Millstone Pool

Located on Level 1 of the Athletic Complex, Millstone Pool features eight lanes with a moveable bulkhead that extends from 25 yards to 25 meters. The pool also contains a diving well with 1-meter and 3-meter springboards.

Millstone Pool is the home of the WashU varsity swimming and diving team as well as several WashU sport clubs, such as the men’s and women’s water polo clubs, the swimming club and the triathlon club.

The pool has hours set aside daily for open recreational swimming in the 25-yard lap lanes as well as in the diving well.

Modified COVID-19 Swimming Protocols

Millstone Pool will be open to students only beginning Monday, Oct. 5. Check the Sumers Reopening page for details on modified operations for all rec facilities.

  • Swimmers are required to register for report times beginning 48 hours in advance at or on the WashU Rec App and must bring a WashU ID and proof of completing the University’s daily self-screening.
  • Swimmers will enter via the Sumers Rec Center main entrance. Even after the initial checkin at the front door, swimmers are asked to check in with the staff on the pool deck.
  • The open swim schedule does not correspond to the Sumers Rec Center open hours. Swimmers will still be able to swipe in at the Sumers main entrance to access the pool while Sumers is closed.
  • Only one swimmer per lane will be allowed and a maximum of 12 people allowed in pool area at a time.
  • Swimmers will be required to wear a mask on pool deck until entering the water.
  • Showers and sauna will not be available. Lockers rooms will only be available as a changing space for swimmers. Swimmers are expected to wear a mask in the locker rooms.
  • Towel service will be unavailable.
  • No swim equipment will be available for lending, however goggles will be available for purchase at the membership services desk.

Open Swim Hours


11:30 a.m. – 1:00 p.m. (Report times: 11:30 a.m., 12:15 p.m.)
7:00 p.m. – 9:00 p.m. (Report times: 7:00, 8:00 p.m.)


11:30 a.m. – 1:00 p.m. (Report times: 11:30 a.m., 12:15 p.m.)


12:00 p.m. – 3:00 p.m. (Report times: 12:00, 1:00, 2:00 p.m.)

This schedule is subject to change.

Regular Open Swim Hours

Below are the typical hours for a regular semester. Millstone Pool is currently operating under modified hours due to COVID-19. 

Mondays & Wednesdays
6:00 a.m. – 8:15 a.m.
11:30 a.m. – 1:00 p.m.
7:00 p.m. – 8:30 p.m.
Tuesdays & Thursdays
11:30 a.m. – 1:00 p.m.
7:00 p.m. – 8:30 p.m.
6:00 a.m. – 8:15 a.m.
11:30 a.m. – 1:00 p.m.
Saturdays & Sundays
1:00 p.m. – 3:00 p.m.