| Year end | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| Irish Water Accounts | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 |
| Scottish Water Accounts | 2013-14 | 2014-15 | 2015-16 | 2016-17 | 2017-18 | 2018-19 | 2019-20 | 2020-21 |