The Piraeus Football Clubs Association (Greek: Ένωση Ποδοσφαιρικών Σωματείων Πειραιώς, abbreviated E.P.S.P. (Ε.Π.Σ.Π.) was founded in 1925 after the termination of E.P.S. Athens-Piraeus. It was the second largest football association in Greece and was officially recognized by FIFA alongside E.P.S. Athens, as the Hellenic Football Federation had not been established at the time. After the establishment of Alpha Ethniki it became the Piraeus Football Clubs Association for amateurs.
Olympiacos participated in Piraeus Championship from the first time in 1925, immediately after its inception. They were invincible and won the final defeating Piraikos with 4-2. In the early years they were a great opponent of Ethnikos Piraeus, who won the championship of 1928, while the two clubs tied in 1930 and were declared both champions. Ethnikos Piraeus also won the Championship in 1939, the only time Olympiacos participated and lost from another team. Since the 1930-1931 championship and up to 1959 Olympiacos played without serious opponents and won all the championships. They didn't participate in the championships of 1932, 1933 and 1936 because of the formation of the division while they were eliminated in 1928 after just one game and were excluded from the Hellenic Football Federation with AEK and Panathinaikos because they refused to participate in the national championship.
1959-1960 : Atromitos Piraeus1960-1961 : Panelefsiniakos1961-1962 : Vyzas Megara1962-1963 : A.E. Nikaia1963-1964 : Doxa Piraeus1964-1965 : Aias Salamina1965-1966 : A.O.K. Faliro1966-1967 : Moschato1967-1968 : D.A.O. Argonautis1968-1969 : Saronikos F.C.1969-1970 : Enosis Aspropyrgos1970-1971 : Saronikos F.C.1971-1972 : A.P.O. Keratsini1972-1973 : A.O. Syros1973-1974 : Amfiali1974-1975 : Amfiali1975-1976 : Enosis Aspropyrgos1976-1977 : Ionikos F.C.1977-1978 : Vyzas Megara1978-1979 : A.O. Neapoli1979-1980 : Iraklis Elefsina1980-1981 : A.O. Nikaia1981-1982 : D.A.O. Argonautis1982-1983 : Peramaikos1983-1984 : A.S. Pontioi1984-1985 : Doxa Piraeus1985-1986 : Amfiali1986-1987 : A.S. Drapetsona1987-1988 : Mandraikos F.C.1988-1989 : Amfiali1989-1990 : A.P.O. Keratsini1990-1991 : Iraklis Elefsina1991-1992 : Enosis Aspropyrgos1992-1993 : A.O. Peiraiki1993-1994 : D.A.O. Argonautis1994-1995 : Mauros Aetos1995-1996 : Atromitos Piraeus, Mandraikos F.C.1996-1997 : Moschato, Chalkidona1997-1998 : Vyzas Megara, A.S. Pontioi1998-1999 : Atromitos Piraeus1999-2000 : Atromitos Piraeus, Aias Salamina2000-2001 : Ermis Korydallos, A.O. Manis2001-2002 : Enosis Aspropyrgos, Aias Salamina2002-2003 : A.P.O. Keratsini, A.S. Pontioi2003-2004 : Moschato, Saronikos F.C.2004-2005 : Atromitos Piraeus, A.E. Nikaia2005-2006 : A.E. Peramatos, Iraklis Nikaia2006-2007 : Chalkidona, Peramaikos2007-2008 : Amfiali, A.P.O. Keratsini2008-2009 : Ellas Pontion, Aris Amfialis2009-2010 : Atromitos Piraeus, Moschato2010-2011 : Ellas Pontion, Olympiada Keratsiniou2011-2012 : Peramaikos, Aris Amfialis2012-2013 : Ethnikos Piraeus, Moschato2013-2014 : Ethnikos Piraeus, Odigitria2014-2015 : A.P.O. Keratsini, Ikaros Kallitheas2015-2016 : A.P.O. Aetos Korydallou, Proodeftiki F.C.The championship of E.P.S. Piraeus consists of three categories. The champion of the category A rises in the Regional Championship. The structure of the 2016-17 season championship of the amateur association is as follows:
Category A: 32 teams (two groups of 16 teams)Category B: 27 teams (one groups of 14 teams and another one of 13)Category C: 15 teams