Acceptible chemical level guidelines
|
Control |
Ideal |
Min |
Max |
Comments |
|
pH |
7.4 |
7.2 |
7.6 |
|
|
Free Chlorine |
1.5 to 3ppm |
1.0ppm |
10ppm |
Shock dose |
|
Combined Chlorine |
|
|
0.5ppm |
Absolute max 1.0 ppm |
|
Total Alkalinity |
100ppm |
80ppm |
150ppm |
|
|
Calcium hardness |
275ppm |
75ppm |
500ppm |
|
|
Cyanuric Acid |
30ppm |
|
60ppm |
Not always used |
|
Sulphates |
|
|
300ppm |
New Pools 200ppm |
|
Chlorides |
|
|
600ppm |
|
The measurement of chemical levels and evaluation of Pool and Spa waters is often referred to as the Water Balance. e.g. :- If the pH level is out of range then the effectiveness of the Chlorine will be compromised.
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