First occupied for competition in January 1989, the James E. Longnecker Pool is home of the Men's and Women's Swimming and Water Polo Teams. One of the best and fastest small-college pools in the region, the facility is reserved solely for the use of the athletes on those teams.

Built as part of the 1989 addition to the Physical Learning Center, the 25-yard long by 56-foot wide pool features a seven foot deep shallow end, eight 25-yard competition lanes, two 1-meter diving boards and one 3-meter diving board. The balcony seating area has space for 300 spectators.

The pool also features a Colorado Timing system, which includes electronic timing and relay judging in each lane. The facility's scoreboard features eight lines for results, three lines for event/heat and scoring, and one scrolling line showing lane by lane results. Additionally, the system can be programmed for individualized practice workouts.

Since the Longnecker Pool is an all deep facility it can be used to host many water polo events that are restricted from shallow-deep facilities. The facility served as host for the 2012 Collegiate Water Polo Association Division III Championships and is slated to host the same event again during the 2015 season.

Adjacent to Longnecker Pool, Recreation Pool is used as a warm-up/cool-down pool during competitive events.

Longnecker Pool has been the home of the PAC Swimming and Diving Championships since 1990.

Known simply as the Grove City College Competition Pool until 2009, the facility was re-named for long-time men's swimming coach James E. Longnecker during the 2009 season.