Water Chemistry Guidelines

Parameter Minimum Ideal Maximum Pool Type
Free Chlorine (ppm) 1.0 2.0 - 4.0 5.0 Pools, Water parks
2.0 3.0 - 5.0 10.0 Spas
Combined Chlorine (ppm) 0.0 0.0 0.2 Pools, Water parks
0.0 0.0 0.5 Spas
Total Bromine (ppm) 2.0 4.0 - 6.0 10.0 All Types
PHMB (ppm) 30 30 - 50 50 All Types
pH 7.2 7.4 - 7.6 7.8 All Types
Total Alkalinity (ppm) 60 80 - 100*
100 - 120**
180 All Types
Total Dissolved Solids (ppm) NA NA 1,500 over start-up All Types
Calcium Hardness as
CaCO3 (ppm)
150 200 - 400 1000.0 Pools, Water parks
100 150 - 250 800.0 Spas
Heavy Metals None None None All Types
Visible Algae None None None All Types
Bacteria None None Local Code All Types
Cyanuric Acid (ppm) 0.0 30 - 50 Local Code All Types
Ozone (ppm) - - 0.1 Over 8 hr time wtd. Avg. All Types
Temperature °F 78 °F 80.5 °F 82 °F Competition Pools
Personal Preference Personal Preference 104 °F Spas
Personal Preference Personal Preference 104 °F Other Pools

About AES

Aquatic Environmental Systems was founded in 1983 to be a resource for swimming pool and water treatment professionals in the Southwest.  From a desk and a telephone in a walk-in closet, we have grown into over 6,000 square feet of space, eleven employees and five service vehicles in Arizona and New Mexico.  This has enabled us to better serve a diverse group of professionals in the water treatment and recreational water community in Arizona, New Mexico, El Paso and West Texas.

Employing the latest in proven technology, we are able to offer solutions for virtually all of the aquatic recreation and water treatment needs of our partners.

With the over 90 years of combined experience of our staff, you can be confident that we will provide solutions that are in your best interests.