All official European Union website addresses are in the europa.eu domain.
See all EU institutions and bodiesReporting requirements specified in directives
| Directive | Reporting authority | Frequency | Date for first report | Period |
| Surface Water (75/440/EEC) | Commission through a central national agency | every 12 months | before 1 October of the following year | one year |
| Sampling and Analysis (79/869/EEC) | Commission | every 3 years | 9 months before the end of period covered | 1993-1995 |
| Bathing Water (76/160/EEC) | Commission | regular intervals after | 4 years after notification | bathing season |
| Dangerous Substances (76/464/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Mercury (82/176/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Mercury (84/156/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Cadmium (83/513/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Hexachlorocyclohexane (84/491/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Carbon Tetrachloride (86/280/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Aldrin (88/347/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Dichloroethane (90/415/EEC) | Commission | every 5 years | 4 years after notification | five years (1980/ 1985/1990/1995) |
| Freshwater Fish (78/659/EEC) | Commission | regular intervals | 5 years after implementation (before 1 Oct. 1996) | one year |
| Exchange of Information (77/795/EEC and 86/574/EEC) | Commission through a central national agency | every 12 months | before 1 October of the following year | one year |
| Reporting Decision (92/446/EEC) | Commission | Specific to directives | specific to directives | Specific to directives |
| Groundwater (80/68/EEC) | Commission | on request | on request | three years (1993/1994/1995) |
| Drinking Water (80/778/EEC) | Commission | ns | within 15 days | ns |
| UWWT (91/271/EEC) | Commission | on request | within 6 months of the request | one year |
| Nitrates (91/676/EEC) | Commission | four years period | 4 years after notification | four years |
| Shellfish Waters (79/923/EEC) | Commission | regular intervals | 6 years after implementation (before 1 Oct. 1996) | one year |
| Proposal on Landfill (COM(93)275) | Commission | every 3 years | 3 years after implementation | three years |
| Proposal on Bathing Water (COM(94)36) | Commission | every year | 31 Dec. 1996 | one year |
| Proposal on Ecological Quality (COM(93)680) | Commission | every 3 years | 9 months of the end of period covered | three years (1999/2000/2001) |
| Titanium Dioxide (82/883/EEC) | Commission | ns | 1981 and 1986 | one year (1981) |