When chlorine is used:

• For swimming pools free chlorine must be maintained between 1.0 – 5.0 parts per million (ppm).

• For spa pools, wading pools, and recreational water features (such as interactive fountains) free chlorine must be maintained between 2.0 – 5.0ppm.

• Free chlorine residuals shall not exceed 5.0 ppm in swimming pools, spa pools, wading pools, or recreational water features when in use.

• If other disinfectants are used, residuals of equivalent disinfecting strength shall be maintained.

• A testing kit, approved by the Health Officer, for measuring the concentration of the disinfectant shall be provided at each regulated swimming pool, spa pool, wading pool, or other recreational water feature.

pH and alkalinity

• The disinfected water shall be maintained in an alkaline condition as indicated by a pH of not less than 7.0 and not over 8.0.

• A pH testing kit accurate to the nearest 0.2 pH unit shall be provided at each regulated swimming pool, spa pool, or other recreational water feature.

• The total alkalinity of the water shall be at least 80 ppm and at most 180 ppm as measured by the methyl-orange test.

Water Clarity

• The water in a swimming pool, wading pool, or spa pool shall have sufficient clarity at all times so that the main drain is clearly visible and sharply defined when observed from the edge of the pool at a point adjacent thereto.

For spa pools, and heated facilities, the maximum allowable water temperature shall not exceed 104° Fahrenheit.

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