TECHNICAL 39
Vesconite
A Hilube pump bearing .
replaced lead - this replacement will benefit the health of countries that introduce such products , but these alloys tend to be adversely affected by chlorine dosing over an extended time . 5 However , should lead-free , chlorine resistant , long-lasting bearing materials replace these materials , they would lower maintenance time and costs while at the same time reducing lead exposure .
Lead in drinking water Different countries have set the allowable quantities of lead in drinking water . However , the lower the levels the better . There are no safe levels of lead , say experts . This statement is notably true for children who can experience behaviour and learning problems , lower IQ , and hyperactivity , slowed growth , hearing problems , anaemia and , in rare cases , seizures , comas or death with even low levels of lead in the blood . 6
References 1 . Chartered Institution of Water and Environmental Management , Policy Position Paper , Lead in Drinking Water , https :// www . ciwem . org / assets / pdf / Policy / Policy % 20Position % 20Statement / Lead-in-drinking-water . pdf
2 . United States Environmental Protection Agency , Use of Lead Free Pipes , Fittings , Fixtures , Solder , and Flux for Drinking Water , Final “ Lead Free ” Rule , https :// www . epa . gov / sdwa / use-leadfree-pipes-fittings-fixtures-solder-and-flux-drinking-water
3 . United States Environmental Protection Agency , Use of Lead Free Pipes , Fittings , Fixtures , Solder , and Flux for Drinking Water , Final “ Lead Free ” Rule , https :// www . epa . gov / sdwa / use-leadfree-pipes-fittings-fixtures-solder-and-flux-drinking-water 4 . « Germany aims to rid drinking water of lead ». Where I come from - Kampaqne ( DW ) The people who make DW unique Where I come from - DW journalists share their personal stories . Deutsche Welle . 12 March 2013 . Retrieved 13 October 2019 .
5 . Dashner , B , 2011 , Zero Lead Zone in Water Quality Products , https :// www . wqpmag . com / zero-lead-zone
6 . United States Environmental Protection Agency , Basic Information about Lead in Drinking Water , https :// www . epa . gov / ground-water-and-drinking-water / basic-information-about-leaddrinking-water PA
Water facts
Nearly 97 % of the world ’ s water is salty or otherwise undrinkable . Another 2 % is locked in ice caps and glaciers . That leaves just 1 % for all of humanity ’ s needs — all its agricultural , residential , manufacturing , community , and personal needs .
February 2023 Volume 28 I Number 12 www . plumbingafrica . co . za