Section Env-Wq 1109.08 - Disinfection Methods(a) Each component of a primary disinfection system shall comply with Env-Wq 1108.22(a)(1).(b) A PBF shall use at least one of the following primary disinfection methods in order to meet the water quality standards specified in Env-Wq 1108.12 and Env-Wq 1108.13 for each PBF: (1) A positive displacement pump type disinfection unit providing hypochlorination;(2) A disinfection unit that controls the rate of hypochlorite or bromine tablet erosion; or(3) A salt electrolytic chlorine generator.(c) A disinfection unit as specified in (b)(1) or (2), above, shall be capable of feeding at a rate to permit a free residual chlorine concentration of 10 mg/L or a free residual bromine concentration of 22.5 mg/L to be maintained in the pool.(d) A salt electrolytic chlorine generator (ECG) as specified in (b)(3), above, shall: (1) Have a total dissolved solids (TDS) readout, a low salt indicator, and integrated pH monitoring and management;(2) Have a feed rate that is adjustable from zero to full range;(3) Be capable of providing a chlorine dosage equivalent to 100% of the total daily requirement during peak bather load;(4) Be installed according to manufacturer's instructions; and(5) Maintain the saline content of the pool or spa water in the required range specified by the manufacturer.(e) Gaseous chlorine shall not be used as a disinfection method.(f) Stabilized chlorine or bromine shall not be used as a disinfection method for indoor facilities.(g) Each disinfection unit and ECG shall be: (1) Installed in accordance with the manufacturer's instructions; and(2) Wired such that the chemical feed equipment cannot operate when circulation flow stops.N.H. Admin. Code § Env-Wq 1109.08
Derived from Volume XLI Number 19, Filed May 13, 2021, Proposed by #13198, Effective 5/1/2021, Expires 5/1/2031 (see Revision Note #3 at chapter heading for Env-Wq 1100) (formerly Env-Wq 1106.08)