NSF/ANSI Standard 61 has been updated to further protect the public from exposure to lead.
Changes to the evaluation criteria for lead extraction testing in the NSF/ANSI Standard 61: Drinking Water System Components--Health Effects have been adopted by the NSF Drinking Water Additives Joint Committee. These changes include a reduction in the total allowable concentration (TAC) of lead, from 15 [micro]g/L to 5 [micro]g/L.
NSF/ANSI Standard 61 contains procedures for evaluating products that come into contact with drinking water and for screening out those that might contribute excessive levels of contaminants to drinking water. Most U.S. States and many Canadian Provinces require products used in municipal water distribution systems and building plumbing systems to comply with the requirements of Standard 61.
In addition to reducing the TAC of lead from 15 [micro]g/L to 5 [micro]g/L, the update makes other changes to the lead evaluation criteria, including
* a more than 50 percent reduction of the Q Statistic, from 11 to 5 for all end-point devices other than supply stops, flexible plumbing connectors, and miscellaneous components;
* a more than 75 percent reduction of the Q Statistic, from 11 to 3, for supply stops, flexible plumbing connectors, and miscellaneous components; and
* a threefold reduction of the single-product allowable concentration (SPAC) for lead, from 1.5 [micro]g/L to 0.5...