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The use of lead has been banned in water systems since 1986, and most water pipes are now made of copper or plastic. Both Pasco and Richland public works departments have sent letters to residents.
It means it's possible. The EPA required people to be notified of known or potential service lines containing lead, galvanized lines requiring replacement or unknown lines. Why are lead pipes a ...
For example, homes built before 1986 — when the federal government banned the use of leaded pipe and solder in new plumbing system construction — may or may not have lead lines in them.
A lead service line (LSL, also known as lead service pipe, [1] and lead connection pipe [2]) is a pipe made of lead which is used in potable water distribution to connect a water main to a user's premises. Lead exposure is a public health hazard as it causes developmental effects in fetuses, infants, and young children. It also has other health ...
Even where lead piping, or lead-sheathed cable, still needs to be jointed, this is carried out with a wiped joint, rather than a burned joint. Wiping a lead joint is a soldering process, using plumber's solder (80% lead / 20% tin) and is carried out at low temperature, with a natural-draught propane blowtorch. Today, even wiped joints are rare ...
Type Y is a thicker walled pipe, used for underground works and heavy duty requirements, including hot and cold water supply, gas reticulation, sanitary plumbing, heating and general engineering. Type Z is a thinner walled pipe, also used for above-ground service, including drinking water supply, hot and cold water systems, sanitation, central ...
This was the first change since 1991, so over the past few years, Greensboro has been doing its own investigation into water pipes and has not found any signs of lead.
Lead pipes are more likely to be found in older cities and homes built before the mid-1980s. The EPA estimates there are 9 million lead service lines in the country.