2001 | 1 Episodes

Season 0 of Third Watch premiered on October 15, 2001.

1999 | 22 Episodes

Season 1 of Third Watch premiered on September 23, 1999.

2000 | 22 Episodes

Season 2 of Third Watch premiered on October 2, 2000.

2001 | 21 Episodes

Season 3 of Third Watch premiered on October 22, 2001.

2002 | 22 Episodes

Season 4 of Third Watch premiered on September 30, 2002.

2003 | 22 Episodes

Season 5 of Third Watch premiered on September 29, 2003.

2004 | 22 Episodes

Season 6 of Third Watch premiered on September 17, 2004.