Each swimming pool shall be provided with satisfactory equipment for the determination of hydrogen-ion concentration (pH) ranging from 6.8 to 8.0. Satisfactory equipment shall also be provided for the determination of residual chlorine content ranging from 0.0 to 1.0.
12 Va. Admin. Code § 5-460-260
Statutory Authority
§ 35.1-13 of the Code of Virginia.