Federal law requires water suppliers to protect their water systems from contamination or pollution by cross-connections. There are also Regulations by The Florida Department of Environmental Protection, the U.S. Environmental Protection Agency and the State Department of Health. Many safeguards are in place and regular monitoring occurs as required by different agencies. Backflow preventers must be tested at least once each year to ensure that they are performing properly in preventing backflow.
Here’s a secret. Some soaps & detergents meant to clean dirty dishes & soiled laundry work great on bathroom fixtures such as toilets & sinks. Ex: liquid dishwashing soap is an effective general cleaner for vitreous chinaware, porcelain enamel & acrylic surfaces & laundry detergent can tidy up bath fixtures in a snap, particularly in areas exposed to hard water.