007.04.3 Appendix B. Arkansas Pool Chemical Operational Parameters
AR ADC 007.04.3 Appendix BArkansas Administrative Code
Ark. Admin. Code 007.04.3 Appendix B
007.04.3 Appendix B. Arkansas Pool Chemical Operational Parameters
Below are operation parameters for the proper chemical treatment and maintenance of pool/spa water. Chemical treatment alone will not produce sanitary pool water. A filtration system in proper operational condition is also required to attain sparkling clear, polished, sanitary water. *Mandatory tests for compliance
Disinfectant Levels* | Min | Ideal | Max | Comments | Testing Interval |
|---|---|---|---|---|---|
Free chlorine, ppm | |||||
Pool | 1.0 | 1.0-3.0 | 5.0 | Hot weather/heavy use may require operation at or near maximum level. Regular Superchlorination is recommended. | Daily |
Spa | 2.0 | 3.0-5.0 | 5.0 | ||
When stabilizer is used | 1.5 | 5.0 | |||
Disinfectant Levels* | Min | Ideal | Max | Comments | Testing Interval |
Combined chlorine, ppm** | |||||
Pool | None | None | 0.2 | High combined results in reduced chemical efficacy. | Daily |
Take remedial action to establish break point chlorination. | |||||
Spa | None | None | 0.2 | ||
Other signs of combined chlorine: Sharp chlorine odor, Eye irritation, Algae growth | |||||
Disinfectant Levels* | Min | Ideal | Max | Comments | Testing Interval |
Bromine, ppm | |||||
Pool | 2.25 | 2.25-4.0 | 4.0 | Daily | |
Spa | 2.25 | 3.0-5.0 | 5.0 | ||
Disinfectant Levels* | Min | Ideal | Max | Comments | |
Iodine, ppm | |||||
––– | ––– | ––– | Levels not established | ||
Note: Local Health Department officials must be consulted before use. | |||||
Temperature | Max | Comments | Check | ||
Spa | 104°F | For 15 minute intervals on a timer | Daily | ||
Oxidation Reduction Potential | Min | Ideal | Max | Comments | Testing Interval |
ORP | 650 | ––– | ––– | When chlorine or bromine is used as the primary disinfectant, ORP can be used as a supplemental measurement of proper sanitizer activity. The use of ORP testing does not eliminate or supersede the need for testing the sanitizer level with standard test kits. An ORP reading may be affected by a number of factors including (1) pH, (2) probe film, (3) cyanuric acid, and (4) other. Follow manufacturer's recommendations. | Daily |
Chemical Values | Min | Ideal | Max | Comments | Testing Interval |
pH* | 7.0 | 7.4-7.6 | 7.8 | If pH is: | Daily |
Too high: Low chlorine efficiency, Scale formation, Cloudywater, Eye discomfort | |||||
Too low: Rapid dissipation of disinfectant, Plaster and concrete etching, Eye discomfort, Corrosion of metals, Vinyl liner damage | |||||
Total Alkalinity*(buffering) as CaCO3 chlorite (ppm) | 60 | 80-100 calcium, lithium, sodium hypochlorites 100-120 sodium dichlor, trichlor, chlorinegas, bromine compounds | 180 | If total alkalinity is: | Weekly |
Too Low: pH bounce, Corrosion tendency | |||||
Too High: Cloudy water, Increased scaling potential, and pH tends to be too high | |||||
Cyanuric acid*(ppm) | None | 25-40 | 90 | If stabilizer is: | Weekly |
Too Low: Chlorine residual rapidly destroyed by sunlight | |||||
Too High: May reduce chlorine efficacy | |||||
Note: Stabilizer is not needed in indoor or brominated pools. | |||||
Total dissolved solids | 300 | 1000-2000 | 3000 | These values are offered as ppm guidelines rather than absolute values to indicate concern for accumulation of impurities in the course of operation. Excessively high TDS may lead to hazy water, corrosion of fixtures, etc., and can be reduced by partial draining with addition of fresh water. High initial TDS may indicate poor water quality due to corrosive mineral salts, humus, or organic matter. Consult local water authority. | Monthly or Suspect |
Calcium hardness (ppm) | 150 | 200-400 | 500-1000 | Operation of pools at maximum hardness will depend on alkalinity (buffering) requirements of the sanitizer used. Minimum alkalinity and lower pH must be used with maximum hardness (Over 50ppm) | Monthly or Suspect |
Heavy metals | If heavy metals, such as copper, iron, manganese, are present: Staining may occur, Water may discolor, Chlorine dissipates rapidly, Filter may plug, May indicate pH too low, corrosion, etc. | Suspect | |||
NOTE: The number of “Daily” testing intervals will vary based on type of facility, hours of operation, & bather load.
Credits
Amended Aug. 1, 2012.
Current with amendments received through February 15, 2024. Some sections may be more current, see credit for details.
Ark. Admin. Code 007.04.3 Appendix B, AR ADC 007.04.3 Appendix B
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