Lead & Copper

Lead and copper pose potentially harmful health effect for humans if consumed in elevated quantities. The EPA Lead and Copper regulation (LCR) requires municipal water systems to test finished water at consumer’s taps for elevated lead and copper content. The regulation establishes a sampling/testing protocol and requires that ninety percent of all first draw samples be below the required action limits:

Lead         < .015 mg/l at the 90th percentile
Copper    <   1.3 mg/l at the 90th percentile

The exceedance of one or both action limits at the 90th percentile requires a desktop or in system evaluation to identify and select appropriate treatment technologies to mitigate the release of lead and copper. Carus Corporation has developed a complete line of poly-ortho phosphate, zinc orthophosphate and orthophosphate blends to effectively reduce corrosion in potable and non-potable systems.  The phosphate-based corrosion inhibitors are designed to create a microscopic film formation on unlined cast iron pipes, lead service lines and copper plumbing with lead solder.

Carus Sales and technical advisors work with you to evaluate water quality and recommend effective treatment solutions for all types of water treatment facilities including groundwater, surface water, conventional filtration and membrane technology. Carus corrosion programs are supported by our full time technical service and laboratory teams. The support includes site visits and water quality testing to insure effective treatment recommendations. Ongoing treatment is supported by corrosion coupon test programs and water quality analysis to insure long-term compliance with the EPA Lead and Copper regulations.      

Carus products which support the lead and copper treatment objective include: