D.C. Mun. Regs. tit. 12, r. 12-F410
Strike Section 410.4 of the International Plumbing Code in its entirety and insert a new Section 410.4 into the Plumbing Code in its place to read as follows:
Substitution. Where restaurants provide drinking water in a container free of charge, drinking fountains shall not be required. In establishments of occupancies B or M, with an area of 1,500 square feet (139.4 m2) or less, a water dispenser shall be permitted to be substituted for the required drinking fountains. In other occupancies where drinking fountains are required, including B or M occupancies with an area of more than 1,500 square feet (139.4 m2), water dispensers shall be permitted to be substituted for not more than 50 percent of the required number of drinking fountains.
D.C. Mun. Regs. tit. 12, r. 12-F410