Cyanide can enter water from industrial discharge such as steel, plastics, and fertilizer manufacturing.
In Florida, Cyanide was reported by 40 community water systems serving about 154,985 people. 1 of those readings were above the federal legal limit, together serving 469 people. It was measured by 1,559 systems in all, so it was detected in 3% of the systems that tested for it.
The highest reading relative to the limit was at Lakemont Ridge Home & RV Park in Polk County, at 105% of it.
Where it comes from: Discharge from steel/metal factories; discharge from plastic and fertilizer factories.
Enforceable. A utility must stay at or under this.
Health-based, not enforceable. Often lower than the limit, sometimes zero.
California OEHHA PHG (1997)
Health effects the EPA associates with it: Nerve damage. Thyroid problems.
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.
Showing the 25 highest of 40 systems that reported Cyanide.
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.