There's now an asenic removal system on the market for American homeowners. It's estimated by the EPA that 15% of the country's private drinking water wells produce water with too much arsenic. Culligan is now selling a system that will remove that arsenic and they even offer a digital monitoring system to report to the home owner the water's arsenic levels. The arsenic in water problem is global. I've blogged previously about estimates that over 100-million humans are gradually poisoning themselves by drinking arsenic-laced water. Often the source of the arsenic is natural not industrial.