The document discusses lead levels in drinking water and regulations to limit lead. It notes the following key points: - Lead levels in drinking water have declined significantly since the late 1970s/early 1980s, due to fewer lead pipes and the Safe Drinking Water Act of 1996. - The Reduction of Lead in Drinking Water Act of 2011 lowered the amount of lead allowed in plumbing materials to 0.25%. - NSF International safety standards and an updated Appendix G place further restrictions on the allowable lead content of plumbing products and fittings as of 2014.

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6. 10
201110

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165–233
30–146
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8. 17–221
22.722008

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1793
1878
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798272
19371%,(4115%,(3814%.(
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13. 10%
2%1%1.8%7.5%36.4%.
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90%10%3
10%30%3.02%

14. 200010
545210


15. Safe Drinking WaterAct (1996)
."

0.2%8%
NSF 61.

16. Reduction of Lead in Drinking Water
Act (2011)
0.25%
2014.

17. NSF 61 – Appendix G
NSF61.
0.25%61G
2014NSF 372(

18. DIN 50930-62001
2–3.5%

19. 
5452

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

20. 

GNSF 61.

21. 
-GNSF 61.
-2016.