12 Va. Admin. Code § 5-460-270
Acceptable records of the operation of the swimming pool shall be maintained. These records shall include pH levels, free chlorine residual, water clarity, cleanliness, and such other things as may be required for the health and safety of the bathers. These records shall be kept on file for a period of one year.
§ 35.1-13 of the Code of Virginia.
Derived from VR355-35-05 § 27, eff. March 1, 1962.