The CDC says COVID-19 cannot survive in properly treated pool water

Coronavirus & Pools

COVID-19 & Pools

According to the CDC there is no evidence that COVID-19 can be spread to humans through the use of pools and hot tubs. Proper operation, maintenance, and disinfection (e.g., with chlorine and bromine) of pools and hot tubs should remove or inactivate the virus that causes COVID-19.

For the latest and most up to date information on the Coronavirus please visit the CDC website.


Unsure about your levels?

Bring in a water sample to your local Pool Professional Retailer for testing.

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Water Chemistry Guidelines

These commonly accepted chemical parameters do not supersede local or state codes and regulations

Parameter Min Ideal Max Pool Type
Free Chlorine (ppm or mg/L) 1.0 2.0 - 4.0 5.0 Pools, Waterparks
Free Chlorine (ppm or mg/L) 2.0 3.0 - 5.0 10.0 Spas
Combined Chlorine (ppm or mg/L) 0 0 0.4 Pools, Waterparks
Combined Chlorine (ppm or mg/L) 0 0 0.5 Spas
Total Bromine (ppm or mg/L) 2.0 4.0 - 6.0 10.0 All Types
PHMB (ppm or mg/L) 30 30 - 50 50 All Types
ph 7.2 7.4 - 7.6 7.8 All Types
Total Alkalinity as CaCO3 (ppm or mg/L) 60 80 - 100*
100 - 120**
180 All Types
Total Dissolved Solids (ppm or mg/L) NA NA 1500 over start-up All Types
Calcium Hardness as CaCO3 (ppm or mg/L) 150 200 - 400 1,000 Pools, Waterparks
Calcium Hardness as CaCO3 (ppm or mg/L) 100 150 - 250 800 Spas
Heavy Metals (ppm or mg/L) None None None All Types
Visible Algae None None None All Types
Bacteria None None Local Code All Types
Cyanuric Acid (ppm or mg/L) **** 30 - 50 **** All Types
Temperature °F/°C 78°F
Competition Pools
Temperature °F/°C - - 104°F Spas
Temperature °F/°C - Personal Preference 104°F Other Pools
Ozone (ppm or mg/L) - - 0.1 over 8-hr. time wtd. avg. All Types
ORP Calibrate to Disinfectant Level **** Calibrate to Disinfectant Level **** Calibrate to Disinfectant Level **** All Types
* For calcium hyphchlorite, lithium hypochlorite, or sodium hypochlorite
** For sodium dichlor, trichlor, chlorine, gas, BCDMH
*** Start-up includes the TDS contribution of salt found in chlorine generating systems
**** Dictated by local codes. Typically 100 ppm(mg/L). (Some codes are higher, some are lower)
***** Some local codes may dictate a minimum and maximum

© National Swimming Pool Foundation 2017