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The concentration of lead content in drinking waterFeatured science projectScience project video

Observation

The results show that many houses which are more that 50 years of age have lead pipes and where they do, a higher dosage of lead is found in the water. Many houses which are less than 10 years old have PVC pipes (although many have copper or galvanized pipes) and where they do, they have very low levels of lead.
 

New house with PVC plumbing ( <10 years) Lead content/ppb Old house with lead plumbing (>50 years) Lead content/ppb
New House 1 7ppb Old house 1 25ppb
New House 2 12ppb Old house 2 32ppb
New House 3 9ppb Old house 3 30ppb
New House 4 10ppb Old house 4 32ppb
New House 5 9ppb Old house 5 28ppb
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Complexity level:
5
Project cost ($):
10
Time required:
1 hour to prepare, 10 days for collection of samples and preparation
Material availability:
Easily found
Safety concerns:

Do not ingest the water samples.