Arsenic levels left in MSMA?EUR??,,????'???s wake ?EUR??,,????'??raise a concern for cancer risk,?EUR??,,????'?? U.S. Environmental Protection Agency officials said in an August statement. The agency will revoke federal approval of the herbicide?EUR??,,????'???s use, pending a comment period that ends Nov. 9.

MSMA has been linked to high arsenic levels beneath at least a dozen golf courses in Collier County and at Veterans Community Park on Immokalee Road.

Southwest Florida?EUR??,,????'???s high water table and sandy soils make the area?EUR??,,????'???s drinking water supply particularly vulnerable to contamination, experts say.

Computer models showed that repeated application of MSMA would allow arsenic concentrations of 45 parts per million to build up in soil,wrote Doug Jones, chief of the Florida Department of Environmental Protection?EUR??,,????'???s bureau of waste cleanup.

In Florida, officials require arsenic spills in residential areas to be cleaned up to 2.1 parts per million.

At that point, the cancer risk is estimated at no more than a one-in-a-million chance.

By any measure, arsenic is bad for your health. Studies show exposure increases the risk for heart disease, diabetes as well as liver, lung and other types of cancer. A naturally occurring element, arsenic can make you sick if you breathe it in, swallow it or touch it.

MSMA has been a popular choice among cotton growers and turf managers since it appeared on shelves in the 1960s. Each year, farmers and turf managers spray 3 million pounds of MSMA or the similar DSMA nationwide, the EPA estimates.