Nickel in water (Ni+2) is common, and exists in approximately 85% of the water supplies, and is usually around 1 ppb (part per billion). The US EPA has classified nickel as a possible human carcinogen based on inhalation exposure. Nickel has not been shown to be carcinogenic via oral exposure (nickel in drinking water). No MCLG (maximum contamination level goal) has been proposed for nickel in water.
Nickel Water Treatment - Nickel behaves the same as iron in water. An effective nickel water treatment option is to use a strong acid cation exchanger. Activated carbon filtration can be used to reduce the amount of nickel in drinking water, but may not remove it all. Reverse osmosis systems will filter out 97 - 98 % of the nickel from drinking water.
Water Factory Systems SQC3 Reverse Osmosis System 04-045 Features: The Sanitary Quick Change SQC3 Reverse Osmosis Water Treatment System delivers the highest quality drinking water available, from the best designed system in the industry....