(A) The water chemistry and bactericidal chemical concentrations shall be maintained within the parameters promulgated by 410 IAC 6-2.1, as amended from time to time. All pools, when open for use, shall be continuously and automatically disinfected with a chemical that imparts an easily measured, free residual. A free residual of the disinfectant chemical shall be maintained throughout the pool at concentrations in accordance with the following.
(1) Required disinfectant levels.
CHLORINE | BROMINE | |||
POOL TYPE
|
Minimum | Maximum | Minimum | Maximum |
CHLORINE | BROMINE | |||
POOL TYPE
|
Minimum | Maximum | Minimum | Maximum |
Wading pools | 3.0 ppm | 7.0 ppm | 4.0 ppm | 10.0 ppm |
Spa pools | 2.0 ppm | 7.0 ppm | 4.0 ppm | 10.0 ppm |
Waterslide plunge pools | 2.0 ppm | 7.0 ppm | 3.0 ppm | 10.0 ppm |
Wave pools | 2.0 ppm | 7.0 ppm | 3.0 ppm | 10.0 ppm |
Interactive water fountains (spray grounds, wet decks, splash pads) | 2.0 ppm | 4.0 ppm | ||
All other pools | 1.0 ppm | 7.0 ppm | 2.0 ppm | 10.0 ppm |
(2) Required levels of other chemical parameters.
Minimum | Maximum | |
pH | 7.2 | 7.8 |
Cyanuric acid* | n/a | 60 mg/L |
Alkalinity | 80 mg/L | 120 ppm |
Combined chlorine | n/a | 0.50 mg/L |
* Cyanuric acid shall not be used in any indoor pool | ||
(B) Where the concentrations of combined chlorine is greater than 0.50 mg/L (ppm), the swimming pool shall be superchlorinated or otherwise treated in a manner to oxidize and diminish the concentration of combined chlorine. No harsh or irritating chemical shall be added manually and directly to the water of any swimming pool except under emergency conditions. Should it be necessary to add any such chemical in concentrated form directly into the water of any swimming pool, use of the swimming pool shall be terminated until such time as the chemical is dissolved completely in and is diffused thoroughly throughout the swimming pool. The broadcasting or manual application of chemicals to maintain a disinfectant residual or pH is prohibited except as may be required to superchlorinate the swimming pool. Under no conditions may superchlorination or manual adjustment of pH occur while the swimming pool is in use by swimmers. No swimmers should be allowed in the pool for at least one hour after the manual addition of chemicals.
(Ord. 061520A, passed 7-20-20)