| Summer LeagueWater polo · Men · Senior | Sliema Utd (men's water polo)Championship title | Champions | 1925Summer League 1925 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Valletta D (men's water polo)Championship title | Champions | 1926Summer League 1926 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Neptunes (men's water polo)Championship title | Champions | 1933Summer League 1933 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Sliema ASC (men's water polo)Championship title | Champions | 1939Summer League 1939 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Valletta (men's water polo)Championship title | Champions | 1950Summer League 1950 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Balluta (men's water polo)Championship title | Champions | 1952Summer League 1952 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Sirens ASC (men's water polo)Championship title | Champions | 1959Summer League 1959 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Neptunes (men's water polo)Championship title | Champions | 1964Summer League 1964 | ↗ Aquatic Sports Association of Malta |
| Summer LeagueWater polo · Men · Senior | Sirens ASC (men's water polo)Championship title | Champions | 1967Summer League 1967 | ↗ Aquatic Sports Association of Malta |
| Division 1 League Guards Challenge CupWater polo · Men · Senior | Valletta (men's water polo)Championship title | Champions | 1973Division 1 League Guards Challenge Cup 1973 | ↗ Aquatic Sports Association of Malta |
| Division 1 League Guards Challenge CupWater polo · Men · Senior | Neptunes (men's water polo)Championship title | Champions | 1977Division 1 League Guards Challenge Cup 1977 | ↗ Aquatic Sports Association of Malta |
| Division 1 League Guards Challenge CupWater polo · Men · Senior | Valletta (men's water polo)Championship title | Champions | 1980Division 1 League Guards Challenge Cup 1980 | ↗ Aquatic Sports Association of Malta |
| Division 1 League Guards Challenge CupWater polo · Men · Senior | Valletta (men's water polo)Championship title | Champions | 1985Division 1 League Guards Challenge Cup 1985 | ↗ Aquatic Sports Association of Malta |
| First Division LeagueWater polo · Men · Senior | Valletta (men's water polo)Championship title | Champions | 1990First Division League 1990 | ↗ Aquatic Sports Association of Malta |
| First Division LeagueWater polo · Men · Senior | San Giljan ASC (men's water polo)Championship title | Champions | 1995First Division League 1995 | ↗ Aquatic Sports Association of Malta |
| First Division LeagueWater polo · Men · Senior | M'Scala ASC (men's water polo)Championship title | Champions | 1997First Division League 1997 | ↗ Aquatic Sports Association of Malta |
| First Division LeagueWater polo · Men · Senior | Sirens ASC (men's water polo)Championship title | Champions | 2000First Division League 2000 | ↗ Aquatic Sports Association of Malta |
| First Division LeagueWater polo · Men · Senior | Sirens ASC (men's water polo)Championship title | Champions | 2005First Division League 2005 | ↗ Aquatic Sports Association of Malta |
| Premier Division Summer LeagueWater polo · Men · Senior | San Giljan ASC (men's water polo)Championship title | Champions | 2015Premier Division Summer League 2015 | ↗ Aquatic Sports Association of Malta |
| Premier Division Summer LeagueWater polo · Men · Senior | Sliema ASC (men's water polo)Championship title | Champions | 2024Premier Division Summer League 2024 | ↗ Aquatic Sports Association of Malta |
| Women's Summer LeagueWater polo · Women · Senior | Neptunes (women's water polo)Championship title | Champions | 2013Women's Summer League 2013 | ↗ Aquatic Sports Association of Malta |
| Women's Summer LeagueWater polo · Women · Senior | Sliema (women's water polo)Championship title | Champions | 2015Women's Summer League 2015 | ↗ Aquatic Sports Association of Malta |
| Women's Summer LeagueWater polo · Women · Senior | Exiles (women's water polo)Championship title | Champions | 2017Women's Summer League 2017 | ↗ Aquatic Sports Association of Malta |
| Women's Summer LeagueWater polo · Women · Senior | Exiles (women's water polo)Championship title | Champions | 2019Women's Summer League 2019 | ↗ Aquatic Sports Association of Malta |
| Women's Summer LeagueWater polo · Women · Senior | Sirens (women's water polo)Championship title | Champions | 2021Women's Summer League 2021 | ↗ Aquatic Sports Association of Malta |