See below. Eastern Market pool closed from today on. I'll post the opening when I hear.
For Immediate Release: April 20, 2010

Rumsey Aquatic Center to Close Temporarily Due to Mechanical Repairs

Media Contact: John A. Stokes, (202) 673-2195
DPR Aquatics: (202) 671-1289

The DC Department of Parks and Recreation (DPR) will temporary close the William H. Rumsey Aquatic Center, 635 North Carolina Avenue, SE, on Tuesday, April 20, 2010, due to mechanical repairs to the pump system.

DPR apologizes for the inconvenience and is working to resolve the issue, and will provide a reopening date and time when available.

Locations and hours of other DPR facilities are available in the "Recreation Facilities" section of DPR's website, DPR.DC.GOV, or by contacting DPR at (202) 673-7647.