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2. Lead contamination in Washington, D.C., drinking water

   en.wikipedia.org/wiki/Lead_contamination_in...

   WASA found that homes in its service area with lead service lines averaged five times the EPA limit for lead during a year-long period. [2] The results were unexpected; the EPA scientist overseeing DC's water suggested that drought conditions might have raised the alkalinity levels of the Potomac River, leading to a change in the pH of the ...

3. Lead abatement in the United States - Wikipedia

   en.wikipedia.org/wiki/Lead_abatement_in_the...

   Cutting tools smear lead across the surface; surface finishing may also have an effect. Lead also fill voids in castings; many plumbing fittings are cast, though some are wrought (formed hot without melting). Castings (such as many faucets) are often made from scrap metal, as this is cheaper; however, removing lead from the scrap can be expensive.

4. Lead service line - Wikipedia

   en.wikipedia.org/wiki/Lead_service_line

   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 ...

5. Old House Handyman: Replacing bathroom plumbing leads to full ...

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6. Uniform Plumbing Code - Wikipedia

   en.wikipedia.org/wiki/Uniform_Plumbing_Code

   In 1884 the State Board in its biennial report to the legislature notes that service lines between the mains and the house ("house-communication pipes") were generally made of lead [2] but ..."Hygiene cannot approve of their employment, for they are liable to be acted upon, especially by soft water, and in consequence there may be danger of ...

7. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   Due to its toxicity, most cities moved away from lead water-supply piping by the 1920s in the United States, [36] although lead pipes were approved by national plumbing codes into the 1980s, [37] and lead was used in plumbing solder for drinking water until it was banned in 1986. [36] Drain and vent lines are made of plastic, steel, cast iron ...