The meaning of LEAD is to guide on a way especially by going in advance. How to use lead in a sentence. When to Use Lead or Led Synonym Discussion of Lead.
Lead can enter drinking water when service pipes that contain lead corrode, especially where the water has high acidity or low mineral content that corrodes pipes and fixtures. The most common problem is with brass or chrome-plated brass faucets and fixtures with lead solder, from which ...
and lead pipes) results in the entry of lead into drinking water. Homes constructed before 1980 most probably have copper pipes connected by a lead solder. In order to prevent lead from discharging into drinking water, many pipes used for the supply of potable water have been replaced...
NI Water has a 25 year programme to identify and replace lead pipes within its infrastructure. As part of this programme customers are informed when lead communication pipes have been replaced and are encouraged to replace their lead supply pipe work.
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One reason may be aging infrastructure and the cost to replace old water pipes and lead solder used in household plumbing. Drinking water is delivered via 1 million miles of pipes across the U.S., much of them laid in the early- to mid-20th century with a lifespan of 75 to 100 years...
Internal corrosion of lead-containing pipe, fittings, andsolder in water distribution systems is currently the most significant source of lead todrinking water. While new construction does not use lead pipe, many older buildingsretain the original lead service lines and internal plumbing. Lead ...
Lead-based paint and the resulting dust and soil contamination is a main source. Other sources of exposure include the use of lead solder in canned food containers and in leaded water pipes providing domestic drinking water. However, uncommon sources of exposure still exist, including unglazed low...
Tin, lead and their alloys, due to their low melting temperatures and wide availability, are the most commonly used solder materials. In fact, lead has been used as a soldering metal for water pipes (also made of lead) even in Roman times, hence the scientific name for lead, Plumbum. ...
[Middle English leden, from Old English lǣdan; see leit- in Indo-European roots.] lead 2 (lĕd) n. 1. Symbol Pb A soft, malleable, ductile, bluish-white, dense metallic element, extracted chiefly from galena and used in containers and pipes for corrosives, solder and type metal, ...