California and Vermont have passed regulations AB 1953 (2006) and Vermont Act 193 limiting the amount of lead that may be in plumbing products. California Regulations require third party ANSI accredited organizations provide product certification, SB 1334 (2008). These laws have been incorporated in the California Health and Safety Code Section 116875-116880.
California has also published regulations that require most materials and devices used in water distribution systems be certified as meeting the health effects requirements of NSF/ANSI 61 by an ANSI accredited certification body. These regulations have been posted on the California Department of Public Health website as "California Regulations Related to Drinking Water", Aug 13, 2009. Title 22 Code of Regulations §64591 individual additives (page 197).
In January, 2010, Public Law 111-380 "Reduction of Lead in Drinking Water Act" was signed. This law applied on a national scale the same low lead requirement as California (<0.25%) Truesdail's certification to NSF/ANSI 372 "Drinking Water System Components, Lead Content" will assure compliance with both State and Federal requirements.