D.C. Mun. Regs. tit. 22-B, § 3427
3427.1 The water supply and distribution systems for each community residence facility shall conform to all applicable District codes, rules, and regulations.
3427.2 An adequate supply of hot water for the use of residents shall be available at all times.
3427.3 The temperature of hot water at fixtures used by residents shall be automatically controlled and shall not exceed one hundred ten degrees Fahrenheit (110N F.).
3427.4 The water supply may also include a separate or boosted supply at higher temperatures for the kitchen and for dishwashing and laundry uses.
SOURCE: Regulation No. 74-15 (June 14, 1974); as amended by the Community Residence Facilities Act of 1977 § 101(e), D.C. Law 2-35, 24 DCR 1458, 1503 (August 19, 1977); as amended by ERRATA published at 51 DCR 9308 (October 1, 2004).