Parameter | Minimum | Ideal | Maximum |
Free chlorine residual (ppm) for indoor traditional swimming pools, indoor non-traditional pools, and indoor wading pools | 1.0 | 2.0 - 4.0 | 10.0 |
Free chlorine residual (ppm) for outdoor traditional swimming pools, outdoor non-traditional pools, and outdoor wading pools not using cyanuric acid or stabilized chlorine | 1.0 | 2.0 - 4.0 | 10.0 |
Free chlorine residual (ppm) for outdoor traditional swimming pools, outdoor non-traditional swimming pools, and outdoor wading pools using cyanuric acid or stabilized chlorine | 2.0 | 2.0 - 8.0 | 10.0 |
Combined Chlorine (ppm) | 0.0 | 0.0 | 0.2 |
pH | 7.2 | 7.4 - 7.6 | 7.8 |
Minimum | Ideal | Maximum | |
Temperature (degrees Fahrenheit) | Personal preference | 104 | |
Free chlorine residual (ppm) for all hot tubs, spas and therapeutic pools | 2.0 | 3.0 - 5.0 | 10.0 |
Combined chlorine (ppm) | 0.0 | 0.0 | 0.2 |
pH | 7.2 | 7.4 - 7.6 | 7.8 |
Minimum | Ideal | Maximum | |
Total Bromine Residual (ppm) | 3.0 | 4.0 - 6.0 | 8.0 |
pH | 7.2 | 7.4 - 7.6 | 7.8 |
Minimum | Ideal | Maximum | |
Temperature (degrees Fahrenheit) | Personal preference | 104 | |
Total bromine residual (ppm) | 4.0 | 4.0 - 6.0 | 8.0 |
pH | 7.2 | 7.4 - 7.6 | 7.8 |
Maximum | Requirements | |
Residual ozone | 0.1 ppm | Ozone systems shall be operated and maintained according to the manufacturer' s instructions to maintain the required design performance to achieve 3-log (99.9%) reduction in the number of infective cryptosporidium parvum oocysts per pass through the system. All employees shall be properly trained in the operation and maintenance of the equipment. |
Copper/Silver ions | 1.3 ppm (copper) 0.10 ppm (silver) | Only those systems that are EPA-registered for use as sanitizers or disinfectants in aquatic venues in the United States are permitted. |
Ultraviolet light | Not applicable | UV systems shall only operate while the recirculation system is operating. UV sensors shall be calibrated at a frequency in accordance with manufacturer recommendations. Secondary UV systems shall be operated and maintained not to exceed the maximum validated flow rate and meet or exceed the minimum validated output intensity needed to achieve the required dose for a 3-log (99.9%) reduction in the number of infective cryptosporidium parvum oocysts per pass through the secondary disinfection system. |
All entrances to an Aquatic Venue shall be secured with a locking device at all times during which the Aquatic Venue is closed to bathers.
216 R.I. Code R. 216-RICR-50-05-4.6
Amended effective 4/28/2020
Amended effective 8/24/2021
Amended effective 8/7/2022