405. WATER QUALITY – TEST KITS

405 WATER QUALITY ─ TEST KITS 405.1 Water quality test kits such as colorimetric, titrimetric, turbidimetric, or electronic are required to be on the premises of all swimming pools and spa pools to determine free active chlorine and total chlorine using N,N-Diethyl-p-Phenylenediamine (DPD), or bromine level, total alkalinity, calcium hardness, and pH. 405.2 Water quality test kits shall be provided if the corresponding chemicals are used: (a) Cyanuric acid; (b) Sodium chloride; (c) Quaternary ammonium; (d) Ozone; and (e) Copper. 405.3 A single water quality test kit may be used for multiple pools, provided the pools have common ownership and they are located on contiguous property. 405.4 A water quality test kit shall be capable of measuring disinfectant levels in the normal operating range. SOURCE: Final Rulemaking published at 64 DCR 5359 (June 9, 2017). District of Columbia Municipal Regulations Aquatic Facilities Regulations: Swimming Pools, Spa Pools, And Saunas 25-C DCMR § 405