lead solder water pipes
There are several potential sources of lead in your home plumbing that can get into your drinking water: The service line connecting the water main to your house could be made out of lead; the solder in your plumbing could have lead in it; and older brass faucets and valves can contain lead.
The City monitors a selection of homes that have lead service lines (homes built before 1961 may have lead service lines), or internal fixtures and plumbing that contain lead, or that have internal plumbing joined by lead solder (plumbing installed before 1987 may contain lead solder).
Use of Lead Free Pipes, Fittings, Fixtures, Solder and Flux for Drinking Water. The SDWA includes several exemptions from the lead free requirements, specifically for plumbing devices that are used exclusively for nonpotable services, as well as a list of specific products: toilets, bidets, urinals, fill valves, flushometer valves, fire hydrants,
Pmi’S Safe, Responsible Approach
In 1986, the U.S. Environmental Protection Agency (EPA) banned the use of lead pipes and lead solder in plumbing systems because lead is an insidious and dangerous poison.
Since the 1980s, use of lead solder for jointing copper pipes has been prohibited for plumbing systems supplying wholesome water for drinking, cooking or bathing. Under the Water Fittings Regulations, solder containing lead can be used only on non-drinking water installations where the water is not required to be wholesome, such as closed
Even so, lead still can be found in some metal water taps, interior water pipes, or pipes connecting a house to the main water pipe in the street. Lead found in tap water usually comes from the corrosion of older fixtures or from the solder that connects pipes. When water sits in leaded pipes for several hours, lead can leach into the water supply.
The major impact of the Act has been on solder containing 50% tin and 50% lead (50-50), until then the most widely used solder for drinking water systems. Lead-base solders have been replaced by tin-antimony and tin-silver solders.
The Safe Drinking Water Act (SDWA) has reduced the maximum allowable lead content — that is, content that is considered “lead-free” — to be a weighted average of 0.25 percent calculated across the wetted surfaces of pipes, pipe fittings, plumbing fittings, and fixtures and 0.2 percent for solder and flux.
Types of Solder. Buy lead-free solder that’s designed for copper water pipes; you’ll find it in the plumbing section of the store. Solder with lead is still available, but the lead can leach into your water supply, so …