A nondrinking water or nonpotable water supply may be used only if its use is approved by the Department.
Nondrinking water may be used for purposes unrelated to massage establishment or health spa facility's massage therapy including, but not limited to, air conditioning, fire protection, irrigation, plant and equipment cleanup, and other sanitary purposes.
D.C. Mun. Regs. tit. 25, r. 25-D604