An Owner shall inspect and test all backflow preventers annually or as otherwise directed by WASA at no charge to WASA. All test results shall be submitted to the General Manager within ten (10) days of test.
An Owner shall repair or replace any backflow preventer that has failed within ten (10) days of the date the failure is made known to the Owner. In the event a device is replaced or repairs are made, an Owner shall test the device to insure correct operation.
An Owner shall not permit the bypass of any backflow preventer unless a backflow preventer is installed on the bypass.
D.C. Mun. Regs. tit. 21, r. 21-5406