Chlorine is the most common drinking-water disinfectant. A residual amount is kept in the water by law so germs cannot regrow on the way to your tap.
In Florida, Chlorine was reported by 7 community water systems serving about 224,834 people. Every reported reading was at or below the federal legal limit.
The highest reading relative to the limit was at City of Fort Myers in Lee County, at 50% of it.
Where it comes from: Added for disinfection.
Enforceable. A utility must stay at or under this.
Health-based, not enforceable. Often lower than the limit, sometimes zero.
California has not published a PHG for this substance.
Health effects the EPA associates with it: Eye and nose irritation, or stomach discomfort.
Water at or under the legal limit meets federal safety standards. A reading above a health goal is not the same as being unsafe, and health goals are set purely on health without regard to cost or treatability. Both are shown so the margin is visible either way.
These figures describe water as delivered by each utility, not what your home’s plumbing adds after it arrives. Informational; not a substitute for testing your own tap.