Physical Education

Unit - 7

7.1.2.Sources of contamination
Some of the various sources of bacteria and microbes in your pool can include:

• People swimming in the pool - this is the main source of bacteria.
• Animals, such as dogs - some pets like to paddle in the pool on hot days.
• Dead wildlife - for example, frogs or lizards or insects may occasionally drown in your pool.
• Debris from around the property, such as leaves, grass and dust.