Ariz. Admin. Code § R9-8-803 - Public and Semipublic Swimming Pool and Spa Water Quality and Disinfection Standards

A. An operator of a public or semipublic swimming pool or spa shall ensure that:

1. The swimming pool or spa is filled only with potable water;

2. The water in the swimming pool or spa:

a. Complies with the water quality standards in this Section when the swimming pool or spa is open for water contact recreation;

b. Maintains a pH of between 7.2 and 7.8;

c. Maintains a total alkalinity of between 60 and 100 ppm; and

d. Is sufficiently clear so that the main drain in the swimming pool or spa is visible from the deck of the swimming pool or spa;

3. The surface of the water in the swimming pool or spa is free from scum and floating debris;

4. The bottom and sides of the swimming pool or spa are free from sediment, dirt, slime, and algae;

5. The chemical disinfection level, pH, total alkalinity, and temperature of the water is tested at least once daily; and

6. A daily operating log that includes the results of the tests in subsection (A)(5) is maintained for 12 months from the date of the test and is available to a regulatory authority or a member of the public upon request.

B. An operator of a public or semipublic swimming pool or spa:

1. Shall not use chloramine as a primary disinfectant in the swimming pool or spa;

2. Shall not add gaseous disinfectant directly into the swimming pool;

3. Shall not add dry or liquid disinfectant directly into the swimming pool or spa for routine disinfection; and

4. May add dry or liquid disinfectant directly into the swimming pool or spa for shock treatment.

C. An operator of a public or semipublic swimming pool or spa using chlorinated isocyanurates or cyanuric acid stabilizer for disinfection and stabilization in the swimming pool or spa shall ensure that the water in the swimming pool or spa maintains an oxidation-reduction potential equal to or greater than 650 millivolts and that cyanuric acid levels, whether from chlorinated isocyanurates or from the separate addition of cyanuric acid stabilizer, do not exceed 150 ppm.

D. An operator of a public or semipublic swimming pool shall ensure that the water in the swimming pool meets one of the following chemical disinfection standards:

1. A free chlorine residual between 1.0 and 3.0 ppm as measured by the N, N-Diethyl-p-phenylenediamine test,

2. A free bromine residual between 2.0 and 4.0 ppm as measured by the N, N-Diethyl-p-phenylenediamine test, or

3. An oxidation-reduction potential equal to or greater than 650 millivolts.

E. An operator of a public or semipublic spa shall ensure that:

1. A chlorine gas disinfection system is not used in the spa;

2. The water temperature in the spa does not exceed 40EC; and

3. The water in the spa meets one of the following chemical disinfection standards:

a. A free chlorine residual between 3.0 and 5.0 ppm as measured by the N, N-Diethyl-p-phenylenediamine test,

b. A free bromine residual between 3.0 and 5.0 ppm as measured by the N, N-Diethyl-p-phenylenediamine test, or

c. An oxidation-reduction potential equal to or greater than 650 millivolts.

Notes

Ariz. Admin. Code § R9-8-803

New Section made by final rulemaking at 8 A.A.R. 3645, effective August 9, 2002 (Supp. 02-3).