A spa shall be operated so as to circulate, filter, and disinfect the entire volume of spa water no less than once every 30 minutes.
N.H. Admin. Code § Env-Wq 1110.07
A spa shall be operated so as to circulate, filter, and disinfect the entire volume of spa water no less than once every 30 minutes.
N.H. Admin. Code § Env-Wq 1110.07