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Prior to 1986, lead was a common component of building plumbing. In 1986, Congress amended the Safe Drinking Water Act (originally adopted in 1974) to prohibit the use of pipes, solder or flux that are not “lead free” in drinking water distribution systems. Lead free is defined as no more than 0.2% lead in flux or solder, and no more than 8% lead in pipes. In 2014, Congress further reduced allowable lead content from 8% to 0.25% in pipes and fittings.
Southlake collects and tests 30 routine samples once every year for lead and copper as required by the TCEQ. Southlake then follows chain of custody protocol to deliver the samples to an approved, accredited testing laboratory.