Lead Control - Cause and Effect
Studies by the Environmental Protection Agency (EPA) indicate that high levels of lead can occur either from short-term, heavy exposure or from long-term, lower exposures. The more lead there is in the body, the more severe the health effects.
The EPA estimates that as much as 57% of our exposure to lead comes from drinking water piping and fixtures.
The EPA lowered the standard for lead in drinking water from 50 parts per billion (ppb) to 15 ppb.
Lead Control - How Lead Gets into Drinking Water
Lead solder joints, now outlawed in new construction, are found in the piping and water storage systems of many buildings built before 1987.
Lead can enter a water supply system from fittings, valves, fixtures or pipe conections made of lead using compounds, drinking fountains with lead-lined tanks, or private wells constructed with lead materials.
Lead Control - How DiHydro Gets the Lead Out
DiHydro's water treatment program removes lead from drinking water without the expense and disruption of repiping.
Our cost effective program coats and seals the inner walls of a piping system with a food-grade silicate that stops lead from entering the water supply.
This continuous treatment process safeguards water from bacteria and other contaminants while protecting the piping system from corrosion
The following is a chart that demonstrates the potential for faucets manufactured prior to 1997 to leach lead into the supply water.
Lead Chart

These levels were found to repeat approximately every 2 hours after a flush. Brand name and price are not indicators of the potential lead leaching level.

The EPA produced a lead-free faucet and fixture standard prohibiting fixtures with more than 8% by weight of lead in fixture. The "Lead Free" rule went into effect in August of 1996. New fixtures with 8% lead still leach lead and copper.

EPA maximum contaminant level for lead is 15 parts per billion.

EPA legal limit for lead content in the construction of a faucet manufactured after August 1996 is 8%.

EPA requires public water supply piping systems testing above 15 ppb to treat the pipe by placing a protective film on the pipe, valves and fitting surfaces with a chemical treatment in order to reduce the water's corrosiveness and mineral content.