143.13 Use prohibitions.§ 143.13 Use prohibitions.
(a) No person may use any pipe, any pipe or plumbing fitting or fixture, any solder or any flux that is not lead free as defined in § 143.12 in the installation or repair of:
(1) Any public water system; or
(2) Any plumbing in a residential or nonresidential facility providing water for human consumption.
(b) Paragraph (a) of this section shall not apply to leaded joints necessary for the repair of cast iron pipes.