D.C. Mun. Regs. tit. 21, r. 21-904
Each application for the construction and maintenance of a method for the disposal of human excreta or body wastes other than by an earth-pit privy or a septic tank and subsoil sewage disposal system shall be made in writing on a blank form furnished by and filed with the Department.
The application form shall specify the following:
The form shall be executed in duplicate, and each copy shall be accompanied by a complete set of detailed working plans of the method proposed.
The Director shall determine whether the method proposed is to be upon an original lot or a subdivisional lot situated on a street where there is a public sewer and watermain available for the use of that lot.
No permit shall be issued until the Director is satisfied that the method can be maintained without endangering the public health or otherwise creating a nuisance.
The permit for the maintenance of the disposal method shall be issued without cost.
The permit shall be affixed in a conspicuous place on the inside of the privy, outhouse building, or other place designated by the Director, and shall remain in that place.
D.C. Mun. Regs. tit. 21, r. 21-904