No way, the true number has got to be higher, much higher.
To check that your public pool is properly chlorinated, the Water Quality and Health Council recommends the use of portable pool and spa testing strips, easily purchased at pool supply stores and discount retailers, in addition to trusting your basic senses.
"A smelly pool is a dirty pool," said National Consumers League President Emeritus and Water Quality and Health Council Vice-Chair Linda Golodner. "Look for water that's clean, clear and blue. Check for tiles that feel smooth and clean. Make sure there are no strong odors. Listen for pool cleaning equipment. Using your senses help you recognize the difference between a healthy pool and one that needs cleaning and treatment."