Key findings of the report include:
 

• If the Filthy Five eliminated mercury use, nearly 4,400 pounds of reported mercury emissions would be eliminated each year. (It takes just 1/70th of a teaspoon to contaminate a 25 acre lake.) This does not include mercury that is “lost” and not monitored at the plants, an amount that has rivaled power plant emissions in some years.
• Although the cost of converting to mercury-free technology runs in the millions of dollars, the report shows the majority of costs could be recovered within five years due to energy savings, increased capacity and eliminating millions of dollars in fines, upgrades and cleanups.
• Plants that have shifted save millions of dollars due to increases in energy efficiency ranging between 25 and 37 percent. Since electricity can make up half of total production costs, these savings can vastly improve profitability.
• Conversion of the Filthy Five to mercury-free technology collectively would save the companies nearly $100 million dollars over five years in energy costs.
• Many plants also have increased production capacity by 20 to 80 percent in the process of converting, increasing their sales and profit.
• If just four of the Filthy Five increased capacity by 25 percent, their collective sales would increase by more than $300 million, and they would save another $14.6 million due to increased energy efficiency.
• Both the ERCO plant in Wisconsin and the Olin plant in Tennessee are the number one mercury air polluters in their states, while Olin in Georgia and Ashta in Ohio are the third largest sources of mercury air pollution in their respective states. PPG in West Virginia is the top mercury releaser to water.

Chlorine is a chemical building-block used in everything from swimming pools to plastic tents to paper towels. Mercury-cell chlorine plants produce chlorine by pumping a saltwater solution through a vat of mercury, or a mercury-cell, which catalyzes an electrolytic chemical reaction. Through this process, mercury pollution is released into the air and waterways and tons of mercury wastes are generated and disposed of.

Most human mercury exposure results from eating contaminated fish. Mercury is primarily a neurotoxin, which means once in the body it attacks the central nervous system. It can cause serious health problems, especially in children, with very high exposure levels leading to brain damage, mental retardation, blindness, seizures and speech problems. An EPA scientist has estimated that one in six women of child-bearing age has enough mercury in her blood to pose serious neurological risks to her developing child. In the United States, the EPA and the Food and Drug Administration have cautioned women of childbearing age and children to avoid certain types of seafood due to the risk of mercury poisoning. Governments around the world also have issued similar warnings. All five states where mercury-cell chlorine plants operate have issued fish consumption advisories because of high mercury levels found in their rivers and lakes.

“Mercury is a dangerous chemical that’s finding its way into our waters, and into the food we eat,” said Oceana’s Simon Mahan, the report’s lead author. “These five plants need to step up to the plate and act responsibly toward their employees and their communities. Eliminating mercury from chlorine production is good for public health, good for the environment and – as Oceana’s report demonstrates – good for the company’s bottom line.”