(A) All gaseous chlorine equipment shall be operated and maintained in accordance with the standards and recommendations of the Chlorine Institute, Inc. Pool equipment operating staff shall be trained in use of all such equipment including self-contained breathing apparatus and shall be prepared to show evidence of that training. A plan of action for an emergency arising from the usage of gaseous chlorine shall be written, made known, posted and practiced.
(B) When chlorine is used, a free chlorine residual of at least 1.0 mg/l shall be maintained throughout the pool whenever it is open or in use. If other halogens are used, residuals of equivalent disinfecting strength shall be maintained.
(C) The Department shall collect and shall examine from each swimming pool subject to this subchapter at least one bacteriological sample per week whenever the swimming pool is open for use.
(D) The swimming pool water shall be maintained in an alkaline condition as indicated by a pH of not less than 7.2 and not over 7.8. A pH testing kit accurate to the nearest 0.2 pH unit shall be provided at each swimming pool. The total alkalinity of the water shall be at least 80 parts per million (ppm).
(E) Not more than 15% of the samples covering any considerable period of time shall either:
(1) Contain more than 200 bacteria per milliliter, as determined by the standard 35° C., agar plat count; or
(2) Show positive test (confirmed test) for coliform organisms in any of the five 10-milliliter portions of a sample, or more than 1.0 coliform organisms per 50 milliliters when the membrane filter test is used.
(F) All samples shall be collected, dechlorinated and examined for total plate count and coliform bacteria. Such test shall be performed in accordance with the procedures outlined in the latest edition of Standard Methods for the Examination of Water and Wastewater (APHA). When samples are examined in laboratories other than those of the state Board of Health, copies of the report of examination shall be sent by the laboratory to the Division of Sanitary Engineering of the state Board of Health, using forms provided by that agency.
('74 Code, § 27-28) (Ord. G-24-90, passed 9-11-90)