Chemical Standards For Swimming Pools - Florida Health

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Chemical Standards for Swimming Pools
(Based on NSPI values & the Florida Administrative Code)
Maximum & Minimum
Recommended
Notes
Range
Range
Must be recorded in maintenance
1-10 ppm Pools *
2-3 ppm Pools
log daily. *Indoor pools cannot
Chlorine
2-10 ppm Spas
3-5 ppm Spas
exceed 5 ppm chlorine
Must be recorded in maintenance
1.5 -10 ppm Pools*
2-3 ppm Pools
Bromine
log daily. *Indoor pools cannot
3-5 ppm Spas
3-10 ppm Spas
exceed 6 ppm bromine
Must be recorded in maintenance
log daily. Raise pH with soda ash
pH
7.2 – 7.8
7.4 – 7.6
or sodium bi-carb. Lower pH with
muriatic acid or dry acid (sodium
bi-sulfate)
Cyanuric Acid
Check 1-2 times a week. Drain,
0-100 ppm Pools
30-40 ppm in Pools
(also called stabilizer
scrub & refill pool/spa if stabilizer
0-20 in Spas
0-40 ppm Spas
or conditioner)
exceeds limits.
Check weekly. Raise alkalinity with
Alkalinity
60-180 ppm
80-120 ppm
sodium bi-carb.
Check weekly. Raise hardness
Calcium Hardness
150-1000 ppm
200-400 ppm
with calcium chloride dehydrate.
Check monthly. High TDS makes
Total Dissolved
300-3000 ppm
1000-2000 ppm
water tastes salty. Dilute high
Solids (TDS)
TDS.
Keep in mind when dumping from your yellow jug into a pool or spa:
ONE GALLON OF CHLORINE RAISES A 100,000 GALLON POOL ONE (1) PPM
(a yellow jug holds 2.5 gallons)
A low pH (less than 7.2) is ACIDIC pool water = too much acid present, add sodium bicarbonate or
soda ash (sodium carbonate) to increase the pH of acidic water.
A high pH (greater than 7.8) is NOT ENOUGH acid in the water (the water is ‘basic’ or too alkaline),
therefore, you must add muriatic acid, or dry acid, to lower the pH.
2
Pre-coating DE elements: Use 1/5 lbs of DE per 10 ft
of filter surface area. A one pound coffe can
holds approximately 8 oz. (1/2 lb) of DE.
Flow rate = 5 times the bathing load (BL); example BL of 20 requires a flow rate of 100 gpm)
If you have questions about a pool, contact the
Health Department at 861-6675

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