limited | | | environmental violation | 2013 | £7,000 |
| Portadown Recycling & Skip Hire Ltd | | | environmental violation | 2010 | £7,000 |
| Domestic Sheepskins Ltd | | | Environmental Violation | 2021 | £6,000 |
| F McFarland&Co Ltd | | | Environmental Violation | 2022 | £6,000 |
| Transco Waste Ltd | | | environmental violation | 2013 | £6,000 |
| BJ Trading | | | Environmental Violation | 2020 | £5,500 |
| BLK BOX Fitness Ltd | | | Environmental Violation | 2023 | £5,000 |
| Braidwater Ltd | | | Environmental Violation | 2018 | £5,000 |
| ISL Waste Management Ltd | | | Environmental Violation | 2019 | £5,000 |
| LacPatrick Dairies (NI) Ltd | | | Environmental Violation | 2018 | £5,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2019 | £5,000 |
| Portadown Recycling & Skip Hire Ltd | | | environmental violation | 2013 | £5,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2012 | £5,000 |
| Rivercool Farm Ltd/Elliott Farm Ltd | | | Environmental Violation | 2019 | £4,500 |
| LacPatrick Dairies (NI) Ltd | | | environmental violation | 2014 | £4,500 |
| Greenan Generation Ltd | | | environmental violation | 2015 | £4,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2013 | £4,000 |
| John Beacom (Farms) Ltd | | | Environmental Violation | 2023 | £3,500 |
| Shergrim Recycling Ltd | | | environmental violation | 2011 | £3,500 |
| Hillmount Developments (NI) Ltd | | | Environmental Violation | 2019 | £3,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2022 | £3,000 |
| Transco Waste Ltd | | | environmental violation | 2011 | £3,000 |
| Mulholland Scrap Metals Ltd | | | environmental violation | 2010 | £3,000 |
| Mulholland Scrap Metals Ltd | | | environmental violation | 2010 | £3,000 |
| LacPatrick Dairies (NI) Ltd | | | Environmental Violation | 2019 | £2,500 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2021 | £2,500 |
| Orchard Mushrooms Limited | | | environmental violation | 2018 | £2,500 |
| LacPatrick Dairies (NI) Ltd | | | environmental violation | 2017 | £2,500 |
| Braidwater Limited | | | environmental violation | 2017 | £2,500 |
| Braidwater Limited | | | environmental violation | 2017 | £2,500 |
| Brendan Loughran & Sons Ltd | | | environmental violation | 2014 | £2,500 |
| Donnelly Transport | | | environmental violation | 2014 | £2,500 |
| Glen Water Limited | | | environmental violation | 2014 | £2,500 |
| Dale Farm Ltd | Dale Farm Ltd | food products | environmental violation | 2013 | £2,250 |
| Callan Renewables Ltd | | | Environmental Violation | 2022 | £2,000 |
| Coleraine Skip Hire & Recycling Ltd | | | Environmental Violation | 2021 | £2,000 |
| Northern Ireland Water Limited (NIWL) | Northern Ireland Water Limited | utilities and power generation | Environmental Violation | 2021 | £2,000 |
| Donmac Farms Ltd. | | | environmental violation | 2015 | £2,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2015 | £2,000 |
| Davison Canners Ltd | | | environmental violation | 2015 | £2,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2014 | £2,000 |
| Martin & Hamilton Ltd | | | environmental violation | 2014 | £2,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2013 | £2,000 |
| Western Brand Poultry Products (NI) Ltd | | | environmental violation | 2013 | £2,000 |
| Leslie Wright & Sons | | | environmental violation | 2013 | £2,000 |
| Down Developments Ltd | | | environmental violation | 2013 | £2,000 |
| Golf Links Holiday Homes Park | | | environmental violation | 2011 | £2,000 |
| 4 Chefs | | | environmental violation | 2012 | £1,950 |
| Mourne Compost Limited | | | Environmental Violation | 2023 | £1,900 |
| Recyco Ltd | | | environmental violation | 2011 | £1,750 |
| J&A Renewables Ltd | | | Environmental Violation | 2018 | £1,600 |
| J & A Renewables Limited | | | environmental violation | 2016 | £1,600 |
| Kayah Ltd | | | Environmental Violation | 2022 | £1,500 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2014 | £1,500 |
| Trading as A2B Skip Hire | | | environmental violation | 2011 | £1,500 |
| Malcolm Keys Farms Ltd | | | Environmental Violation | 2020 | £1,250 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2013 | £1,200 |
| Brickkiln Skip Hire Ltd | | | Environmental Violation | 2019 | £1,000 |
| Gibson Bros Ltd | | | Environmental Violation | 2022 | £1,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2015 | £1,000 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2012 | £1,000 |
| Castle Construction (NI) Limited | | | environmental violation | 2012 | £1,000 |
| O'Kane & Devine Construction Ltd | | | environmental violation | 2010 | £1,000 |
| Blackmore Fuels Ltd | | | Environmental Violation | 2022 | £750 |
| Firtree Developments Ltd | | | Environmental Violation | 2018 | £750 |
| Firtree Developments (NI) Ltd | | | environmental violation | 2017 | £750 |
| Parker Residential Ltd. | | | environmental violation | 2014 | £750 |
| McKinstry Skip Hire Ltd | | | environmental violation | 2013 | £750 |
| Dale Farm Ltd | Dale Farm Ltd | food products | environmental violation | 2013 | £750 |
| Daily Fresh Ltd | | | Environmental Violation | 2022 | £500 |
| John McQuillan (Contracts) Ltd | | | Environmental Violation | 2020 | £500 |
| Neil Mullin & Sons Ltd | | | Environmental Violation | 2018 | £500 |
| Northern Ireland Water Limited | Northern Ireland Water Limited | utilities and power generation | environmental violation | 2015 | £500 |
| Basil Sheils Bar Limited | | | environmental violation | 2015 | £500 |
| ESM Recycling Ltd | | | environmental violation | 2012 | £500 |
| Cashel Haulage Ltd | | | environmental violation | 2011 | £500 |
| F P McCann Ltd | FP McCann Limited | construction and engineering | environmental violation | 2011 | £500 |
| Jameson Properties N.I Ltd | | | environmental violation | 2010 | £500 |
| Golden Popcorn Ltd | | | Environmental Violation | 2023 | £400 |
